Q: A shell-and-tube heat exchanger with two shell passes
A shell-and-tube heat exchanger with two shell passes and eight tube passes is used to heat ethyl alcohol (cp = 2670 J/kg⋅K) in the tubes from 25°C to 70°C at a...
See AnswerQ: A single-pass crossflow heat exchanger is used to cool jacket
A single-pass crossflow heat exchanger is used to cool jacket water (cp = 1.0 Btu/lbm⋅°F) of a diesel engine from 190°F to 140°F, using air (cp = 0.2...
See AnswerQ: What does the effectiveness of a heat exchanger represent? Can effectiveness
What does the effectiveness of a heat exchanger represent? Can effectiveness be greater than 1? On what factors does the effectiveness of a heat exchanger depend?
See AnswerQ: For a specified fluid pair, inlet temperatures, and mass flow
For a specified fluid pair, inlet temperatures, and mass flow rates, what kind of heat exchanger will have the highest effectiveness: double-pipe parallel-flow, double-pipe counterflow, crossflow, or...
See AnswerQ: Explain how you can evaluate the outlet temperatures of the cold and
Explain how you can evaluate the outlet temperatures of the cold and hot fluids in a heat exchanger after its effectiveness is determined.
See AnswerQ: Can the temperature of the hot fluid drop below the inlet temperature
Can the temperature of the hot fluid drop below the inlet temperature of the cold fluid at any location in a heat exchanger? Explain.
See AnswerQ: Under what conditions is the thermal resistance of the tube in a
Under what conditions is the thermal resistance of the tube in a heat exchanger negligible?
See AnswerQ: Consider a heat exchanger in which both fluids have the same specific
Consider a heat exchanger in which both fluids have the same specific heats but different mass flow rates. Which fluid will experience a larger temperature change: the one with the lower or higher mas...
See AnswerQ: Under what conditions can a counterflow heat exchanger have an effectiveness of
Under what conditions can a counterflow heat exchanger have an effectiveness of 1? What would your answer be for a parallel-flow heat exchanger?
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