R134-a enters the condenser of a residential heat pump at 800 kPa and 40°C at a rate of 0.018 kg/s, and leaves at 800 kPa with quality equal to zero. If the compressor consumes 1.2 kW of power, determine the COP of the pump. heat and the rate of heat absorption from the outside air.

Q: A piston-cylinder device initially contains 2 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

A: Given data: m=2 kgP1=100 kPaT1=20°CP2=120 kPaT2=80°CTo=25°CPo=100 kPa Need to determine the work…

Q: Air enters the compressor of a gas-turbine engine at 300 K and 100 kPa, where it is compressed to…

A: Given Data  Properties of air at room temperature  Cp=1.005 KJ/Kg-K k=1.4 rP=P2P1=700100=7

Q: An oil supply of 1 kg/is heated from 15 C to 70 C. A 0.3 kg/s supply of water at 95 C is available.…

A: Giivenmo=1 kg/sTo1=15oCTo2=70oCmw=0.3 kg/sTw1=95C

Q: The vapour compression cycle below (Figure Q4) utilises the refrigerant R134a flowing at 0.05 kg s¹.…

A:

Q: A completely insulated mixing vessel is designed to deliver water at 60 ⁰C and atmospheric pressure…

A:

Q: A flashed-steam geothermal power plant is located where underground hot water is available as…

A:

Q: Air at 14.7 psia, 70°F, enters a compressor with negligible velocity and is discharged at 50 psia,…

A:

Q: Air as ideal gas enters a compressor at inlet pressure 96 kPa, T₁ = 27C and volumetric flow rate is…

A:

Q: Refrigerant 134 A enters in a condenser of a heat pump at 200 kPa and -4 0C and exits with a quality…

A: Answer: The coefficient of performance of the heat pump: (COP)H.P. = 4.0118

Q: Given 0.603MW electrical power supplied to a boiler when the temperature of the entering water is 20…

A: The inlet and exit temperature respectively are 20 degree Celsius and 89 degree Celsius. Also, the…

Q: A compressor in a plant receives air at 100 kPa, 280 K, with low  velocity. At compressor discharge,…

A: Let T1 = Temperature at inlet of compressor =280K T2 =Temperature at outlet of compressor =500K T3…

Q: A cooler is used to cool water from 30°C to 5°C. The cooler has steady- flow, and the mass flow rate…

A: Given:Initial temperature of water, Ti=30°CFinal temperature of water, Tf=5°CMas flow rate of water,…

Q: Refrigerant (known as R-134a) enters a heat exchanger at 100 kPa. The refrigerant is of 20% quality…

A: Given data: The pressure of refrigerant in the heat exchanger is P = 100 kPa. The dryness fraction…

Q: 15- R134a enters a compressor with a heat loss of 200 W as saturated steam at -24 ºC and after…

A: Solution : from the properties of R-134 a  @-24°C density of gas =5.76162 kg/m3

Q: 3. A 1.5 kW pump delivers 1.2 kg/s water to a building. The water comes in at 100 kPa, and 15°C. The…

A: Given data

Q: Refrigerant 134a enters an air-cooled condenser at 12 bars and 60°C, and leaves as a saturated…

A:

Q: Refrigerant 134-a enters the condenser of a residential heat pump at 800kPa and 35°C at a rate of…

A: Given: Saturation pressure of the condenser→Pc=800 KPa At this saturation pressure from the R134a…

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.