Description : The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a ... )R = 1.5; (COP)HP = 2.5 (D) (COP)R = (COP)HP = 2.5
Last Answer : (C) (COP)R = 1.5; (COP)HP = 2.5
Description : Co-efficient of Performance (COP) of a refrigerator is the ratio of the (A) Work required to refrigeration obtained (B) Refrigeration obtained to the work required (C) Lower to higher temperature (D) Higher to lower temperature
Last Answer : (B) Refrigeration obtained to the work required
Description : The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is (A) Less (B) More (C) Same (D) Dependent on climatic conditions
Last Answer : (A) Less
Description : Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is (A) 3 (B) 5 (C) 0.5 (D) 1.5
Last Answer : Option A
Description : Is there a device that I can plug my refrigerator into, that will cycle the fridge on and off in order to save energy?
Last Answer : Your refrigerator already has a thermostat that does just that. If you cycled it off more than the thermostat calls for, its internal temperature would rise, introducing food safety and spoilage risks.
Description : What form of energy runs a refrigerator?
Last Answer : Most types of energy work in principle, but usuallyrefrigerators are designed to work on electrical energy; some(designed to not rely on the electrical network) might also have anengine that runs on gasoline or some similar fuel.
Description : If a refrigerator is a heat pump that follows the first law of thermodynamics how much heat was removed from food inside of the refrigerator if it released 240J of energy to the room?
Last Answer : Not enough information. The refrigerator must also follow theSecond Law.The energy released to the room is the energy removedfrom the room, PLUS the energy used by the refrigerator (forexample, as electrical energy).
Description : Is the Amana Easy Reach Plus 18.5 CuFt Bottom-Freezer Refrigerator a energy wise choice?
Last Answer : This refrigerator is not Energy Star qualified.
Description : Which brand of refrigerator uses the least energy?
Last Answer : ENERGY STAR has qualified models that use less energy than older refrigerators. This is their site: www.energystar.gov
Description : Does this refrigerator have an Energy Star rating?
Last Answer : This refrigerator is listed as being energy star complaint,so it has low energy consumption
Description : Can I reduce energy with an energy star refrigerator?
Last Answer : With an ENERGY STAR qualified refrigerator, you can maximize your energy and dollar . You can save money by slashing your electric bill in half as well as protect the environment.
Description : Appliances which need to have energy Star rating mandatorily: a. Refrigerator c. AC b. TV d. All of above
Last Answer : All of above