heat pump with a coefficient of performance of 2.5 supplies energy to a house at a rate of 60,000 Btu/h. Determine (a) the electric pwer drawn by the heat pump and (b) the rate of heat absoption from the outside air.

Q: The heat removal rate from a refrigerated space is 7.2 kW and the power input to the compressor is…

A: Given, Rate of heat removal from refrigerated space = Q2 = 7.2 kW Power input = W = 1.8 kW…

Q: An inventor claims to have invented a heat engine that receives 750kJ of heat from a source at 400K…

A:

Q: heat engine is operating on a Carnot cycle and has a thermal efficiency of 58.08 percent. The waste…

A: Given Data Efficiency=58.08 % TL=63.48 °F QL=848.62 BTU/min

Q: Consider a building whose annual air-conditioning load is estimated to be 150,000 kWh in an area…

A: Given: The annual air-conditioning load is W=150,000 kWh, The unit cost of electricity is…

Q: To maintain a dwelling steadily at 68°F on a day when the outside temperature is 40°F, heating must…

A:

Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 56.2 percent. The waste…

A:

Q: A refrigeration system absorbs heat from a space at 2 ◦C at a rate of 6.9 kW and rejects heat to…

A:

Q: Estimate the annual operating cost for a heat pump that delivers 30,000 BTU per hour of heat during…

A:

Q: Determine the expressions for the thermal efficiencies and coefficients of performance for…

A:

Q: b) On a winter day when the average outdoor temperature remains at about 4°C, the house is estimated…

A: Heat Transfer: The transfer of heat from one body to another body due to the difference in…

Q: 3. A heat engine operates between two reservoirs at 700°C and 20°C. One-half of the work output of…

A: Find , Minimum rate of heat supply to heat engine.

Q: An absorption refrigeration system provides 24 kW of cooling while receiving 18 kW of solar heat…

A: Given data Q=24 kWWin=18 kW Here, Q is the heat supplied and W is the work input to the…

Q: Refrigerant as a work fluid to keep an environment at 25 ° C. A heat pump using 134a is used. The…

A: The environment temperature of refrigerant fluid is given as,TL=25∘C The evaporator entering…

Q: An inventor claims to have developed a heat pump with a COP of 6.6 when operating with thermal…

A:

Q: A Carnot heat engine receives heat from a reservoir at 700 ° C at a rate of 600 kJ / min and rejects…

A: Given Data Temperature of the hot reservoir is: TH=700°C=973 K Heat received from the engine is:…

Q: Explain how you can reduce the energy consumption of your household refrigerator.

A: The energy consumption of household refrigerator can be reduced by various ways- (1). Do not place…

Q: 6. A heat pump absorbs heat from the cold outdoors at 3°C and supplies heat to a house at 20°C at a…

A: Given data :-The Outdoor temperature The temperature inside House Rate of heat supplied Power…

Q: A refrigeration unit absorbs 1 kW of heat from the cold reservoir and rejects 1.3 kW of heat to the…

A:

Q: A Carnot heat engine operates between a source at 727 °C and a sink at 27 °C If the heat engine is…

A:

Q: An inventor claims to have devised a refrigeration cycle operating between hot and cold reservoirs…

A: Given data:-  Temperature of hot reservoirs = 30 K                         Temperature of cold…

Q: Why are today’s refrigerators much more efficient than those built in the past?

A: Given Modern refrigeration To find Modern refrigeration effectiveness

Q: why the coefficient of performance of a heat pump is always greater than 1. Use values such as W,…

A: The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air…

Q: A food compartment is to be maintained at 21°C by a refrigeration system. The total cooling load of…

A:

Q: b) On a winter day when the average outdoor temperature remains at about 4°C, the house is estimated…

A: Heat pump: The device that is used for transfer heat is called a heat pump. Refrigerators and air…

Q: A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when…

A: The COP of the heat pump can be determined as shown below.

Q: Explain the principle of refrigerator? Show that a reversible heat engine acts as a refrigerator.

A: Principle of refrigeration: Refrigeration is the cooling of a system below the temperature of its…

Q: To maintain a dwelling steadily at 68°F on a day when the outside temperature is 30°F, heating must…

A: (a) To find: The electrical power required. Given: The temperature of the hot reservoir is…

Q: A household refrigerator with a COP of 1.25 removes heat from the refrigerated space at a rate of…

A:

Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 59.41 percent. The…

A:

Q: The energy absorbed from

A: Given data; Heat engine efficiency;  η=60%=0.60It is used to drive a refrigerator having;  COP= 3For…

Q: the condensing temperature is to be limited to 55°C, what is the maximum allowable ambient…

A:

Q: 2. Consider a heat engine that operates between high temperature reservoir at 650°C and a heat sink…

A: Given data High temperature reservoir is at 650°CHeat sink is at 30°CRefrigerated space is at…

Q: The heat removal rate from a refrigerated space and the power input to the compressor are 8.5kW and…

A: Given data: QL=8.5 kWWin=1.7 kW Need to determine the coefficient of performance of the…

Hydronics