Determine heat rejection rate to the surrounding

Assignment Help Mechanical Engineering
Reference no: EM13719974

R-134a enters the condenser of a refrigerator at 800kPa and 50oC at a rate of 0.018kg/s and leaves at 800kPa as a saturated liquid. It is known that the compressor consumes 1.2kW of electricity at this operating condition. Determine 1) heat rejection rate to the surrounding; 2) cooling rate; and 3) the COP of the refrigerator.

Reference no: EM13719974

Questions Cloud

Determine the cut-off ratio and engine efficiency : According to data provided by Motor Trend, the 2011 Chevrolet Silverado Diesel HD is powered by an 8 cylinder diesel engine having a total displacement of 6599 cc (6.599 L). The compression ratio is 16:1, and the total power output is 397 hp (296.0 k..
A torsional helical spring is used to hold a door closed : A torsional helical spring is used to hold a door closed.  The handle on the door is located 30 inches from the center of the torsional helical spring.  The pull on the handle should be 1 pound when the door is closed and 3 pounds after the door has ..
What are the temperature on the left edge of the wall : A one dimensional wall of material (Kw=10w/mk) is 50 mm thick with uniform heat generation q‘‘‘=5*10^6w/m^3. The left side is exposed to a fluid hl=500w/m^2k at 20 degree Celsius. The right side has a 10mm thick plate attached that has no heat genera..
Heat rejection rate to the surrounding : The thermal efficiency of a heat engine is 40% and produces 100kW. Please determine the heat transfer rate to this engine and heat rejection rate to the surrounding.
Determine heat rejection rate to the surrounding : R-134a enters the condenser of a refrigerator at 800kPa and 50oC at a rate of 0.018kg/s and leaves at 800kPa as a saturated liquid. It is known that the compressor consumes 1.2kW of electricity at this operating condition. Determine 1) heat rejection..
What is its cop and the electricity it consumes : An air conditioner can produce a 120 kJ/min cooling effect while rejecting 2.5kW of heat. What is its COP and the electricity it consumes? An inventor claims to have designed a system which can produce the same cooling rate but consumes only 0.05kW e..
Determine the heat supplied to the heat engine : A reversible heat engine receives heat from a heat source at 1000oC and has a thermal efficiency of 45%. The heat engine does maximum work equal to 600kJ. Determine the heat supplied to the heat engine, heat rejected to the heat sink, and the tempera..
What is the isentropic efficiency : H2O is used by a turbine operating at steady state with a mass flow rate of 4 lbm/s. The water at the inlet is 140 PSI and 1000oF and at the outlet it is 2 psi. Knowing the power developed   is 1,600 Btu/s, what is the isentropic efficiency?
Give brief explanation of respiratory hazards : Choose two of the five Respiratory Hazards. Provide a brief explanation of each hazard and describe a situation in which you may encounter them. What effects would each of these hazards have on your body

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  What are the higher and the lower heating values of a fuel

what are the higher and the lower heating values of a fuel? how do they differ? how is the heating value of a fuel

  Refrigerant 134a enters an insulated throttling valve at

refrigerant 134a enters an insulated throttling valve at 140 lbfin2 and 80degf. the refrigerant exits the valve at 50

  Consider one kmol of methane at a pressure of 232 bar and a

consider one kmol of methane at a pressure of 23.2 bar and a temperature of 200 k.a is this methane an ideal gas? show

  The partition is now removed and the water expands to fill

a rigid tank is divided into two equal parts by a partition. one part of the tank contains 5.2kg of compressed liquid

  Professional engineers code of ethics promote safety

How does the National Society of Professional Engineers Code of Ethics promote safety, health and welfare to the public? (2 - 3 paragraphs)

  A 4-ft concrete post is reinforced with four steel bars

a 4-ft concrete post is reinforced with four steel bars each with a 34 in. diameter. knowing that e of steel 29x106 psi

  Steam flows through an expansion valve conditions at the

steam flows through an expansion valve. conditions at the inlet are p1700 kpa and x10.96. the exit pressure p2 is 350

  Determine the minimum stopping distance for the automobile

an automobile of weight w that has a wheel base of lenght l during fourwheel braking. the center of gravity is a

  With a proper sequence of thermal processing

With a proper sequence of thermal processing, aluminum alloyed with 4% copper can be caused to contain a large number of very small particles of the hard intermetallic compound CuAl2. How would you expect the yield strength of such processed alloy to..

  The tubes have center to center distance of 15 inches in

an in-line tube bank is constructed of 1 inch diameter tubes with 15 rows transverse to the flow 7 rows in the floe

  How does the total free energy for transformation gtotal

how does the total free energy for transformation ?gtotal vary for a liquid-solid transformation versus that for a

  Entropy explained the temperature reaches

Entropy explained in this solution, Liquid H2O at 8 MPa and 40 degrees C is heated reversibly at constant pressure until the temperature reaches 600 degrees C

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd