Explain the thermodynamics cycle of a refrigerator?
Q: Refrigerant 134a is the working fluid in a vapor-compression heat pump that provides 35 kw to heat a…
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Q: Explain the principle of operation of a refrigerator (include a simple diagram).
A: Refrigerator is a device which gives refrigerating effect by consuming work.
Q: A heat engine is assumed to operate on a Carnot cycle. It receives 900kJ heat from a high…
A: "Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…
Q: What is the highest COP that a refrigerator operating between temperature levels TL and TH can have?
A: The maximum COP(Coefficient of performance)in a refrigerator is possible only when it runs on…
Q: 1_ what Proposed integration of thermoelectric refrigerator with the PV solar system?
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Q: heat removal rate from a refrigerated space and the power input to the compressor are 9.0kW and…
A: Given:HRR=9 kWW=1.8 kW
Q: What is an adiabatic and an isothermal in thermodynamic cycle
A: Thermodynamic cycles are processes in which state of matter changes from one state to another.
Q: Describe the function and components of a heat engine?
A: An engine that transforms the chemical energy of the fuel into thermal energy which is made used for…
Q: How to express the coefficient of performance of a standard refrigerator in terms of the enthalpies…
A: The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air…
Q: The co-efficient of performance of a refrigerator work- ing on a reversed Carnot cycle is 4. The…
A: Let us take, Lower temperature = TL Higher temperature = TH Given, COP of refrigerator = COPref =…
Q: With ph, ts diagram A refrigerator based on ideal vapor compression cycle operates…
A: GivenT1=-20oCT2=40oC
Q: (1) A reversed Carnot cycle is used for refrigeration and rejects 1,000 kW of heat at 340 K while…
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Q: A refrigerator uses refrigerant 134a as the working fluid and operates on an ideal vapor-…
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Q: Is it true or false for any gas? Cp - Cv = R also , the Whp = Wr + 1 for control refrigerator
A: It is asked to validate the relation Cp-Cv = R and COP ,HP = COP,R +1
Q: What is the COP of an ideal heat-operated refrigeration cycle that receives the energizing heat from…
A: Given question belongs to the subject Refrigeration & Air conditioning and from the topic…
Q: QI: a) What are the main reasons behind using water vapor in thermal power plants? b) What is the…
A: As these 2 questions are different and we are suppose to solve only one question. Please post other…
Q: Determine the power consumption of a domestic refrigerator
A: Given: Refrigeration capacity (RC) = 1/8 TR Ambient temperature (TH) = 40oC= 313 K Require…
Q: 4. Which of the following formulas can be used to evaluate the thermal efficiency of a reversible…
A: 4
Q: Thermodynamics review that I cannot solve! Would appreciate some or all done out A heat engine…
A: Note: As per our guidelines we are supposed to answer only the first 3 sub-parts. Kindly repost…
Q: A heat pump supplied heat to a residential house having an average temperature of 32 °C. The heat…
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Q: (1) A reversed Carnot cycle is used for refrigeration and rejects 1,000 kW of heat at 340 K while…
A:
Q: What is the COP of an ideal heat-operated refrigeration cycle that receives the energizing heat from…
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Q: In an effort to conserve energy in a heat-engine cycle, somebody suggests incorporating a…
A: Given: In order to conserve energy in a heat engine cycle, incorporating a refrigerator that will…
Q: A Carnot cycle refrigerator operates between 250 K and 300 K. Its coefficient of performance is 1.…
A: Given, Highest temperature in cycle = T1 = 300 K Lowest temperature in cycle = T2 = 250 K For…
Q: What is the maximum possible theoretical efficiency of a heat engine operating with a hot reservoir…
A: Data given - TH = 2127°C = 2400 K TL = 27°C = 300 K
Q: The refrigeration capacity of the following vapor-compression refrigeration cycle is: Condenser…
A: Solution: Refrigeration capacity is the heat absorbed by the evaporator coils. Therefore, in this…
Q: An ideal refrigerator is operating between 37°C and – 13°C. The power required per ton of…
A: Given, Temperature of hot reservoir = TH = 37 oC = 310 K Temperature of cold reservoir = TL = -13 oC…
Q: A refrigeration system operates on the reversed carnot cycle. If the heat added and heat rejected in…
A: Given Data: The heat added to the system is, Qa=5000 kJ/min. The heat rejected from the system is,…
Q: Use Burghardt and Harbach Tables for reference in values Answer completely. A vapor-compression heat…
A: Given: The heating provided by heat pump, Q = 30000 Btu/hr = 8.792 kW The evaporator pressure, Pe =…
Q: Define the no refrigerator can have a higher COP than a reversible refrigerator operating between…
A: COP of an irrevesible refrigerator is given by:→(COP)Ref,IRREV=1QHQL-1While,COP of a…
Q: A food refrigerator is to provide a 15,000-kJ/h cooling effect while rejecting 22,000 kJ/h of heat.…
A: Given data: The cooling effect of the refrigerator, QL = 15000 kJ/h. Heat rejected from the…
Q: The efficiency of an ideal heat engine working between the freezing point and boiling point of water…
A: Here, the thermal efficiency of the ideal heat engine is to be found which is working between…
Q: Your colleague from a non-thermodynamics background, has asked you to explain to him/her how the…
A: The first law of thermodynamics deals with the quantitative conversion of heat into work. Whereas…
Q: A reversed Carnot cycle refrigerator maintains a temperature of -5°C. The ambient air temperature is…
A: Given:T1=35o C or 308 KT2=-5o C or 268 KQ2=2.5 kJ/s or 2500 W
Q: Describe a refrigerator that violates the Clausius statement of the second law
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Q: Q4. a) Why is the reversed Carnot cycle executed within the saturation dome not a realistic model…
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Q: A Carnot vapor refrigeration cycle operates between thermal reservoirs at 40 ⁰F and 100 ⁰F.…
A: Given data: TL=40°F=277.594 KTH=100°F=310.928 K Need to determine the coefficient of performance.
Q: You have a refrigerator in your garage. Does it perform differently in the summer than in the…
A: A fridge is simply not protected or made alright, to run in an exceptionally hot climate. When we…
Q: An ideal gas refrigeration cycle using air as the working medium is to maintain a refrigerated space…
A: Given data Lower temperature = 0°C Higher temperature = 80°C Find the coefficient of performace for…
Q: The following information is provided for a refrigerator operating on the a vapor-compression…
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Q: The objective of a refrigerator is to remove QL from the cooled space.
A: objective of refrigerator
Q: A refrigerator using Freon-12 operates between saturation temperatures of – 10°C and 60°C, at which…
A: 1-2→Isentropic compression process 2-3→Isobaric heat rejection process 3-4→Throttling process…
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- Why is two-stage compression popular for extra-low-temperature refrigeration systems?The operating condition for the single compressor in a household refrigerator is the lowest box temperature, which is typically A. 0F B. -20F C. 20F D. 40FA R-134a home refrigerator operates on a simple cycle at pressures 1.8 bar-abs and 7.5 bar-abs. The refrigerant mass flow-rate is 0.005 kg/s. Fill up Tables 3a and 36. Part 3. Calculation: Performance of a Simple Refrigeration Cycle. Table Ja. Selected Thermodynamic properties of R-134a refrigerant according to the given cycle. kJ/ kg a Specific Enthalpy at suction A Specific volume at suction m/ kg kJ /g-K e Specific entropy at suction d Specific enthalpy at discharge Specific enthalpy after expansion hs4 31 kJ/ kg kJ / kg Table 3b. Performance of the home refrigerator according to its cycle of operation. kWatt a. Evaporator cooling capacity b Condenser heat rejection rate Q Cond kWatt Power required by compressor W Comp C. kWatt d Volume displacement of compressor e. Coefficient of Performance-Ref VCamp Li/s COP Ref f Coefficient of Performance-Canot COP RC & Flash-gas formed after expansion X4 kg / kg %3D
- How to express the coefficient of performance of a standard refrigerator in terms of the enthalpies of the fluid ?The objective of a refrigerator is to remove QL from the cooled space.Choose correct answer: Refrigerators and heat pumps operate on the same cycle but differ in their objectives. Select one: True False
- Differentiate Refrigerator from Heat pumps in terms of: (a) Transfer of Heat, (b) Location of the evaporator, (c) Location of the condenser, and (d) Working of evaporator and condenser.True or false Heat is transferred to a system by either a cheap commercially available air-sourced heat pump with coefficient of performance of just 1.5, or an expensive 100% efficient electrical resistance heater. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is minimum when heat is added by the cheap commercial heat pump. Heat is transferred to a system by either a cheap commercially available air-sourced heat pump with coefficient of performance of just 1.5, or an expensive 100% efficient isothermal heat source. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is minimum when heat is added by the isothermal heat source.Your colleague from a non-thermodynamics background, has asked you to explain to him/her how the efficiency of a refrigeration cycle could be higher than unity and does not contradict the 2nd law of thermodynamics.