Question

A parallel flow heat exchanger is used to transfer heat from hot water at 80oC, flowing...

A parallel flow heat exchanger is used to transfer heat from hot water at 80oC, flowing at 5 L/min to cold water at 15oC which is flowing at a rate of 15 L/min. The overall heat transfer coefficient is 2000 W/m2oC and the area is 0.2m2.

Calculate the heat transfer rate, the outlet temperature of the cold water.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Hot water enters a counter-flow double-pipe heat exchanger at 180F with a velocity of 5 ft/s....
Hot water enters a counter-flow double-pipe heat exchanger at 180F with a velocity of 5 ft/s. Cold water at 80F flows at 3 ft/s in the outer section of the exchanger. The diameter of the inner pipe is 1 inch, the pipe wall thickness is 1/8", and the outer pipe diameter is 2 inches. The overall heat transfer coefficient times area per unit length UA/L = 150 Btu/hr-ft-F. If the exchanger is 16 feet long, what is the exit temperature...
A process fluid having a specific heat of 3500 J/kg?K and flowing at 2 kg/s is...
A process fluid having a specific heat of 3500 J/kg?K and flowing at 2 kg/s is to be cooled from 80 °C to 40 °C with chilled water, which is supplied at a temperature of 15 °C and a flow rate of 2.5 kg/s. Assuming an overall heat transfer coefficient of 2000 W/m2?K, calculate the required heat transfer areas for the following exchanger configurations: (a) Parallel flow; (b) Counter flow; (c) a 1-2 shell and tube exchanger with the water...
A hot fluid of specific heat 4100 J/kg K flows through a parallel flow heat exchanger...
A hot fluid of specific heat 4100 J/kg K flows through a parallel flow heat exchanger at the rate of 3.5 kg/min with an inlet temp. of 105C. A cold fluid of specific heat 2350 J/kg K flows in at a rate of 9 kg/min and with inlet temperature 25C. Make calculations for maximum possible effectiveness if the fluid flow conforms to parallel flow arrangement.
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 counter current double pipe heat exchanger is used to boil but not superheat water at...
A counter current double pipe heat exchanger is used to boil but not superheat water at 100 DegreeC at rate of about 0.1 kg/s. This is achieved by flowing hot oil at 400 DegreeC through the inner pipe at a rate of 5 kg/s. Latent heat of water: 2265 kJ/kg Heat capacity of water: 4180 J/kgK Heat capacity of the oil: 1800 J/kgK What is the temperature of he hot oil leaving the heat exchanger? What is the overall heat...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280 K and leaving at 301 K only the latent heat of vaporization is removed from the steam. i.e. the steam is condensed and saturated water exit the exchanger. a) what is the LMTD for a counter current heat exchanger? b) what is the LMTD for a parallel or cocurrent heat exchanger? c) if the counter current heat exchanger has a duty (Q) of 81000...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280...
A heat exchanger uses saturated steam at 375 K to heat cold water entering at 280 K and leaving at 301 K. Only the latent heat of vaporization is removed from the steam, i.e. the steam is condensed and saturated water exits the exchanger. (a) What is the LMTD for a counter-current heat exchanger? (b) What is it for a parallel heat exchanger (c) If the counter-crrent heat exchanger has a duty(Q) of 81000 kJ/hour and an overall heat transfer...
A 1.5cm inside diameter tube has water flowing in it at a flow rate such that...
A 1.5cm inside diameter tube has water flowing in it at a flow rate such that the Reynolds number is 50,000. The water enters the tube at 10oC and the tube wall temperature is maintained at 15oC higher than the average water bulk temperature. Calculate: a) the amount of heat transfer required to achieve a 10oC increase in water temperature (in W) b) the length of the tube to achieve this amount of heat transfer (in meters)
A thin-walled double pipe counter flow heat exchanger is to be used to cool oil (cp...
A thin-walled double pipe counter flow heat exchanger is to be used to cool oil (cp = 2200 j/kg*K) from 150 ℃ to 30 ℃ at a rate of 2.1 kg/s by water (cp= 4180 J/kg*K) that enters at 20 ℃ at a rate of 1.2 kg/s. The diameter of the tube is 2.5 cm, and its length is 10 m. Using Excel (a) Determine the overall heat transfer coefficient of this heat exchanger. (b) Investigate the effects of oil...
City water will be cooled in a heat exchanger by sea water entering at 15°C. The...
City water will be cooled in a heat exchanger by sea water entering at 15°C. The outlet temperature of the sea water is 20°C. City water will be recirculated to reduce water consumption. The suction line of the pump has an inner diameter of 154 mm, is 22 m long, and has two 90° bends and a hinged check valve. The pipe from the pump to the heat exchanger has an inner diameter of 127 mm, is 140 m long,...