As a new engineer at CoolTech, you have been assigned to evaluate the performance of a cutting-edge refrigeration unit that usesR-134a as the working fluid. This unit operates on an ideal vapor compression cycle between 0.2 MPa and 0.9 MPa, and the massflow rate of the refrigerant is 0.08 kg/s. Your task is to analyze the cycle and determine the following key performance indicators:(a) Calculate the rate at which the refrigeration unit removes heat from the refrigerated space. (4 pts)(b) Determine the power input required for the compressor. (3 pts)(c) Evaluate the heat rejection rate in the condenser. (3 pts)Bonus (1 pts)Compute the Coefficient of Performance (COP).

Let's analyze this ideal vapor compression cycle for the refrigeration unit using R-134a as the…

Answered: As a new engineer at CoolTech, you have…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35°C at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. The compressor consumes 1.24 kW of power. Use data from the tables. 800 kPa x=0 Jo Expansion valve 19H Condenser Evaporator QL Compressor 800 kPa 35°C Determine the rate of heat absorption from the outside air. The rate of heat absorbed from the outside air is W₁ kW.
What are the four processes that make up the simple ideal vapor compression refrigeration (VCR) cycle? Make sure you mention what is physically happening during each process Themodynamics question. please explain briefly.Thank you
Numerical answers shall be in four (4) decimal places. Box your final answers
Can you also show the T-s and P-h diagrams? A Single Stage Vapor Compression (SSVC) refrigeration system has a cooling capacity of 6 tons. The discharge of the evaporator is at -20°C & 0.1 MPa and the discharge of the condenser is at 30°C & 1.0 MPa. Determine the following: (a) the COP of the system, (b) the Energy Efficiency Ratio in kJ/hr/W, (c) the HP/ton of the system, (d) the Refrigerating Efficiency of the system.
The ordinary household refrigerator is a good example of the application of this cycle. Evaporator Freezer compartment Capillary ube Kitchen air 25°C -18°C Condenser coils 3°C Comprosor HW: Q1: Refrigerant-134a is the working fluid in an ideal compression refrigeration cycle. The refrigerant leaves the evaporator -20°C and has a condenser pressure of 0.9 MPa. The mass flow rate is 3 kg/min. Find COP,, COPR. Camat for same Tmas and Tmin, and the tons of refrigeration. Q2: A simple VCRC using R-134a operates with a condensing temperature of 30°c and an evaporating temperature of -20°c .The system produces 50 kw of refrigeration. Determine the : a) Thermodynamic property values at the four main state points of the cycle, b) COP, c) Rate of refrigerant flow. Another measure of the effectiveness of the refrigeration cycle is how much input power to the compressor, in horsepower, is required for each Ton of cooling. The unit conversion is 4.715 hp per Ton of cooling To convert from COP to…
A vapor-compression refrigeration cycle with refrigerant-134a as the working fluid operates between pressure limits of 240 and 1600 kPa. The isentropic efficiency of the compressor is 78%. The refrigerant is superheated by 5.4 °C at the compressor inlet and subcooled by 5.9 °C at the exit of the condenser. Determine (a) the heat absorption in the evaporator, (b) the heat rejection in the condenser, (c) the work input, and (d) the COP. (e) Also determine all parameters if the cycle operated on the ideal vapor-compression refrigeration cycle between the same pressure limits.
In a vapor-compression refrigeration cycle, 9 kg/min of ammonia exits the evaporator as saturated vapor at-12°C. The refrigerant enters the condenser at 16 bar and 140C, and saturated liquid exits at 16 bar. There is no significant heat transfer between the compressor and its surroundings, and the refrigerant passes through the evaporator with a negligible change in pressure. Determine the refrigerating capacity, in kW. kW %3D Determine the power input to the compressor, in kW. kW %3D
Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator temperature is -30°C. Saturated vapor enters the condenser at 36°C, and saturated liquid exits at the same temperature. The mass flow rate of refrigerant is 10 kg/min. Determine the power input to the compressor, in kW, (A) 6.72 (B) 5.35 7.76 3.51 D
Complete work
A two-stage vapor compression refrigeration system similar to the system in Fig. 10.10 of the textbook employs R134a as the working fluid. The intermediate system pressure is 6 bar, and the condenser operates at 12 bar. The high- and low- pressure expansion valves receive saturated liquid at 12 and 6 bars of pressure respectively. The first stage compressor receives saturated vapor at 10℃. Assume that the refrigeration capacity is 10 tons, and the compressors operate isentropically. Find: the coefficient of performance. the compressor power input, in kW.
An ideal vapor-compression refrigeration cycle with refrigerant-134a as the working fluid operates between pressure limits of 40 and 300 psia. Determine (a) the heat absorptionin the evaporator, (b) the heat rejection in the condenser, (c) the work input, and (d) the COP.

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