In a refrigerating machine heat rejected is
WebMar 30, 2024 · In a vapour compression refrigerator, the heat rejected in condenser is 1500 kJ/kg of refrigerant flow and the work done by compressor is 250 kJ/kg. The COP of the … WebWaste heat or heat rejection is by necessity produced both by machines that do work and in other processes that use energy , for example in a refrigerator warming the room air or a …
In a refrigerating machine heat rejected is
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WebJun 29, 2024 · In a refrigerating machine, heat rejected is _____ heat absorbed. A). Equal to B). Less than C). Greater than D). None of these In a refrigerating machine, heat rejected … WebIn a refrigerating machine, heat rejected is ..... heat absorbed. answer choices . Equal to. Less than . Greater than . partially less than Equal to ... When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be. answer choices (A) 1.33 (B) 2.33 (C) 3.33
WebQuestion 7 : The C.O.P of a refrgerating machine ,when lower temperature is fixed ,can be improved by. Option-3 : heat absorbed in the cycle from the body or space to be cooled. Question 9 : One tonne refrigeration in S.I units is equivalent to. Option-1 : The co- efficient of performance is always less than one. WebThe temperature in a refrigerator evaporator coil is -6 °C and that in the condenser coil is 22 °C. Assuming that the machine operates on the reversed Carnot cycle, calculate the COPref, the refrigerating effect per kilowatt of input work, and the heat rejected to the condenser. Suggested Answers: [9.54; 9.54 kW; 10.54 kW] Expert Answer
WebAssuming that the machine operates on the reversed Carnot cycle, calculate: (a) The COP of the refrigerator. (b) The refrigerant effect per kW of input work. (c) The heat rejected to the condenser. ii- A compressor manufacturing company manufactures one model of compressor used for air conditioning applications. WebIn a refrigerating machine, heat rejected is greater than heat absorbed. Image Not Yet Uploaded! Will be updated soon ... Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers. 5) The humidity ratio or specific humidity is the mass of water vapour present in . 1 m 3 of wet air. 1 m 3 of dry air. 1 kg of wet air ...
WebHeat is added at the high-pressure generator from a gas burner, steam, hot water or hot gases. The added heat causes the refrigerant to desorb from the absorbent and vaporize. …
WebHeat of Compression + Evaporating Load = Total Heat of Rejection . Heat of Compression = 22,100 Btu . Evaporating Load = 40,200Btu Total Heat of Rejection = 62,300 Btu. Total Heat of Rejection (THR) is the heat absorbed at the evaporator plus the heat picked up in the … brian first datesWebJul 19, 2024 · The temperature in a refrigerator coil is 267K and that in the condenser coil is 295K. Assuming that the machine operates on the reversed Carnot cycle, calculate : (i) … brian fischer surfboardsWebRefrigeration Cycle Heat flows in direction of decreasing temperature, i.e., from high-temperature to low temperature regions. The transfer of heat from a low-temperature to high-temperature requires a refrigerator and/or heat pump. Refrigerators and heat pumps are essentially the same device; they only differ in their objectives. courier gippslandWebA cycle with heat rejection at 31°C would have a much lower refrigerating effect than one condensing at, say 27°C. Above the critical point, the gas cannot be condensed, and it is … courier guy boksburgWebThis will reverse the direction of heat and work interactions, therefore producing a refrigeration cycle. The cycle consists of 1-2: Isothermal heat transfer from cold medium to refrigerant (Evaporator) 2-3: Isentropic (Reversible adiabatic) compression 3-4: Isothermal heat rejection (condenser) 4-1: Isentropic Expansion brian fischer podiatryWebOption-1 : removes heat from a high temperature region to transfer it to a low temperature region. Option-2 : rejects energy to a low temperature region. Option-3 : removes heat … courier guy bakkie contractWebIn a refrigerating machine, heat rejected is ________ the heat absorbed. a) equal tob) less than c) in unity with d) greater than Answer: dExplanation: Heat rejected in refrigerating machine is always more than the heat absorbed because as the evaporatio n increases i.e. heat rejection, more will be the refrigerating effect. 6. courier gazette rockland maine obituaries