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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 / ).
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:
Examples of laws are: the energy conservation law, Newton’s laws of motion, but also quantum mechanics, special and general relativity, etc ... Examples of models
Heat exchangers are typically classified according to flow arrangement and type of construction. The simplest heat exchanger is one for which the hot and cold fluids move in the same or opposite directions in a concentric tube (or double-pipe) construction.
The first law of thermodynamics is a statement of energy conservation as it relates to a thermodynamic system. Heat, which is energy transferred into or out of a system, can be
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.
they will exchange heat until they come to thermal equilibrium (i.e., they have the same temperature). For example if three materials are in thermal contact with
