Question

Oil enters a counterflow heat exchanger at 600 K with a mass flow rate of 10...

Oil enters a counterflow heat exchanger at 600 K with a mass flow rate of 10 kg/s and exits at 350 K. A separate stream of liquid water enters at 20°C, 5 bar. Each stream experiences no significant change in pressure. Stray heat transfer with the surroundings of the heat exchanger and kinetic and potential energy effects can be ignored. The specific heat of the oil is constant, c = 2 kJ/kg · K.


If the designer wants to ensure no water vapor is present in the exiting water stream, what is the minimum mass flow rate for the water, in kg/s?

Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Oil enters a counterflow heat exchanger at 525 K with a mass flow rate of 10...
Oil enters a counterflow heat exchanger at 525 K with a mass flow rate of 10 kg/s and exits at 275 K. A separate stream of liquid water enters at 20°C, 5 bar. Each stream experiences no significant change in pressure. Stray heat transfer with the surroundings of the heat exchanger and kinetic and potential energy effects can be ignored. The specific heat of the oil is constant, c = 2 kJ/kg · K. If the designer wants to ensure...
Oil enters a counterflow heat exchanger at 525 K with a mass flow rate of 10...
Oil enters a counterflow heat exchanger at 525 K with a mass flow rate of 10 kg/s and exits at 275 K. A separate stream of liquid water enters at 20°C, 5 bar. Each stream experiences no significant change in pressure. Stray heat transfer with the surroundings of the heat exchanger and kinetic and potential energy effects can be ignored. The specific heat of the oil is constant, c = 2 kJ/kg · K. If the designer wants to ensure...
Air enters a counterflow heat exchanger operating at steady state at 22°C, 0.1 MPa and exits...
Air enters a counterflow heat exchanger operating at steady state at 22°C, 0.1 MPa and exits at 7°C. Refrigerant 134a enters at 0.2 MPa, a quality of 0.21, and a mass flow rate of 30 kg/h. Refrigerant exits at 0°C. There is no significant change in pressure for either stream. (a) For the Refrigerant 134a stream, determine the rate of heat transfer, in kJ/h (b) For the refrigerant stream evaluate the change in flow exergy rate, in kJ/h. (c) For...
Cold water enters a counter flow heat exchanger at 20ºC at a rate of 10 kg/s,...
Cold water enters a counter flow heat exchanger at 20ºC at a rate of 10 kg/s, where it is heated by a hot water stream that enters the heat exchanger at 80ºC at a rate of 2 kg/s. Assuming the specific heat of water to remain constant at Cp=4.18 kJ/(kg.ºC), determine the maximum heat transfer rate and the outlet temperatures of the cold and the hot water streams.
a tube-within-a-tube heat exchanger operating at steady state is composed of one pipe containing Refrigerant 134a...
a tube-within-a-tube heat exchanger operating at steady state is composed of one pipe containing Refrigerant 134a and another pipe containing an ideal gas with constant specific heat at constant pressure of 1.2 kJ/(kg∙K). The refrigerant 134a enters the heat exchanger in a saturated liquid state and exits the heat exchanger in a saturated vapor state. The temperature and mass flow rate of the refrigerant 134a are -20° C and 3 kgs/s, respectively, at both its inlet and outlet. The ideal...
Water is used to cool R-134a in the condenser of a heat exchanger. The refrigerant enters...
Water is used to cool R-134a in the condenser of a heat exchanger. The refrigerant enters the counter-flow heat exchanger at 800 kPa, 80 0C and a mass flow rate of 2 kg/s. The refrigerant exits as a saturated liquid. Cooling water enters the condenser at 500 kPa and 18 0C and leaves the condenser at 30 0C. Determine the necessary mass flow rate of water. Each fluid is assumed to flow at constant pressure.
An adiabatic counterflow heat exchanger receives 0.3 m3/s of saturated steam vapor at 200 kPa and...
An adiabatic counterflow heat exchanger receives 0.3 m3/s of saturated steam vapor at 200 kPa and condenses it to a saturated liquid on the shell side.   Water enters the tubes at 25 C and leaves at 40 C.   Determine the second law efficiency for the heat exchanger.
heat transfer problem A counterflow concentric tube heat exchanger is used to cool lubricant oil of...
heat transfer problem A counterflow concentric tube heat exchanger is used to cool lubricant oil of a big gas turbine. The cooling water's flow rate through the interior aluminum tube (Di= 25mm) is 0.2kg/seg, while the oil's flow rate through the exterior ring (Do= 45mm) is 0.1kg/seg. The oil and the water enter at 100°C and 30°C respectively. How long does the tube have to be for oil to leave at 60°C? Oil at 80°C Cp = 2131 J/Kg K...
Methane enters a heat e xchanger at a volumetric flow rate of 145.0 m 3 /min,...
Methane enters a heat e xchanger at a volumetric flow rate of 145.0 m 3 /min, at an absolute pressure of 1.013 bar and temperature of 15.0°C. At these conditions, the specific enthalpy of methane is - 23.181 kJ/kg. The methane leaves the heat exchanger at an absolute pressure of 1.0 13 bar and temperature of 60.0°C. The corresponding specific enthalpy at these conditions is 78.656 kJ/kg. The methane is heated by a stream of saturated steam entering the heat...
Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a...
Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a compressor operating at steady state and exits at 3 bar. During the compressing from inlet to exit, the air experiences a polytropic process as PV^n=constant. m=6, n=1.48. (1) Determine the power required by the compressor. (2) Determine the heat transfer between the compressor and the surrounding. (s) Determine the rate of exergy destruction. Kinetic and potential energy effects are negligible. Let T_0 = 300...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT