BAB 1 BAGIAN 1 TERMODINAMIKA BIOSISTEM

Summary

The transcript covers an introductory lecture on thermodynamics applied to biosystems. The lecturer discusses the textbook 'Thermodynamics and Engineering Approach,' highlighting different editions and why certain ones are preferred. Key concepts like energy, entropy, temperature scales, pressure, and thermodynamic laws (particularly the first and second laws) are explained, with a focus on how they apply to biological systems. The lecturer also emphasizes the importance of thermodynamics in various fields, from the human body to energy systems like wind turbines. The lecture sets the stage for deeper study into dimensions, units, and practical problem-solving in thermodynamics.

Takeaways

• 😀 The lecture introduces Thermodynamics for Biosystems, with a focus on applying engineering thermodynamics principles to biological systems.
• 😀 The primary textbook used is 'Thermodynamics and Engineering Approach' by Yunus A. Cengel and Michael A. Boles, with the 8th edition recommended for the course.
• 😀 The 5th edition of the book is available for free online, and the lecture includes a translated version (by Pak Rahmat) to make it more accessible for Indonesian students.
• 😀 The professor mentions the difference in example applications between different editions of the book, particularly in the biological systems examples.
• 😀 The 8th edition is available online but might require some effort to download due to pop-up ads and other obstacles.
• 😀 The course also highlights the difference between the SI system (international system) and imperial units, with a preference for SI units.
• 😀 The lecture will review key thermodynamic concepts, including mass density, specific weight, temperature scales, and pressure measurements (absolute vs. gauge).
• 😀 The goal is to ensure students understand energy, entropy, and exergy, especially in biological systems and their practical applications in engineering.
• 😀 Thermodynamics is described as the science of energy, entropies, and the transformation of energy, with a focus on how energy is utilized or dissipated in systems.
• 😀 Key thermodynamic laws, including the conservation of energy (First Law) and the quality of energy (Second Law), will be discussed, emphasizing practical applications like heat transfer in biological and mechanical systems.

Q & A

What is the primary subject of the lecture?

The primary subject of the lecture is thermodynamics applied to biosystems.

Which textbook is being used in this course?

The textbook being used is 'Thermodynamics and Engineering Approach' by Yunus A. Cengel and Michael A. Boles, specifically the 8th edition.

Why is the 5th edition of the textbook being shared with students?

The 5th edition is shared with students because it is available for free online, and it has been translated into Indonesian by a retired professor for easier understanding.

What are the differences between the 5th, 7th, and 8th editions of the textbook?

The main differences between the editions are in the examples and the number of practice problems. The 5th edition includes examples relevant to biosystems, which are absent in the 8th edition. The number of practice problems increases with each edition.

What is the lecturer's preferred format for textbooks, and why?

The lecturer prefers using hardcover textbooks for easier note-taking, though they acknowledge that digital formats are more common among Generation Z students.

What is the goal of this course on thermodynamics for biosystems?

The goal of the course is to help students understand thermodynamic terminology, basic concepts, and units, especially in the context of biosystems, and to apply these concepts to practical problems.

What are the core concepts introduced in the lecture?

The core concepts introduced include energy, entropy, exergy, thermodynamic properties, temperature, pressure, density, and the laws of thermodynamics.

How does the lecturer define energy in the context of thermodynamics?

Energy is defined as the ability to cause change, whether physical or non-physical. It is the driving force behind all processes.

What are the first and second laws of thermodynamics as discussed in the lecture?

The First Law of Thermodynamics states that energy cannot be created or destroyed, only converted. The Second Law states that energy has quality, and processes naturally move toward lower-quality energy.

How are thermodynamics applied to biological systems?

Thermodynamics is applied to biological systems in processes like metabolism, food processing, and energy conversion in plants, where solar energy is transformed into usable energy for growth.