1. A refrigerated room is kept at -18C by a vapor- compression cycle with refrigerant. Heat...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. A refrigerated room is kept at -18°C by a vapor- compression cycle with refrigerant. Heat is rejected to cooling water that enters the condenser at 14°C at a rate of 0.35 Water 14 °C 22 °C R-134a as the 1.2 MPa QH 1.2 MPa 50 °C 5 °C subcool kg/s and leaves at 22°C. The refrigerant enters the condenser at 1.2MPA and 50°C and leaves Condenser at the same pressure subcooled by 5°C. If the compressor consumes determine 5.5 kW of power, Expansion valve Win Compressor (a) the mass flow rate of the refrigerant, (b) the refrigeration load and the COP, (c) the second-law efficiency of the refrigerator and the total exergy destruction in the cycle, and (d) the exergy destruction in the condenser. Take specific heat of water to be 4.18 kJ/kg-°C. Evaporator QL 1. A refrigerated room is kept at -18°C by a vapor- compression cycle with refrigerant. Heat is rejected to cooling water that enters the condenser at 14°C at a rate of 0.35 Water 14 °C 22 °C R-134a as the 1.2 MPa QH 1.2 MPa 50 °C 5 °C subcool kg/s and leaves at 22°C. The refrigerant enters the condenser at 1.2MPA and 50°C and leaves Condenser at the same pressure subcooled by 5°C. If the compressor consumes determine 5.5 kW of power, Expansion valve Win Compressor (a) the mass flow rate of the refrigerant, (b) the refrigeration load and the COP, (c) the second-law efficiency of the refrigerator and the total exergy destruction in the cycle, and (d) the exergy destruction in the condenser. Take specific heat of water to be 4.18 kJ/kg-°C. Evaporator QL
Expert Answer:
Related Book For
Thermodynamics for Engineers
ISBN: ?978-1133112860
1st edition
Authors: Kenneth A. Kroos, Merle C. Potter
Posted Date:
Students also viewed these mechanical engineering questions
-
An air conditioner using R134a as the refrigerant has a compressor exit temperature of 1608F and an exit pressure of 200 psia. The refrigerant enters the compressor at 20 psia and 0 SF. The condenser...
-
A. R-134a is used in an ideal vapor refrigeration cycle operating between saturation temperature 0f -20 C in the evaporator and 39.39 C in the condenser. Calculate the rate of refrigeration, the...
-
A heat pump cycle is executed with R134a under the saturation dome between the pressure limits of 1.8 and 0.2 MPa. The maximum coefficient of performance of this heat pump is (a) 1.1 (b) 3.6 (c) 5.0...
-
What is a derivative contract? Give an example. How are derivatives related to risk management?
-
The Infidelity Mutual Fund projects three possible outcomes for next year: weak performance (5 percent), good performance (10 percent), and outstanding performance (30 percent). The good performance...
-
What are the conditions for using a Kruskal-Wallis test?
-
The accounts of for the year ended March 31,2010, for Clark Industries, Inc. are listed next: Requirements 1. Prepare Clark Industries multi-step income statement. 2. Prepare Clark Industries...
-
1. Given the information available and your knowledge of different forecasting techniques, develop a recommendation for utilizing a specific forecasting technique in the subsequent study. The final...
-
The master budget at Western Company last period called for sales of 226,700 units at $10.70 each. The costs were estimated to be $3.92 variable per unit and $226,700 fixed. During the period, actual...
-
For the plane trusses supported by the spring at node 1 in Figure P3-33 (a) and (b), determine the nodal displacements and the stresses in each element. Let E = 210 GPa and A 5.0 10-4 m2 for both...
-
Search for at least 3 RFP examples in the IT arena to help you create your own RFP The websites suggested to conduct your research are https://www.grants.gov/web/grants/search-grants.htmlLinks to an...
-
The Regal Cycle Company manufactures three types of bicycles-a dirt bike, a mountain bike, and a racing bike. Data on sales and expenses for the past quarter follow: Sales Variable manufacturing and...
-
Lara, 3 6 , is single with no dependents and works as a high school librarian. In 2 0 2 3 , Lara incurred the following expenses:Medical expenses: $ 7 , 0 0 0 ( before the AGI floor ) Educator...
-
Delta Company produces a single product. The cost of producing and selling a single unit of this product at the company's normal activity level of 99,600 units per year is: Direct materials Direct...
-
The Gourmand Cooking School runs short cooking courses at its small campus. Management has identified two cost drivers it uses for budgeting purposes-the number of courses and the total number of...
-
Cullumber Inc. produces three separate products from a common process costing $100,100. Each of the products can be sold at the split-off point or can be processed further and then sold for a higher...
-
For each of the given periodic decimals, what rational number corresponds to that decimal? Complete parts (a) through (d). (a) 0.949494 0.94 corresponds to (Type an integer or a simplified fraction.)...
-
What are some of the various ways to implement an awareness program?
-
Calculate the mass fraction and mole fraction of each component and the gas constant of the mixture for each of the following mixtures: a) 2 lbm N2, 3 lbm O2, 5 lbm CO2 b) 3 lbmol CH4, 4 lbmol N2, 3...
-
Air with a velocity of 40 m/s enters an adiabatic turbine through a 4-cm-diameter pipe at 2 MPa and 400C and expands to the exit maintained at 100 kPa. Determine the power produced if a) The air...
-
One mole of water and one mole of CO2 are placed in a reactor at 3000 K and a total pressure of 400 kPa. The water dissociates into hydrogen and oxygen, and the carbon dioxide dissociates into carbon...
-
If the 3-in.-diameter short rod is made from brittle material having an ultimate strength of \(\sigma_{\text {ult }}=60 \mathrm{ksi}\), for both tension and compression, determine if the shaft fails...
-
If the 3-in.-diameter shaft is made from cast iron having tensile and compressive ultimate strengths of \(\left(\sigma_{\mathrm{ult}} ight)_{t}=40 \mathrm{ksi}\), and \(\left(\sigma_{\mathrm{ult}}...
-
The shaft consists of a solid segment \(A B\) and a hollow segment \(B C\), which are rigidly joined by the coupling at \(B\). If the shaft is made from A-36 steel, determine the maximum torque \(T\)...
Study smarter with the SolutionInn App