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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.
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18.5.3 Efficiency of a Counterflow Heat Exchanger. 18.6...
- 18.4 Modeling Complex Physical
18. 4 Some Considerations in Modeling Complex Physical...
- 16.Unified
18. 5. 2 General Counterflow Heat Exchanger; 18. 5. 3...
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The quantitative relationship between heat transfer and temperature change contains all three factors: Q = mcΔT, where Q is the symbol for heat transfer, m is the mass of the substance, and ΔT is the change in temperature. The symbol c stands for specific heat and depends on the material and phase.
Q = mcΔT, where Q is the symbol for heat transfer (“quantity of heat”), m is the mass of the substance, and ΔT is the change in temperature. The symbol c stands for the specific heat (also called “ specific heat capacity ”) and depends on the material and phase.
The specific heat is the amount of heat necessary to change the temperature of 1.00 kg of mass by 1.00 ºC. The specific heat c is a property of the substance; its SI unit is J/(kg ⋅ ⋅ K) or J/(kg ⋅ ⋅ °C °C ).
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 / ).
27 Ιουν 2018 · The effectiveness-NTU method (NTU – number of transfer units) is used for cases where fluid mass flow rates, the inlet temperatures, and the type and size of the heat exchanger are specified, and the amount of heat transfer and exit temperatures are to be determined.
What is a heat exchanger?¶ A heat exchanger is a device or system used to transfer thermal energy between materials, typically two fluids or a solid and a fluid. Types of heat exchangers ¶
