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Algebraic expressions for the correction factor Fhave been developed for vari- ous shell-and-tube and cross-flow heat exchanger configurations [1–3], and the results may be represented graphically. Selected results are shown in Figures 11S.1 through 11S.4 for common heat exchanger configurations.
Geankoplis 4th ed. 4.5‐4. Water flowing at a rate of 13.85 kg/s is to be heated from 54.5 to 87.8oC in a double‐pipe heat exchanger by 54,430 kg/h of hot gas flowing counterflow and entering at 427oC ( 1.005 / ).
Heat Exchanger. Goals: By the end of today’s lecture, you should be able to: Learn how to deal with heat exchanger problems. Learn how to design and select heat exchanger according to the application. What Are Heat Exchanger? Heat exchangers are units designed to transfer heat from a hot flowing fluid to a cold flowing fluid.
Heat Q is energy transferred between the system and the environment as they interact. The units of Q are Joules. Temperature T is a state variable that quantifies the “hotness” or “coldness” of a system. A temperature difference is required in order for heat to be transferred between the system and the environment.
Chapter 2 Classical Thermodynamics: The Second Law. 2.1 Heat engines and refrigerators. 2.2 The second law of thermodynamics. 2.3 Carnot cycles and Carnot engines. 2.4* The thermodynamic temperature scale. 2.5 Entropy and maximum entropy theorem. 2.6 Some examples involving entropy changes.
A heat exchanger is a component that allows the transfer of heat from one fluid (liquid or gas) to another fluid. Reasons for heat transfer include the following:
Heat • The temperature difference determines the direction of heat transfer. • Bodies don’t “contain” heat; heat always refers to energy in transit from one body to another. • We can change the temperature of a body by adding heat to it.
