5-Consider a heat pump that operates on the ideal vapor compression refrigeration cycle with R-134a as the working fluid between the pressure limits of 0.32 MPa and 1.2 MPa. The coefficient of performance of this heat pump is (a) 0.17 (b) 1.2 (c) 3.1 (d) 4.9 (e) 5.9
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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 vapor compression refrigeration cycle operates at steady flow conditions with 0.25kg/s or R-134a. The table below shows some of the operating parameters andproperties for the refrigerant. The compressor is refrigerated, and the condenser is alsocooled with water. The compressor receives shaft power equivalent to 7.5 hp.Neglecting changes in kinetic and potential energy changes and any heat loss betweendevices, please answer the following.a. Complete the table below and sketch the cycle processes on a T-s diagram.When completing the table please use the same number of decimal places as inthe tables.b. Determine the cooling capacity of the refrigeration unit, in Tons (1 refrigerationTon = 211 kJ/min).c. Compute the COP.d. Determine the volume flow rate of refrigerant entering the condenser in L/min.e. Determine the mass flow rate of cooling water passing through the condenser.f. Determine the heat transfer rate from the compressor.g. Compute the rate of entropy generation in the…
- A vapor compression refrigeration cycle operates at steady flow conditions with 0.25kg/s or R-134a. The table below shows some of the operating parameters andproperties for the refrigerant. The compressor is refrigerated, and the condenser is alsocooled with water. The compressor receives shaft power equivalent to 7.5 hp.Neglecting changes in kinetic and potential energy changes and any heat loss betweendevices, please answer the following. I understand how to fill the values but I get lost after that, need some help.2. An ideal refrigeration cycle that has a condenser temperature of 45°C and an evaporator temperature of -15°C. Determine the COP of this refrigerator for the working fluid R-134a. Equations: Efficiency of a turbine: Нааctual — H, W,(actual) W,(isentropic) H2isentropic – H1 2,ac Efficiency of a compressor: W,(isentropic) H2.isentropic – H1 W,(actual) Нааctual — H Rankine cycle efficiency: Wnet |Wturbine] – |Wpump| dund QH Qboiler COP of a refrigerator: Q¿(heat absorbed from cold space) || Wc(work input to the compressor)Fill in the blanks: A refrigeration system operates on an ideal vapor compression using R-134a with an evaporator temperature of -30°C and a condenser exit temperature of 46°C and requires a 74.6 kW motor to drive the compressor. What is the capacity of the refrigerator in TOR? Use the properties of R-134a from refrigerants' table. ToR
- 1. A refrigeration system operates on an ideal vapor compression using R-12 with an evaporator temperature of -30°C and condenser exit temperature of 49 30 °C and requires 74.6 kW motor to drive the compressor. What is the capacity of the refrigerator in tons of refrigeration? Enthalpy at condenser entrance = 382 kJ/kg, exit = 248.15 kJ/kg, at evaporator entrance 248.15 KJ/kg, exit = 338.14 kJ/kg.Consider a refrigrator that operates on the vapor compression refrigeration cycle with R-134a as the working fluid. The refrigerant enters the compressor as saturated vapor at 100 kPa, and exits at 1000 kPa and 80°C, and leaves the condenser as saturated liquid at 1000 kPa. The coefficient of performance of this refrigrator is Lütfen birini seçin: a. 1.21 b. 1.87 c. 2.85 d. 1.59 e. 2.34A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a. The table below shows some of the operating parameters and properties for the refrigerant. The compressor is refrigerated, and the condenser is also cooled with water. The compressor receives shaft power equivalent to 7.5 hp. Neglecting changes in kinetic and potential energy changes and any heat loss between devices, please answer the following. a. Complete the table below and sketch the cycle processes on a T-s diagram. When completing the table please use the same number of decimal places as in the tables. 123456 b. Determine the cooling capacity of the refrigeration unit, in Tons (1 refrigeration Ton = 211 kJ/min). c. Compute the COP. d. Determine the volume flow rate of refrigerant entering the condenser in L/min. e. Determine the mass flow rate of cooling water passing through the condenser. f. Determine the heat transfer rate from the compressor. g. Compute the rate of entropy…
- A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a. The table below shows some of the operating parameters and properties for the refrigerant. The compressor is réfrigerated, and the condenser is also cooled with water. The compressor receives shaft power equivalent to 7.5 hp. Neglecting changes in kinetic and potential energy changes and any heat loss between devices, please answer the following. a. Complete the table below and sketch the cycle processes on a T-s diagram. When completing the table please use the same number of decimal places as in the tables. b. 123456 Determine the cooling capacity of the refrigeration unit, in Tons (1 refrigeration Ton=211 kJ/min). c. Compute the COP d. Determine the volume flow rate of refrigerant entering the condenser in L/min. e. Determine the mass flow rate of cooling water passing through the condenser. 1. Determine the heat transfer rate from the compressor. g. Compute the rate of entropy…Detemine the COP of a heat pump when it is working between 1000 K and 100 C.please answers fasterrr An ice-making machine in Restoran Syed operates on the vapor-compression refrigeration cycle. Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.13MPa and a °C at a rate of 0.13kg/s, and it leaves at 0.7 MPa and b °C. The refrigerantis cooled in the condenser to c°C and dMPa, and it is throttled to 0.14MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, show the cycle on a T-s diagram with respect to saturation lines, and determine;i.the rate of heat removal from the refrigerated space,ii.the power input to the compressor, iii.the isentropic efficiency of the compressor, and iv.the COP of the refrigerator.v.if the compressor has no irreversibility, how about the COP?vi.Justify the difference between ideal and actual cycles. a= -8 b= 49 c= 25 d= 670