1. An engine operating on the air standard heat engine has 13 KJ heat added at isochoric process, heat ratio of air = 1.35. If the minimum pressure and temperature are 101 KPa and 305 K, respectively. The maximum volume of 3.8 x 10 2 m³ with clearance of 10%. Determine • The work of cycle in KJ • The mep in MPa

1. An engine operating on the air standard heat engine has 13 KJ heat added at isochoric process, heat ratio of air = 1.35. If the minimum pressure and temperature are 101 KPa and 305 K, respectively. The maximum volume of 3.8 x 10 2 m³ with clearance of 10%. Determine • The work of cycle in KJ • The mep in MPa

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter35: Comfort And Psychrometrics

Section: Chapter Questions

Problem 12RQ: A gas furnace has an output of 60,000 Btu/h. The return air temperature is 72F, and the temperature...

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1. An engine operating on the air standard heat engine has 13 KJ heat added at isochoric process, heat ratio of air = 1.35. If the minimum pressure and temperature are 101 KPa and 305 K, respectively. The maximum volume of 3.8 x 10 2 m³ with clearance of 10%. Determine • The work of cycle in KJ • The mep in MPa
An engine operating on the air standard heat engine has 13 KJ heat added at isochoric process, heat ratio of air = 1.35. If the minimum pressure and temperature are 101 KPa and 305 K, respectively. The maximum volume of 3.8x 10 -2 m3 with clearance of 10%. Determine: The work of cycle in KJ The mep in MPa
The refrigeration system of a food production firm is run using the Reversed Carnot Cycle. The temperature of the hot refrigerant supply in the system should be 52°C, while the temperature of the sink should be -14°C. Its capacity is projected to be at least 24 tons. It's important not to disregard losses. Find and Show unit analysis and conversion: a. COP and COP of Heat Pump b. Heat rejected from the system in kW c. Network in, Hp and Energy Efficiency Ratio
1.5 Develop an expression for the thermal efficiency of the air-standard diesel cycle as a function of the compression ratio r. = V1N2 and the expansion ratio re = V4 / V3. Assume the working fluid is an ideal gas, and the volume effect of moles of gas %3D generated is small relative to the effect of heating from combustion.
5. An engine trom a quary vehicle used in the Buid a Beach program of DEMR has a power requirement of 560 kw. Per hour of its operation. it ejects 234 MJ into its suroundings at 50 °C. If it behaves like a Carnot engine, answer the questions below. a. How much work (MJ) s done by the engine per hour? b. What is the efficiency (%) of the engine? c. What is the temperature ("C) of the hot reservoir?
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1. In a steam power cycle, steam enters the turbine at 30bar with the following different conditions and leaves at 1bar. Calculate Carnot efficiency, Rankine efficiency, condenser heat flow in kW assuming mass flow rate of steam as 9.5kg/s and steam rate for each case considering the pump work. Using mollier diagram (ii)Wet with 0.95 dryness
3. The working substance for a Carnot cycle is 8 Ib, of air. The volume at the beginning of isothermal expansion is 9 ftand the pressure is 300 psia. The ratio of expansion during the addition of heat is 2 and the temperature of the cold body is 90 °F. Find: a) Q, and Qr (BTU), b) V, and Ps, c) V, and P4, d) mean effective pressure (psia).
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Thermodynamics (Carnot Cycle) An Ocean Thermal Energy Conversion (OTEC) power plant produces 25000 kW of ouput using warm surface water temperature of 29°C and a cold deep-water temperature of 12°C. Assume it is a carnot cycle and density of cold water to be 1000 kg/m3. Calculate the heat rejected in kW. Options: a. 920000 b. 720000 c. 120000 d. 420000 e. 820000 f. 320000 g. 520000 h. 220000 i. 620000