Coefficient of performance of a refrigerator
WebA refrigerator requires 250 J of work and exhausts 580 J of heat per cycle. What is the refrigerator's coefficient of performance? I have read multiple ways of how to do this and keep getting the incorrect answer, so far I've submitted, 0.30, 0.76, and 2.3 and these values are incorrect. Expert Answer 100% (16 ratings) WebMay 22, 2024 · According to the above formula, the maximum achievable COP for T hot = 35 °C (308 K) and T cold = 0 °C (273 K) would be 8.8. But in reality the best systems are around 4.5. As can be seen, the COP of a heat pump system can be improved by …
Coefficient of performance of a refrigerator
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WebTon of Refrigeration (TR) is equal to the rate of energy removal need to freeze one ton of water in one day. One TR is defined at 12,000 Btu/hr, or 3.517 kW. A refrigeration … WebThe coefficient of performance or COP of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required. Refrigeration is a process of eliminating heat from a low temperature reservoir and transferring it to a high temperature reservoir.
WebWhat is the best possible coefficient of performance COPref for a refrigerator that cools an environment at -33.0°C and exhausts heat to another environment at 47.0°C? CO Pref = How much work W would this ideal refrigerator do to transfer 3.925 x 10 J of heat from the cold environment? WebMar 7, 2011 · Snapshot 3: an efficient mechanical refrigeration cycle with a coefficient of performance (COP) equal to 9 This Demonstration is intended to illustrate the use of the pressure-enthalpy diagram to calculate the energy efficiency of an ideal mechanical refrigeration system in terms of its coefficient of performance (COP).
WebCoefficient of Performance of Refrigerator is defined as heat supplied at lower temperature per unit of work done by refrigerator and is represented as COPRefrigerator = Qlow/RW or Coefficient of Performance of Refrigerator = Heat from Low Temperature Reservoir/Refrigerator work. WebA convenient measure of the performance of a refrigerator is expressed by the coeffi- cient of performance w, which is the ratio of the heat extracted from the low-tem- perature resevoir to the work done on the refrigerant. Unlike the thermal efficiency η, w may be considerably larger than unity.
WebA refrigerator has a coefficient of performance of 2.10. In each cycle it absorbs 3.10 $\times$ 10$^4$ J of heat from the cold reservoir. (a) How much mechanical energy is required each cycle to operate the refrigerator? (b) During each cycle, how much heat is discarded to the high-temperature reservoir?
WebMay 22, 2024 · Coefficient of Performance – Refrigerator, Air Conditioner. The coefficient of performance, COP, of a refrigerator is defined as the heat removed from the cold reservoir Q cold, (i.e. inside a … def of sconeWebThe primary advantages of a Peltier cooler compared to a vapor-compression refrigerator are its lack of moving parts or circulating liquid, very long life, invulnerability to leaks, small size, and flexible shape. Its main disadvantages are high cost for a given cooling capacity and poor power efficiency (a low coefficient of performance or COP ... feminist voices of afghanistanWebFeb 15, 2024 · To put it simply, the coefficient of performance (COP) measures the amount of heat energy moved in contrast to the amount of heat energy used. For … def of scornfullyWebCOP (coefficient of performance β) for an ideal refrigeration cycle is defined as the ratio of heat removed per cycle (Q L) from the substance to the work done per cycle ( W) to remove this heat . β= WQ L If Q H is the heat given to source at temperature T H , then by first law of thermodynamics Q L−Q H=−W or Q H−Q L=W Hence β= Q H−Q LQ L def of scopeWebQuestion: The thermal efficiency of a refrigerator is determined by the coefficient of performance COP, which is defined as the ratio of the amount of heat removed to the input of mechanical work needed for operation, or COP= Qout Win Part A An air conditioner operates exactly as a refrigerator; it removes heat from a cold place (a bedroom, for … feminist views of the familyWebWhat would be the coefficient of performance if the refrigerator (operating between the same temperatures) was instead used as a heat pump? COP = Question: (a) A certain refrigerator, operating between temperatures of −8.00°C and +24.3°C, can be approximated as a Carnot refrigerator. What is the refrigerator's coefficient of … feminist views on the role of educationWeb10 J of work are done per cycle on a refrigerator with a coefficient of performance of 5.0. How much heat is extracted from the cold reservoir per cycle? Express your answer using two significant figures. How much heat is exhausted to the hot reservoir per cycle? Express your answer using two significant figures. def of score