7 9. The effluent from a gas compressor is cooled by contacting with water in a heat exchanger. The operatingparameters for this system are given in the diagram below.water outwater inwsTB = 35°CCompressorTA = 15°CP, = 104 kPaT, = 30°Cm, = 35 kg/min1Heat Exchanger3P2 = 255 kPaT2 = 143°CP3 = 255 kPaT3 = 65°CAssuming natural gas to behave as an ideal gas and negligible heat losses to the surroundings, calculate:a. power requirement for the compressor and the required cooling water mass flow rate for the heatexchanger.b. entropy production rate for the compressor and for the heat exchanger separately.

Heat exchangers are of two types that is counter flow and parallel flow type heat exchanger . The…

9. The effluent from a gas compressor is cooled by contacting with water in a heat exchanger. The operating parameters for this system are given in the diagram below. water out water in ws Te = 35°C Compressor TA = 15°C P, = 104 kPa T, = 30°C m, = 35 kg/min 1 2 Heat Exchanger 3 P2 = 255 kPa T2 = 143°C P, = 255 kPa T3 = 65°C Assuming natural gas to behave as an ideal gas and negligible heat losses to the surroundings, calculate: a. power requirement for the compressor and the required cooling water mass flow rate for the heat exchanger. b. entropy production rate for the compressor and for the heat exchanger separately.

9. The effluent from a gas compressor is cooled by contacting with water in a heat exchanger. The operating parameters for this system are given in the diagram below. water out water in ws Te = 35°C Compressor TA = 15°C P, = 104 kPa T, = 30°C m, = 35 kg/min 1 2 Heat Exchanger 3 P2 = 255 kPa T2 = 143°C P, = 255 kPa T3 = 65°C Assuming natural gas to behave as an ideal gas and negligible heat losses to the surroundings, calculate: a. power requirement for the compressor and the required cooling water mass flow rate for the heat exchanger. b. entropy production rate for the compressor and for the heat exchanger separately.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.49P

See similar textbooks

Similar questions

Welded ______sealed compressors are normally used in household refrigerators.
A heat exchanger is heating water from 50 0 F to 160 0 F using steam on the shell at atmospheric pressure condensing at 212 0 F. If the overall U is 710 BTU/(hr 0 F ft2) and the exchange rate is 9,000,000 BTU/hr, what tube area is needed?
1. Explain and analyze log mean temperature differences for parallel and counter-flow conditions in simple, double-pipe heat exchanger
Water enters the single shell,two-pass heat exchanger at 16°C and leaves at 40°C. It is heated by gases that enter at 120°C and leave at 38°C. Determine the true mean temperture difference. A. 44.93K B. 36K C. 27K D. 50K
consider parallel flow heat exchanger
2. Explain and analyze effectiveness and heat transfer coefficients for parallel and counter-flow conditions in simple, double-pipe heat exchanger
In general, heat exchangers with higher flow rates have greater capacities?
Water enters the pump of a steam power plant at 15 kPa and 50°C at a rate of 0.15 m3 /s. The diameter of the pipe at the pump inlet is 0.25 m. What is the net positive suction head (NPSH) at the pump inlet? (a) 1.70 m (b) 1.49 m (c) 1.26 m (d) 0.893 m (e) 0.746 m
Saturated propane vapor at 2:00 x 102 psia is fed to a well-insulated heat exchanger at a rate of 3:00 x 103 SCFH (standard cubic feet per hour). The propane leaves the exchanger as a saturated liquid (i.e., a liquid at its boiling point) at the same pressure. Cooling water enters the exchanger at70°F, flowing cocurrently (in the same direction) with the propane. The temperature difference between the outlet streams (liquid propane and water) is 15°F.(a) What is the outlet temperature of the water stream? (Use the Antoine equation.) Is the outlet water temperature less than or greater than the outlet propane temperature? Briefly explain.(b) Estimate the rate (Btu/h) at which heat must be transferred from the propane to the water in the heat exchanger and the required flow rate (lbm/h) of the water. (You will need to write two separate energy balances.) Assume the heat capacity of liquid water is constant at 1.00 Btu/(lb m°F) and neglect heat losses to the outside and the effects of…
Concentric Tube Heat Exchanger For equivalent inlet conditions, why should a counterflow heat exchanger have better effectiveness than a parallel unit?
In a single-body, four-pipe transition heat exchanger, the hot combustion product gases are cooled by water. Flow of gases 3 kg / s, specific temperature0.95 kJ / kg.°C; water flow 0.2 kg / s, specific temperature 4.2 kJ / kg.°C dir. The total heat transfer coefficient of the heat exchanger is 300 W / m2.K, heat transfer surface area is 10 m2.a) the heat transfer that occurs and the output temperatures of both fluids;b) find the logarithmic mean temperature difference.
In an heat exchanger of parallel flow type, water enters at 60°C and leaves at 80°C while oil of specific gravity 0.8 enters at 250°C and leaves at 100°C. The specific heat of oil is 2.5 kJ/kg K and surrounding temperature is 300 K. Determine the loss in availability on the basis of one kg of oil flow per second.