Fabrication and Testing on Rice Husks and Rice Starch Mixture as an Alternative Insulation Material

Summary

The study explores the potential of rice husk and rice starch mixture as an eco-friendly and cost-effective alternative to conventional insulation materials for window-type air conditioning units. Through various tests, including ASTM standards and ANSYS simulation, the researchers found that a specific mixture (25% rice husk ash and 75% starch) demonstrated superior insulating properties with the lowest thermal conductivity. The study concludes that this sustainable material could be a viable option for thermal insulation, offering both environmental and economic benefits.

Takeaways

• 🌱 The study focuses on developing a sustainable and cost-effective insulation material using rice husk and rice starch for window type air conditioning units.
• 🌡️ Thermal insulation in air conditioning systems is crucial for reducing heat gain or loss, and the study aims to find an alternative to conventional materials like polyester, foam, and polyethylene foam.
• 🔍 The researchers are investigating the benefits of using rice husk as an insulating material due to its low thermal conductivity, which prevents heat from passing through easily.
• 🧪 The study will determine the properties of the rice husk and starch mixture, its advantages over commercial insulation materials, and the cost-effectiveness of the proposed material.
• 📊 The research has specific objectives, including fabricating and testing the new composite insulating material and determining its thermal properties using ASTM standards and ANSYS software.
• 🌐 The study's significance lies in maximizing the use of agricultural waste, such as rice husks, and analyzing its potential as an alternative insulation material for air conditioning units.
• 📚 The literature review highlights common problems with air conditioning insulation, such as wear and tear, and the importance of thermal conductivity and resistance in insulation materials.
• 🔧 The methodology involves treating raw rice husk, creating a mixture with rice starch and a foaming agent, and testing the resulting insulation boards for thermal properties.
• 📊 Experimental results showed that a specific mixture (Board D with 25% rice husk ash and 5% starch) had the lowest thermal conductivity, indicating better insulating properties.
• 💹 Cost analysis revealed that the proposed rice husk insulation boards are more economical compared to commercial polyethylene foam, making them a viable alternative.
• 🔬 ANSYS simulations were used to model the thermal conductivity of the rice husk-based insulation, validating the experimental results and providing additional insights into heat transfer.

Q & A

What is the main objective of the study presented in the transcript?

The main objective of the study is to fabricate and test a mixture of rice husk and rice starch as an alternative insulation material for window type air conditioning units.

Why is there a need to develop alternative insulation materials for air conditioning units?

There is a need to develop alternative insulation materials to address the crisis in sustainable growth and environmental stability, by creating cost-effective, durable, and lower embodied energy construction materials.

What are the common insulation materials used for air conditioning units?

Common insulation materials used for air conditioning units include polyester foam, polyethylene foam, and rockwool.

What are the benefits of using rice husk as an insulation material?

Rice husk has low thermal conductivity, which means it does not let heat pass through easily, making it an effective insulator.

What are the specific questions the study aims to answer?

The study aims to answer questions such as the properties of the rice husk and starch mixture, the optimal ratio for the mixture, the advantages over commercial insulation materials, the cost of the proposed rice husk insulation, and the processes involved in achieving good insulation.

What are the general and specific objectives of the study?

The general objective is to have an alternative insulation material, while the specific objectives include fabricating and testing the new composite insulating material, determining the capabilities of each thermal property using ASTM standard experimental setup and ANSYS software, and analyzing the effectiveness of rice husk ash as an insulator.

How does the study define thermal conductivity and thermal resistance?

Thermal conductivity is defined as the ability of a material to conduct heat, while thermal resistance is the ability of a material to resist heat flow.

What are the methods used to determine the thermal properties in the study?

The methods used to determine the thermal properties include ASTM E1461-13 for thermal diffusivity using the flash method, and ASTM C177-04 for thermal transmission properties using guarded hot plate apparatus.

What is the significance of the study in terms of resource utilization?

The study aims to maximize the usage of rice husks, which are agricultural waste materials, by turning them into a valuable insulation material for air conditioning units.

What are the scope and limitations of the study?

The study focuses on the analysis of the mixture of rice husk and rice starch as an insulation material for window type air conditioning units, and it does not extend to other types of air conditioning systems or insulation materials.

What are the conclusions drawn from the study regarding the effectiveness of the rice husk and starch mixture as an insulation material?

The study concludes that the rice husk and starch mixture, specifically sample board D with 25% rice husk ash and 5% starch, has the lowest thermal conductivity and highest thermal resistivity, making it an effective and economical alternative to commercial insulation materials.

Outlines

00:00

🌱 Introduction to Rice Husk Insulation Research

Denzel Rapanan introduces a study on the fabrication and testing of a rice husk and rice starch mixture as an alternative insulation material for window-type air conditioning units. The study aims to address the global crisis of sustainable growth and environmental stability by developing cost-effective, durable construction materials with lower embodied energy. The researchers are particularly interested in the benefits of rice husk as an insulation material and will investigate its thermal properties, compatibility, and cost-effectiveness compared to commercial insulation materials like polyethylene foam. The study will use ASTM standard experimental setups and ANSYS software for testing.

05:01

🔍 Review of Insulation Materials and Theoretical Considerations

The script reviews common insulation materials like polyester, foam, and polyethylene foam, and discusses the importance of thermal insulation in air conditioning systems. It highlights the need for further innovation in insulation materials. Rice husk ash is presented as a potential insulator due to its low thermal conductivity. The script also covers the physical properties and chemical composition of rice husk ash, and the ASTM terminology guide for standard thermal insulation. Theoretical considerations include the modes of heat transfer (conduction, convection, and radiation) and the theories that will be used to guide the study, such as the Fourier's law of heat conduction.

10:03

🔨 Methodology for Insulation Material Production and Testing

The methodology chapter details the process of producing and testing the rice husk and rice starch insulation material. It includes the treatment of raw rice husk, thermal treatment to produce rice husk ash, and the use of rice starch as a binding agent. The mixture is then combined with a foaming agent to create the insulation board. The testing involves the use of ASTM C177 for steady-state heat flux measurement and thermal transmission properties using a guarded hot plate apparatus. Due to pandemic limitations, the researchers adapted the testing method based on a study by Tech Science. The chapter also discusses the use of ANSYS software for simulating the thermal properties of the insulation material.

15:04

📊 Results and Analysis of Insulation Material Testing

Ashley Puyat reports on the results and analysis of the experimental insulation boards. The group fabricated four boards with varying mixture percentages of rice husk ash and starch. The boards were tested for thermal conductivity, thermal resistivity, and thermal diffusivity using experimental setups and ANSYS simulation. The results showed that Board D, with a composition of 25% rice husk ash and 5% starch, had the lowest thermal conductivity, making it the most effective insulator. The cost analysis revealed that the experimental boards were more economical compared to commercial polyethylene foam. ANSYS simulations confirmed the experimental results, showing good agreement between computed and simulated data.

20:06

🏁 Conclusions and Recommendations for Future Research

The researchers conclude that they have successfully fabricated a thermal insulation board using rice husk ash and rice starch. Sample board 4 demonstrated the best insulation characteristics with a thermal conductivity of 0.0396 watts per meter kelvin. The material is not only cost-effective and renewable but also does not emit toxic substances. Recommendations for future research include educating researchers on advanced heat transfer principles and operating various laboratory equipment. It also suggests conducting tests using recommended equipment for determining thermal productivity and exploring the use of more biomass resources and different binding agents for improved fire retardancy.

Keywords

💡Sustainable Growth

Sustainable growth refers to the ability to develop and maintain economic, social, and environmental well-being over time without depleting resources or causing irreversible damage to the environment. In the context of the video, sustainable growth is a driving force behind the research, as the world faces crises that necessitate the development of cost-effective and durable construction materials with lower embodied energy. This is particularly relevant to the air conditioning industry, where the study aims to find an alternative insulation material that is both environmentally friendly and economically viable.

💡Thermal Insulation

Thermal insulation is a material or process used to reduce the flow of heat between objects in thermal contact or in a range of wavelengths. In the video, thermal insulation is crucial for the efficiency of air conditioning systems, as it helps to minimize heat gain or loss from the system's components. The study focuses on developing a thermal insulation material from rice husk and rice starch, which could potentially replace conventional materials like polyester foam and polyethylene foam.

💡Embodied Energy

Embodied energy is the total energy required to produce, transport, and install a material or a product. It is a key consideration in sustainable construction as it reflects the environmental impact of a material throughout its life cycle. The video discusses the need for construction materials with lower embodied energy, highlighting the researchers' goal to create an insulation material that is not only effective but also environmentally friendly in its production process.

💡Rice Husk

Rice husk is the hard outer shell of a rice grain, which is a by-product of rice milling. It is typically considered agricultural waste, but in this video, it is repurposed as a potential insulation material. The researchers are exploring the benefits of using rice husk ash, which is derived from the combustion of rice husks, as a sustainable and cost-effective alternative to traditional insulation materials in air conditioning units.

💡Rice Starch

Rice starch is a carbohydrate extracted from rice and is used as a binding agent in various industrial applications. In the context of the video, rice starch serves as a binder in the mixture with rice husk ash to create the insulation boards. The combination of rice husk ash and rice starch is tested for its thermal properties to determine its effectiveness as an insulation material.

💡Thermal Conductivity

Thermal conductivity is a property of a material that indicates its ability to conduct heat. A material with high thermal conductivity allows heat to flow through it easily, while a material with low thermal conductivity resists heat flow, making it a good insulator. The video discusses the importance of thermal conductivity in evaluating the effectiveness of the rice husk and rice starch mixture as an insulation material. The lower the thermal conductivity, the better the insulating properties of the material.

💡ASTM Standards

The American Society for Testing and Materials (ASTM) sets standards for various materials, including thermal insulation. In the video, the researchers use ASTM standards to test the thermal properties of the rice husk and rice starch mixture. ASTM C177 and ASTM E1461-13 are mentioned as the standards used for measuring thermal transmission properties and thermal diffusivity, respectively. Adhering to these standards ensures that the testing is conducted in a manner that is consistent with industry practices.

💡Polyethylene Foam

Polyethylene foam is a closed-cell foam material known for its excellent thermal insulation properties. It is commonly used in air conditioning units as an insulation material. The video compares the thermal properties of the rice husk and rice starch mixture to those of polyethylene foam, aiming to demonstrate that the natural mixture could be a viable and more sustainable alternative to synthetic materials like polyethylene foam.

💡Thermal Resistivity

Thermal resistivity is a measure of a material's ability to resist heat flow. It is inversely related to thermal conductivity. In the video, the researchers compute the thermal resistivity of the insulation boards made from the rice husk and rice starch mixture to evaluate their insulating effectiveness. A higher thermal resistivity indicates better insulating properties, which is desirable for materials used in air conditioning units.

💡Thermal Diffusivity

Thermal diffusivity is a measure of how quickly heat is dispersed within a material. It is an important property for insulation materials as it affects how well the material can distribute heat over time. The video mentions the use of the flash method to determine the thermal diffusivity of the rice husk and rice starch insulation boards. A lower thermal diffusivity indicates that the material is better at retaining heat and providing insulation.

Highlights

The study focuses on developing sustainable and cost-effective construction materials with lower embodied energy for air conditioning systems.

Thermal insulation in air conditioning systems is crucial for reducing heat gain or loss and preventing water vapor and freezing on cold surfaces.

Common insulation materials like polyester, foam, and polyethylene foam are being re-evaluated for environmental impact.

Rice husk is explored as a potential insulation material due to its low thermal conductivity and natural availability.

The study aims to determine the properties of rice husk and starch mixtures for use in window type air conditioning units.

The research questions address the ratio mixture, advantages over commercial materials, cost, and processes involved in achieving good insulation.

The study's goal is to establish if rice husk and starch mixture can match the thermal properties of polyethylene foam.

General and specific objectives include fabricating a new composite insulating material and determining its thermal properties using ASTM standards.

The significance of the study lies in maximizing the use of rice husks as a waste material and analyzing its potential as an alternative insulation.

The study's scope is limited to the analysis of rice husk and rice starch mixtures for air conditioning insulation.

Literature review includes common problems with air conditioning insulation and the importance of maintaining efficiency.

Rice husk's insulating properties, such as low thermal conductivity, make it an effective alternative to traditional insulators.

The study utilizes theories of heat transfer, including conduction, convection, and radiation, to understand insulation effectiveness.

The methodology involves treating raw rice husk, thermal treatment, and combining it with rice starch and a foaming agent to create an insulation board.

Experimental setups based on ASTM C177 and E1461-13 standards are used to test the thermal resistance and conductivity of the boards.

Cost analysis shows that the proposed rice husk insulation boards are more economical compared to commercial polyethylene foam.

ANSI software is used for thermal analysis to reduce energy consumption and improve the understanding of heat transfer in the composite materials.

The study successfully fabricated thermal insulation boards with varying ratios of rice husk ash and starch, showing potential for sustainable insulation.

Recommendations for future research include exploring more biomass resources and improving the study with advanced heat transfer knowledge and equipment.

Transcripts

um good day i am denzel rapanan and we

are the group to present our

uh this is titled fabrication and

testing on rice husk and rice starch

mixture as an alternative insulation

material or window type air conditioning

unit

i'm here to discuss

our overview and background of the study

so with the world facing a crisis in

terms of sustainable growth and

environmental stability the

responsibility is on the engineer

community to develop cost effective and

durable construction material having

lower embodied energy

in the air conditioning system

thermal insulation is mainly to reduce

the heat gain or heat loss from piping

other considerations include stopping of

water paper and freezing

and condensing on cold surfaces with

further innovation

there are many materials used for

insulation example for this is polyester

foam and polyethylene foam which is

classified as the insulation material

used for a conditioning unit hence there

are other materials to consider for

making thermal insulation and for us

researchers

we are here to study about

the benefits of rice husk

as insulation material

for air conditioning unit

so for this study

the use of rice has as insulation

material will be focused on the air

conditioning insulation

this study would also like to know the

compatibility of the mixture and whether

it would affect its properties to

insulate the window type air

conditioning unit

specifically this study will seek to

answer the following question

what are the properties

what are the ratio mixture and what are

this advantage and advantage

to

the commercialized insulation material

and

what are the

cost of the proposed prices starch

insulation and lastly what are the

processes involved in to achieve good

insulation

this paper aims to determine if this

mixture of rice has and starch will be

have comparable thermal properties

compared to polyethylene foam

for it

to be able to become an alternative

material to the commercialized

polyethylene foam as an insulation

the study has general and specific

objectives and it stated that the

researchers aim to have an alternative

insulation

and to fabricate

and test the new composite insulating

material also the researchers will

determine the capabilities of each

thermal properties using astm standard

experimental setup and ansys software

for testing

so for the significance of the study the

researchers want to maximize the usage

of rice has passed

the study aims to analyze if the rest

has can serve as an alternative

insulation for the conditioning and the

primary british studies of this

study are the farmers

and for the scope and limitation this

study will only focus

on the analysis of mixture of rice haas

and rice starch

as in as an insulation material for

window type air conditioning

specifically these are the following as

at it as it is stated

next is

our

rrl or review of related literature

so one of the important uh things in

buying air conditioning units

especially in residential is to have a

maintenance checkup to ensure the safety

one

no

there are many common problems that has

been faced by many people when it comes

to air conditioning from time to time

there are times that insulation has been

worn out and this could have a lesser

efficiency when it comes to work

so the researchers

collect data

to know more about the insulation

material used for air conditioning unit

and which is

is a polyethylene foam

insulation is one of the most important

aspects in critical functioning of any

air conditioning system when it comes to

its work insulation is utilized to

reduce energy loss and increase

efficiency

close cell polyethylene foam fiberglass

polyethylene and rockwool are the five

forms of insulation used in air

conditioning

this table stated that

the price for each pulley

for each insulation used in air

conditioning

next is rice's ass has several good

qualities of insulating properties which

make in an effective alternative

insulator these properties involve very

low thermal conductivity which means

that it does not let heat pass through

it easily

so according to this table and figure

stated

the different

uh physical properties of rice has

chemical composition and

the unburned and burned in rice

in continuation of the review of related

literature the table 3-1 astm

terminology guide for standard thermal

insulation is presented

thermal conductivity help to justify

what a certain material feels cooler to

the touch than other material on the

other hand

thermal resistance is the ability of the

material to resist hit flow

according to the table 3-1 represented

that test the thermal conductivity is

c117-04

which is the steady state heat flux

measurement and the thermal transmission

properties by means of guard hot plate

apparatus

and also the astm e1461-3

which is the termination of a thermal

diffusivity by means of flash method

for the theoretical considerations these

theories that have been considered with

help us in line to achieve our

objectives and answer the statement of

the problem

that will be used for the study

one of the theories considered is the

mode of heat of transfer insulation is

creating a barrier that will lessen or

minimize the heat of

transfer of heat energy from one

substance to another

insulations come in three different heat

transfer modes

this are conduction

convection or radiation

there are cases of insulation

manufactured from rice

ask ash

mixed with starch as binder that will

minimize the heat transfer occurring

from air surrounding

also

there are window type of air

conditioning unit

which the moded heat of transfer will be

conduction of gas to solid

using the theory of conduction stating

that the formula for conduction

is the rate of heat of conduction is

equals to the thermal conductivity of

the material

which is negative

times

to the area

times

to the temperature difference over its

thickness

so these two are the things needed to

provide

and to prove for the study first is the

properties of rice hash ashes combine

starch as insulator

and also the performance test for the

assessment of rice has starch mixture

efficiency

so the rice ash is an instance of

agricultural waste material

and they can mostly be found in rice

body fields in rural parts of the

country

rice hash is composed of 50 cellulose 30

percent linear and twenty percent celica

so there are a lot of various studies

and tests has been applied applied to

those studies

which shows on the effectivity

as an insulator

that has rice hashes on it by using the

method of hot plate method

[Music]

thermal conductivity can be determined

by producing a heat flow through a slab

sheet sample with the thickness with an

area and determining the temperature

differential

furthermore heat flow rate can also be

determined through melted water using

guarded hot plate experimental apparatus

with a formula of

rate of heat flow is equals to specific

heat of fusion of ice which is

334 kilojs per kilogram is multiplied to

the mass of melted water which is in

kilograms and divided by the change of

time which is in seconds

there are two equation which is the heat

flux and

the fourier fundamental equation for the

heat flux heat flux is the quantity of

heat transported to or from a surface

per unit area per unit time

heat transfer rate per unit time and the

region 2 or from which the heat is

transferred will be determined

for the formula of heat flux the heat

flux is equal to the rate of heat flow

over its area

looking on the right side for the

fourier fundamental equation

the thermal conductivity

was calculated

with the use of the fourier fundamental

equation

by using

this formula this can be suitable for

sandwich systems systems

looking at the equation 3.10

the thermal conductivity is equals the

rate of heat flow multiplied

to the distance of the sample

over the change in temperature is

multiplied to the area of the sample

there are two formulas

these formulas can be used in

determining the sum of the insulation

properties needed for the study so first

is the thermal diffusivity

as you can see on the upper part

the thermal diffusivity is equal to the

thickness of the board it is

it is squared

all over the slope is multiplied by four

well the thermal resistivity this can be

calculated

by

the thickness of the board is divided

the thermal conductivity multiplied to

the area of the board

for the thermal diffusivity this is

defined as the rate of which materials

temperature spreads it is the process of

determining the amount of heat

transferred through a material

while the thermal resistivity is a

property of heat and measurement of the

temperature differential

over which an item or substance receives

a heat flow or in other words thermal

resistance refers to a material's

capacity to receive a passage of heat

another consideration is the thermal

insulation standards

based from the table above which is the

astm terminology guide for standard

thermal insulation

there are two methods in determining the

thermal properties

and has been used in the study

the first one is the astm

e1461-13 which determines the thermal

diffusivity by means of flash method

the other one is c177-04

which determines the thermal

transmission properties and using a

steady-state heat flux measurements by

using guarded heart beta parameters

some all of the properties that can be

computed

is the thermal conductivity and the

thermal resistance

these properties are related of concept

of heat transfer

thermal conductivity relates heat

flowing through a sample of the

temperature of the sample on opposite

sides

while thermal resistance is the ability

of material to resist heat flow

considering that using

a thermocouple that has been attached to

opposite sides of the sample both the

thermal conductivity and the thermal

resistance of the sample can be

calculated

chapter 4 methodology

this chapter includes the method and

equipment that were used in gathering

the data for the assessment of the

testing and simulating of insulation

material made from rice house starch

mixture

the diagram on the left shows the

process in production of lighthouse

ashes that i will be discussing in this

chapter the figure on the right shows

the materials for the insulation board

which includes the foaming agent or the

azo dyker bonamite

rice starch rice has ash and the mother

after obtaining the necessary materials

you would then start treating the raw

rice husk to remove unnecessary

substance

acolyte recruitment of the rice has

using a 10 sodium hydroxide or naoh and

90

distilled water for 90 minutes

then fully air dried

the material should be free of adherent

soil and other particles that may affect

the mixture in the later process

thermal treatment process is a process

of heating the material at very high

temperature to produce a highly variable

form the dried rice husk

from the previous step will be heated up

until

it became blackish in concrete the coke

rice has

would be grinded then it would be

separated and put into the into

different container the remains from the

separated would be granted again and

separated until there is enough rice has

ash

for the experiment

the rice starch is a main binding

agent the experimental insulation that

would be using

the group has to mix a cup of rice touch

with water

once thoroughly mixed the mixture will

be heated at a high temperature

a constant steering is important while

boiling the mixture as it will get

denser

the mixture should have a deconsist

consistency to be used for the next

procedure

the rice husk ash rice storch and

foaming agent would be combined to

create a mixture that will be used to

create the insulation board the ratio of

the rice husk ash and the rice surge

would be the dependent variable and can

be shown on table 4-1

mix the rice has

ash and starch thoroughly then add the

foaming agent and place the mixture in

the molder the mixture will be heated at

a high temperature in an oven for 45

minutes

wait for the foaming process to finish

then let the board rest for 60 minutes

remove the board from the molder then

remove the excess the figure shows

the finished product of the rice has ash

insulation boards 1 to 4 from left to

right

usually the experimental material to be

tested for insulation material for the

thermal resistance or astm c177

which is the steady-state heat flux

measurement and thermal transmission

properties by means of the accorded hot

plate apparatus since the study was done

during the pandemic with limited

resource and time

the researchers have decided to conduct

the testing based on the study of tech

science which is the same concept as the

asa standard

the figure above is the actual setup

that we have used to conduct the

experiment it composes of the steam

chamber and the steam boiler

the steam boiler is connected

with the steam chamber and is placed in

the built-in stove the steam chamber is

placed in the inclined wooden stand

on the top of the steam chamber the

materials or the board 1-4 are placed

above the material is a plastic that

displays with the ice block the

thermocouple is placed below the board

and on top of the board

the right side of the steam chamber is

where the condensed water goes to

to start the testing experiment the

water inside the boiler is heated until

it boils and forms steams when the

boiler is started to generate steam the

temperature of the steam chamber is

monitored until it is constant

temperature when constant temperature

for the steam

chamber is achieved the ice block is

placed on top of the board for a few

minutes to stabilize the heat transfer

the weighing scale is placed in front of

the steam chamber where in the molten

ice is collected the trial has a 10

minute duration and the molten ice after

the tile weren't recorded

this is a sample competition for the

heat flow of boardwood using the

specific heat of vision of ice melted

water mass and the change in time

this is a thermal conductivity sample

computation using the heat flow rate

sample board thickness change in

temperature and the area of the sample

board

this is a computation for thermal

resistivity where we use the thickness

of the board thermal conductivity and

area of the board

for the thermal diffusivity we divide

the square of the board thickness to the

four times of the slope

lastly for heat flux we use the heat

flow rate over the area

rise house based insulating material

with air voids was modeled in ansys and

the effective thermal conductivity is

calculated

in this study the researchers tried to

reduce the energy consumed by using ansi

software for analysis

the problem is modeling commercial fem

software

ansys workbench version 12.0 3d analysis

based on steady state thermal analysis

is performed

the start open the ansys workbench

2021 r2 and select steady state thermal

analysis using mechanical apdl solder

select engineering data for defining and

adding the new material to be analyzed

and set isotropic thermal conductivity

for the material

after that close the engineering data

tab and go proceed to geometry to design

the composite sample word using space

clean

next click the step four for steady

state analysis

which is the modeling here the

researchers input the necessary data for

the simulation

generate mesh for the 3d model of the

sample composite board because a correct

mesh density is critical for geometric

parts

where the results are critical you must

increase the mesh density

then input the initial temperature of

the ansi solver must be specified this

information is necessary because of the

materials quality or temperature

dependent

specify the initial condition for the

sample board steady state analysis for

this study the researchers would be

using temperature and apply it to the

one phase of the model

lastly add the solution

for results from steady state thermal

analysis

which are the temperature and heat flux

repeat the steps for boards 2 to 4 and

compare the results in computed data

gathered by the researchers

good day i am ashley puyat reporting the

resource and discussion up to

conclusions and recommendations

the group has made four experimental

installation boards with varying

percentage of mixture which is indicated

below the figure below shows boards one

to four with board one from the left

most the installation boards that were

fabricated were also pliable

porous and compressible in material

this part shows that one resource for

the thermal conductivity experimental

data gathered by the researchers as

shown in the table the results for the

thermal conductivity test is done

experimentally through the bases from

the astme

1461-13 which is also the guided hot

plate method

um overall the thermal conductivity

results showed that the sample board d

which is composed of 25 rha and 5 starch

has the lowest thermal conductivity

of

0.0396 watts per meter kelvin it was

stated that the lower the thermal

conductivity the better because the

material carries less hip energy

this section provides the term the

results obtained in computing for the

thermal resistivity of the insulation

boards thermal resistance is the measure

of the heat flow given the thickness of

the material and was computed by

dividing the thickness of the board by

the thermal conductivity and the area of

the board it was stated that the higher

the terminal resistance of the board the

better the insulating properties so in

this case board force shows the highest

thermal resistivity thus making it the

best insulation among the other boards

this section provides the results

obtained in computing for the thermal

dpc video of the insulation boards

thermal diffusivity is the measure of

the rate at which heat is dispersed

throughout the object the testing that

was done to get the thermal diffusivity

of the world is called the flash method

this method was done to observe the heat

transfer to the insulation board based

on the results that were gathered it is

the board tree that showed the highest

thermal diffusivity among the other

boards this means that the void tree

transfers heat rapidly thus making it

inefficient than the other boards

so the cost analysis for the four

experimental thermal insulation boards

raw material prices were based on a 30

gram average weight multiplying the

price of raw materials the ratio of the

mixture per board and getting some of it

would be the price per board based on

the cost analysis made the experimental

thermal insulation board would be around

1.3 pesos comparing it to the

commercialized polyethylene foam that is

used today in general window type air

conditioning units which is about 1.5 30

grams the rice has insulation board is

more economical

this section shows the thermal analysis

executed through ansi software the

researchers determine the total heat

plus for the composite materials using

steady-state thermal analysis

in nancy's mechanical steady-state

thermal analysis the researchers choose

the materials for the analysis

geometries the access material

correlation includes a large number of

basic materials but for this research

the researchers set a new material to be

analyzed the results showed that sample

board 4 has the best characteristics for

the total heat plus with a result of

352.04 watts per meter squared and it

and it was it was then compared to the

results gathered through the

calculations which

was the same

therefore the calculation was correct

and the figure below shows the results

for the steady state thermal analysis in

ansi simulation

in this slide however the steady state

temperature was shown in the figure to

observe the heat transfer over time

now for the conclusions and

recommendations

so after conducting a series of testing

that the researchers have successfully

fabricated a thermal insulation board

made from rice husk ash and dry starch

as binder it was mentioned before that

there are different ratios of rice husk

ash and binder that were created

the boards was analyzed and tested

through experimental setups based on the

astm c177 which is the guided heart rate

method astm for

e1461-13 which is the flash method and

through ansys simulation

the results show that sample void 4 has

the best characteristics of googled

insulation material with thermal

conductivity of

0.0396 watts per meter kelvin

these voice cond these sports are also

less expensive

renewable insulates well and because it

is by it is a by-product it does not

emit any toxic

further recommendations future

researchers must be educated about the

advanced heat transfer and how to

operate various laboratory equipments

that is in line with the heat transfer

another recommendation is that the

researchers must conduct its testing to

a recommended equipment used for

determining thermal productivity in

order to completely comprehend what is

occurring in the event

to improve the study the students also

recommend investigating the use of more

biomass resources particularly in the

present ratio composition and the

various binding agents or blowing agents

that impart the fire retardancy

this is the gantt chart of our whole

thesis from start to finish

lastly this is a budget for our disease

we spent with the total amount of 2745

pesos

thank you for your time and have a nice

day god bless