Bài giảng Nhiệt động lực học kỹ thuật: Chương 7 - TS. Huỳnh Phước Hiển

Chapter 7.5: Thermodynamics Applied to Air Conditioning (KKA) discusses various heat transfer processes, temperature and humidity control, evaporative cooling, and drying processes in KKA. It also covers principles such as energy balance, entropy, and the Carnot cycle.

Academic researchers, engineers, and professionals working in the field of HVAC, refrigeration, and energy.

The chapter begins with an introduction to heating (gia nhiệt) and cooling (làm lạnh) of air conditioning systems (KKA). It explains that the heat absorbed by KKA in the heating process is Q = Ga.(I2 - I1), while in the cooling process, it's Q = Ga.(I3 - I1). The chapter then delves into evaporative cooling, a method for reducing air temperature. The heat absorbed during evaporation is Q = Ga.(I3 - I2). The third section discusses the mixture of air and water, using a blending chamber as an example, with the heat absorbed being Q = Ga.(I2 - I1). The fourth section covers drying processes, dividing it into hot air drying (sấy nóng) and low temperature drying. For hot air drying, the chapter discusses the calorifer, a device used for this purpose, with the heat absorbed being Q = Ga.(I2 - I1). Low temperature drying involves the use of refrigerators, with the refrigerator's heat of condensation being Q0 = Ga.(I3 - I1), and the heat absorbed during the drying process being Q1 → 2 = Ga.(I2 - I1).