A reversible refrigeration cycle operates between cold and hot reservoirs at temperatures Tc and TH, respectively.(a) If the coefficient of performance is 10 and Tc = -40°F, determine TH, in °F.(b) If Tc = 0°C and TH = 30°C, determine the coefficient of performance.(c) If Qc = 500 Btu, QH=600 Btu, and Tc = 20°F, determine TH, in °F.(d) If Tc = 50°F and TH = 100°F, determine the coefficient of performance.(e) If the coefficient of performance is 5.5 and Tc = -5°C, find TH, in °C.Part AIf the coefficient of performance is 10 and Tc = -40°F, determine TH, in °F.TH= iSave for Later°FAttempts: 0 of 4 used Submit Answer

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Answered: A reversible refrigeration cycle…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Ans. W12 = -1000KJ Q12 = ~-3845 KJ Q23 = ~ 667.8 KJ
02: A turbine operating under steady flow conditions receives steam at the following state: pressure 13.8 bar : specific volume 0.143 m'kg : internal energy 2590 kJ/kg: velocity 30 m/s. The state of the steam leaving the turbine is : pressure 0.35 bar, specific volume 4.37 m'kg; intermal energy 2360 kJ/kg: velocity 90 m/s. Heat is lost to the surroundings at the rate of 0.25 kJ/s. If the rate of steam flow is 0.38 kg/s, what is the power developed by the turbine?
Assume 2.3 lb/sec of fluid enter a steady-state, steady-flow system with Pi = 105.57 psia, p1 = 0.307 lb/ft^3, v1 = 96.19 fps, u1 = 794.13 BTU/lb, and leave with P2 = 12.97 psia, p2 = 0.13 lb/ft^3, v2 = 431.41 fps, and u2 = 759.71 BTU/lb. During the passage through the open system, each pound rejects 13.2 BTU of heat. Determine the work in hp.
Answer it correctly.
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A heat pump is used to maintain the interior of a building at 21 °C. At steady state, the heat pump receives energy by heat transfer from well water at 9°C and discharges energy by heat transfer to the building at a rate of 120000 kJ/h. Over a period of 14 days, an electric meter records that 1490 kW-h of electricity is provided to the heat pump. 1. Draw a schematic diagram(s)
The thermal efficiency of a reversible power cycle operating between hot and cold reservoirs is 60%. Evaluate the coefficient of performance of: (a) a reversible refrigeration cycle operating between the same two reservoirs. (b) a reversible heat pump cycle operating between the same two reservoirs. Part A Evaluate the coefficient of performance of a reversible refrigeration cycle operating between the same two reservoirs. B = i Save for Later Part R Attempts: 0 of 4 used Submit Answer
Thermodynamics: Please show me how to solve the given practice problems in step by step solution.
A refrigeration machine rejects QH = 620 Btu per cycle to a hot reservoir at TH = 540°R, while receiving Qc = 447.0 Btu per cycle from a cold reservoir at temperature Tc. The machine operates at 10 cycles per minute. Determine the net power input, in hp, the minimum theoretical temperature Tc, in °R, and the maximum coefficient of performance of the cycle. Step 1 Determine the net power input, in hp. W. i hp cycle =
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A reversible refrigeration cycle operates between cold and hot reservoirs at temperatures Tc and TH, respectively. (a) If the coefficient of performance is 10 and Tc- -40°F, determine TH, in °F. (b) If Tc- -30°C and TH -30°C, determine the coefficient of performance. (c) If Qc - 500 Btu, QH-600 Btu, and Tc -20°F, determine TH, in °F. (d) If Tc-30°F and TH-100°F, determine the coefficient of performance. (e) If the coefficient of performance is 8.9 and Te--5°C, find TH, in °C.
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