2-A refrigerator removes heat from a refrigerated space at 5°C at a rate of 0.35 kJ/s and rejects it to an environment at 20°C. The minimum required power input is (a) 30 W (b) 33 W (c) 56 W (d) 124 W (e) 350 W

2-A refrigerator removes heat from a refrigerated space at 5°C at a rate of 0.35 kJ/s and rejects it to an environment at 20°C. The minimum required power input is (a) 30 W (b) 33 W (c) 56 W (d) 124 W (e) 350 W

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

Chapter45: Domestic Refrigerators And Freezers

Section: Chapter Questions

Problem 12RQ: Refrigerators currently being manufactured in the United States are using______as their refrigerant.

See similar textbooks

Related questions

Q: . List the two methods of recovering heat from a central air-conditioning system. Draw the block…

A: Given question: List the two methods of recovering heat from a central air-conditioning system. Draw…

Q: A simple beam AB supports five equally spaced loads P (see figure). Find the reactions at the…

A: The free-body diagram of the system is

Q: The open loop transfer function of a unity feedback system is given by G(s): (s+1)…

Q: 3. Steam at 140 bar and 400°C enters the high pressure turbine and expands to 3 bar. 5 400 kg/hr of…

A: Given that, Pressure of steam, P1=140 bar,Temperature of steam, T1=T3=400 °C,m˙=5400 kg/hr,Pressure…

Q: Boom OAB is supported by a ball and socket at point O and two cables AC and AD. Determine the forces…

A: To find Ox, Oy, Oz

Q: A room has to be maintained at 25 deg C at all times. Assuming the outside temperature of the room…

A: GivenT1=25oC=298KT2=-5oC=268KQ=42kW

Q: A technician measured the hardness of the steel bar two times. For the first time, he measured the…

A: (a) No, hardness will be changed in both the cases.

Q: Calculate the change in entropy of air, if it throttled from 5 bar, 27°C to 2 bar adiabatically.

Q: A car travels half the distance with constant velocity of 40 kmph and the remaining half with a…

A: As given in question, Velocity of the car in the first segment = v1 = 40 kmph Distance covered by…

Q: team at 140 bar and 400oC enters the high pressure turbine and expands to 3 bar. 5400 kg/hr of this…

Q: (a) What are the characteristics of the surface of a ductile fracture and a brittle fracture of a…

Q: The main of purpose of pumps is to transfer fluid from one point to another. If that's the only…

A: A pump is used to move fluids from one place to another. It just creates fluid flow; it does not…

Q: .) Calculate the cantilever support reactions at A b.) Calculate and draw the stress distribution…

A: The given beam is as shown below, Calculate the reaction at the support A, The angle θ…

Q: There are required 1902.3 kW of compressor power to handle air adiabatically from 1 atm, 26.7°C to…

A: Given data:

Q: M M1 k 2k M2 3k M3 X₁ X₂

A: INTRODUCTION : The degree of freedom indicates the number of coordinates that may be used to depict…

Q: Known : front view , side view Req: Draw the three projections

A: Given Projection To find Front Top Side

Q: The 10-kg block shown in Fig. 14-6a rests on the smooth incline. If the spring is originally…

Q: A company manufactures two products X and Y, which require the following resources. The resources…

Q: Consider (Figure 1). For a short period of time, the motor turns gear A with a constant angular…

A: Find the velocity of cylinder and distance travelled by the cylinder in three seconds.

Q: An automobile tire has a volume 988 in3 and contains air at a gauge pressure of 24.2 lb/in2 (psi)…

Q: An air at state point 1 (50°C dry bulb temperature and 25°C wet bulb temperature) experiences a…

A: Write the given data at point 1. Tb1=50 °CTw1=25 °C

Q: Determine the critical crack length (mm) for a through crack in a thick 2024-T6 alloy plate that has…

Q: 43. The exposure at 25 cm from a radioactive source is 16 mR/h. At what distance will the exposure…

A: Initial exposure rate =I1=16mR/h at D1=25cmNow,New Exposure rate=64mR/h=I2Let new distance =D2We…

Q: Figure below shows a siphon that is used to draw water from a tank. The siphon tube has an inside…

Q: What is the rate of rice husk consumption of a 2-ton grain dryer requiring to dry paddy from 22 to…

Q: Air flows through a nozzle. It enters at 20 bar and 1100°F and exits at 10 bar and 800°F. The inlet…

Q: A hollow shaft's inner diameter is half of its outer diameter D. Show that the maximum torque that…

Q: c. Find the homologous temperature (or the percent homologous) of Material A with a melting point of…

A: Given

Q: Q₁ / uniform string stretched between the points (0,0) and (0) is given the following intial…

Q: 13.30 A 10-kg block is attached to spring A and connected to spring B by a cord and pulley. The…

A: (a) The velocity of the block after it has moved down 50 mm is 0.597 m/s. (b) The maximum velocity…

Q: A spherical tank for storing gas under a pressure is 20 m in diameter and is made of steel 20 mm…

Q: A closed system containing 1 kg of air at 10 bar and 227°C expand adiabatically to a pressure of 1…

Q: The line of action of force vector F A to point B and has a magnitude action of force vector G…

Q: "Define specification" supposed to be a common activity under which design stage? Comparison…

A: Explanation: Design specification is common activity under concept design phase. During this…

Q: The rectangular plate is confined by rollers within slots at 4 and B. When 0 = 20°, point B is…

Q: Section 5-3: Dot Product For problems 1-2 determine the dot product, ā.b. 1. a = 97 -8k, b =(3,-2,1)…

A: as per guideline i have to solve only three subpart of your question

Q: The roller coaster car has a mass of 700 kg, including its passenger. If it starts from the top of…

Q: Consider (Figure 1). For a short period of time, the motor turns gear A with a constant angular…

A: Jskak

Q: 1. In the open-circuit steam plant, boiler feed water at atmospheric pressure 1 bar and 35°C is…

A: Given: Atmospheric condition→P1=1bar=100 KPa and→T1=35°C Because At 100 KPa, from the steam table:…

Q: If 500 g of a 40 wt % Ag-60 wt % Cu alloy is slowly cooled from 1000°C to just below 780°C (see Fig.…

A: Givenm=500gAg=40%

Q: Determine the maximum bending stress in the steel beam with the circular cross section.

A: Determine the maximum bending stress in the steel beam with the circularcross section.

Q: 2-66. Determine the placement d of the pin on the 1-m-diameter circular gate so that it is on the…

A: According to the details provided in the question, we need to calculate the resultant force on the…

Q: A two-bar system has the configuration shown in the Figure Q1 below. The cross-sectional area for…

Q: If rods of these materials are the same size, select the lightest metal rod. Titanium Carbon…

Q: H.W. 1- Repeat example 5.6 with Q₁ = 850 lit/min, Ah₁ = 40 m, N = 1450 rpm, and Power = 15 hp. 2-…

A: GivenQ1=850 ltr/minQ1=0.85060 m3/s∆h1=40mN=1450rpmP=15hp

Q: . Helium gas expands from 20 psia, 600ºR and 9 ft³ to 15 psia in a polytropic process with n =…

Q: The truck is moving along a 20 m span of beam. The front axle is 30 kN, the middle is 75 kN and the…

A: Draw the free-body diagram.

Q: ale or n. Determine the entropy production for this cycle in kJ/K-h (do not convert h to s). Enter…

A: 7.To find Entropy production for the cycle 8. How does cycle operates

Q: 3. Steam at 140 bar and 400°C enters the high pressure turbine and expands to 3 bar. 5 400 kg/hr of…

Q: Determine the maximum tensile and compressive bending stresses in the beam shown. Show: A.…

A: Answer: (a) The maximum tensile stress is 25 MPa. (b) The maximum compressive stress is 16.25 MPa.

Question

i need the answer quickly

2-A refrigerator removes heat from a refrigerated space
at 5°C at a rate of 0.35 kJ/s and rejects it to an
environment at 20°C. The minimum required power
input is
(a) 30 W (b) 33 W (c) 56 W (d) 124 W (e) 350 W

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Q3/ A refrigeration unit is cooling a space to −5°C by rejecting energy to the atmosphere at 20°C. It is desired to reduce the temperature in the refrigerated space to −25°C. Calculate the minimum percentage increase in work required, by assuming a Carnot refrigerator, for the same amount of energy removed.
A heat pump is absorbing heat from the cold outdoors at 5 degrees celsius and supplying heat to a house at 22 degrees celsius at a rate of 18,000kJ/h. If the power consumed by the heat pump is 2.5kW, the coefficient of performance of the heat pump is?
A 600-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency of 40 percent. Deter- mine the rate of heat transfer to the river water. Will the actual heat transfer rate be higher or lower than this value? Why?
A cycle heat engine does 50 kJ of work per cycle If the efficiency of the heat engine is 75% The heat rejected per cycle is....
A power plant is operating with a heat-source reservoir at 350°C and a heat-sink reservoir at 30°C. It has a thermal efficiency equal to 55% of the Carnot-engine thermal efficiency for the same temperatures. To what temperature must the heat-source reservoir be raised to increase the thermal efficiency of the plant to 35%?
A heat engine working with a thermal efficiency of 35% receives 2 kW of heat from a furnace. The waste heat rejected from the engine is
A domestic refrigerator maintains a temperature of –20 C. The ambient air temperature is 25 C. If heat leaks into the refrigerator at the continuous rate of 1 kJ/s, the least power required to pump this heat out from the refrigerator continuously is :
The drinking water needs of an office are met by cooling tap water in a refrigerated water fountain from 23 to 6°C at an average rate of 18 kg/h. If the COP of this refrigerator is 3.1, the required power input to this refrigerator is (a) 1100 W (b) 355 W (c) 195 W (d) 115 W (e) 35 W
a) A Carnot heat engine receives heat from a reservoir at 700 ° C at a rate of 600 kJ / min and rejects the waste heat to the ambient air at 25 ° C. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at - 6 ° C and transfers it to the same ambient air at 25 ° C. Determine (a) the maximum rate of heat removal from the refrigerated space and (b) the total rate of heat rejection to the ambient air.
An engineer, in his work on the heat engine, determined that the heat engine received 500 kJ of heat from a source at 700 K and converted 240 kJ to work and threw the rest into the heat well at 370 K. Do you think there are any errors in these calculations?
A completely reversible heat engine operates with a source at 1500 R and a sink at 500 R. At what rate must heat be supplied to this engine, in Btu/h, for it to produce 5 hp of power?
A heat pump is used to heat a house and maintain it at 24°C. On a winter day when the outdoor air temperature is –5°C, the house is estimated to lose heat at a rate of 80,000 kJ/h. Determine the minimum power required to operate this heat pump.