What is the coefficient of performance of an ideal heat pump
that has heat transfer from a cold temperature of -25.0°C to a hot
temperature of 40.0°C.
What is the coefficient of performance of an ideal heat pump that has heat transfer from...
What is the coefficient of performance of an ideal heat pump that extracts heat from 5.0 ∘C air outside and deposits heat inside a house at 23 ∘C ? (The answer is 16. COP=16.) If this heat pump operates on 1200 W of electrical power, what is the maximum heat it can deliver into the house each hour? (This is what I am having trouble answering. The answer is not to multiply 16 and 1200 to get 19,200 J, nor...
19) What is the best coefficient of performancg for a heat pump that has a hot reservoir temperature of 50.0°C and a cold reservoir temperature of -20.0°C? a)3.62 6 c 0.28 d) 4,61 1.28 Comes from 15.5 Applications of Thermodynamics: Heat Pumps and Refrigerators
a)An ideal heat pump is being considered for use in heating an environment with a temperature of 22.4°C. What is the cold reservoir temperature (in degrees C) if the pump is to have a coefficient of performance of 11.7? °C
Problem 2) A heat pump cycle whose coefficient of performance is 2.5 delivers energy by heat transfer to a dwelling at a rate of 20 kW. (a) Determine the net power required to operate the heat pump, in kW. (b) Evaluating electricity at $0.08 per determine the cost of electricity in a month when the heat pump operates for 200 hours. Problem 3) A power cycle receives energy by heat transfer from the combustion of fuel at a rate of 300 MW. The thermal efficiency...
Operating in series are two reversible heat pumps. Heat transfer gives energy to the first cycle from a cold reservoir at 105 K and rejects energy by heat transfer to a reservoir at an intermediate temperature T greater than 105 K. The second cycle receives energy by heat transfer from the reservoir at T and rejects energy by heat transfer to a higher-temperature reservoir at 1200 K. If the heat pump cycles have the same co-efficient of performance, calculate: Low...
SP3. A Carnot engine operating in reverse as a heat pump moves heat from a cold reservoir at 7°C to a warmer one at 22°C. a) What is the efficiency of a Carnot engine operating between these two temperatures? b) If the Carnot heat pump releases 250 J of heat into the higher-temperature reservoir e co in each cycle, how much work must be provided in each cycle? c) How much heat is removed from the 7°C reservoir in each...
If the coefficient of performance for a heat pump is 5.60, determine the amount of heat pulled in from the cooler outside air for every 1.00 J of work put into the heat pump. Number
earning Goal: To understand that a heat engine run backward is a heat pump that can be used as a refrigerator. By now you should be familiar with heat engines--devices, theoretical or actual, designed to convert heat into work. You should understand the following: Heat engines must be cyclical; that is, they must return to their original state some time after having absorbed some heat and done some work). Heat engines cannot convert heat into work without generating some waste...
Thermo question A reversible power cycle and a reversible heat pump cycle operate between hot and cold reservoirs at temperature T_H = 1000 degree R and T_C respectively. If the thermal effciency of the power cycle is 60%, determine T_C, in degree R, and the coefficient of performance of the heat pump.
A Stirling-engine is used in the heat-pump mode to heat a house. The engine maintains a temperature of 20.5 °C inside the house. The temperature of the Earth loop is 14.1 °C. (The Earth loop buried deep under the ground is the cold reservoir of this heat pump.) What is the coefficient of performance of this heat pump? Tries 0/12 If the power of the electric motor driving the heat pump is 157 W, then what is the rate at...