Q: How is the thermal resistance due to fouling in a heat exchanger
How is the thermal resistance due to fouling in a heat exchanger accounted for? How do the fluid velocity and temperature affect fouling?
See AnswerQ: One pound-mass of water fills a container whose volume is
One pound-mass of water fills a container whose volume is 2 ft3. The pressure in the container is 100 psia. Calculate the total internal energy and enthalpy in the container.
See AnswerQ: Oil is being cooled from 180°F to 120°F
Oil is being cooled from 180°F to 120°F in a one shell and two-tube heat exchanger with an overall heat transfer coefficient of 40 Btu/h⋅ft2⋅&...
See AnswerQ: 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 rate of 2.1 kg/s. The heating is to be...
See AnswerQ: Cold water (cp = 4180 J/kg⋅K)
Cold water (cp = 4180 J/kg⋅K) enters the tubes of a heat exchanger with two shell passes and 23 tube passes at 14°C at a rate of 3 kg/s, while hot oil (cp = 2200 J/kg⋅K) enters the shell at 200°C at t...
See AnswerQ: In a one-shell and eight-tube-pass heat
In a one-shell and eight-tube-pass heat exchanger, the temperature of water flowing at rate of 50,000 lbm/h is raised from 70°F to 150°F. Hot air (cp = 0.25 Btu/lbm⋅°F) that flows on the tube side ent...
See AnswerQ: Air (cp = 1005 J/kg⋅K) enters
Air (cp = 1005 J/kg⋅K) enters a crossflow heat exchanger at 20°C at a rate of 3 kg/s, where it is heated by a hot water stream (cp = 4190 J/kg⋅K) that enters the heat exchanger at 70°C at a rate of 1...
See AnswerQ: A crossflow heat exchanger with both fluids unmixed has an overall heat
A crossflow heat exchanger with both fluids unmixed has an overall heat transfer coefficient of 200 W/m2⋅K and a heat transfer surface area of 400 m2. The hot fluid has a heat capacity of 40,000 W/K,...
See AnswerQ: A crossflow air-to-water heat exchanger with an effectiveness
A crossflow air-to-water heat exchanger with an effectiveness of 0.65 is used to heat water (cp = 4180 J/kg⋅K) with hot air (cp = 1010 J/kg⋅K). Water enters the heat exchanger at 20°C at a rate of 4 k...
See AnswerQ: Cold water (cp = 4.18 kJ/kg⋅
Cold water (cp = 4.18 kJ/kg⋅K) enters a crossflow heat exchanger at 14°C at a rate of 0.35 kg/s where it is heated by hot air (cp = 1.0 kJ/kg⋅K) that ent...
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