4.0 The capacity of the refrigerator (working on reversed Carnot cycle) is 280 tonnes when operating between – 10°C and 25°C. Determine : (a) Quantity of ice produced within 24 hours when water is supplied at 20°C. (b) Minimum power (in kW) required.

4.0 The capacity of the refrigerator (working on reversed Carnot cycle) is 280 tonnes when operating between – 10°C and 25°C. Determine : (a) Quantity of ice produced within 24 hours when water is supplied at 20°C. (b) Minimum power (in kW) required.

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: e velocity. Wh e v

Q: In a power plant, water (density = 1000 kg/m3) is pumped from 80 kPa to 3 MPa. The pump has an %3D i...

A: Given:P1=80 kPaP2=3 MPaisentropic efficiency, η=0.85

Q: the definition of actual air-fuel ratio?

A: To define what is ctual air-fuel ratio.

Q: X1(s) 2. Solve for the transfer function G, (s) = F(s) X2(s) G3(s) F(s)' X3(s) , G2(s) %3D F(s) r3(1...

Q: A flow can be described by the following equations. u =x cos y and v =-2x siny. Then flow is (A) Rot...

A: Given:u=x2 cosyv=-2x siny

Q: The compressive strength of aramid fiber is about one-eighth of its tensile stress. Estimate the sma...

Q: Explain the typical Printed Circuit Board (PCB) manufacturing process.

Q: I entered the machine shop and my H2S personal gas monitor started beeping and giving a reading on t...

A: Hydrogen Sulphide or H2S gas is a colorless gas According to Workplace Hazardous Materials Informat...

Q: A tennis ball is projected upward with a velocity of 120 m/s. Neglecting air resistance, how long wi...

Q: Knowing that, ignoring air resistance, an apple falling from a height h hits the ground when 2h If y...

A: Given Data

Q: of diameter 50mm, specific gravity 0.7

Q: How to find the diameter based on bending moment and formula, MR = EI?

A: GIVEN DATA - BENDING EQUATION GIVEN WE HAVE TO GIVE EXPRESSION HOW TO FIND DIAMETER

Q: QUESTION 1 Spring is an elastic body whose function is to store energy when deflected by force and r...

Q: Solve the problems below: (Use 4 decimal places for all your computations) 1. A water tank 3 m in di...

Q: Problem 2 Block A has a mass of 50 kg, and block B has a mass of 15 kg. They are stacked, connected ...

Q: which instrument has higher signal throughput

A: Need To determine which instrument has higher signal throughput.

Q: 1.14 The uniform 300-lb bar AB carries a 500-lb vertical force at A. The bar is supported by a pin a...

A: The situation of the cable is shown below. The angle is determined as follows. tanθ=4 ft3 ftθ=tan-1...

Q: figure pres

Q: A 6-splined shaft delivers a torque of 7.5 kN - m. The spline has the following dimensions: D = 75 m...

A: Write the given data. n=6T=7.5 kNmD=75 mmd=60 mmb=20 mmt=5 mmL=125 mm

Q: Discuss the two primary classes of thermodynamic cycles.

A: Concept: The two primary classes of thermodynamic cycles are, 1) Power cycles 2) Heat pump or refri...

Q: The vacuum in the condenser is 716 mm of Hg when the barometer reads 748 mm of Hg. In another case, ...

A: we will raise the barometric pressure to 760 mm without any change in absolute pressure in condenser

Q: The vacuum in a condenser is found to be 71.12 cm of Hg (barometer 76 cm of Hg) and the temperature ...

A: Here, From the steam table 1 kg of steam at 30oC will exert a pressure of 0.04242 bar and have a vol...

Q: a steel column that has a diameter of 50mm and 32m long is surrounded by an iron shell that is 5mm t...

Q: Collar A starts from rest and moves upward with a constant accelera- tion. Knowing that after 8 s th...

Q: n a Rankine cycle, the enthalpies at turbine entry and outlet are 3159 kJ/kg and 2187 kJ/kg. respect...

A: Given: The rankine cycle,h1=3159 kJ/kgh2=2187 kJ/kgpump work, wp=2 kJ/kg

Q: m according to

Q: The motion of a particle is given by the equation S = 2t^4 −t^3/6+ 2t^2 where S is in feet and t in ...

A: Given Data: Time t=2 second

Q: A box that contains of a 250 kg fragile instrument is transported by a truck that is subjected to a ...

Q: D Using the method of work and energy, determine the deflection at point D caused by the load P. L.

Q: The pressure ratio across a gas turbine (for air specific heat at constant pressure, c, = 1040 J/kgK...

A: Given data: Cp=1040 J/kg.Kγ=1.4r=10T1=1200 Kη=0.9 Need to determine the gas temperature at the exit ...

Q: Four forces 18 N, 36 N, 54 N and 72 N are acting along sides AB, BC, CD and DA of a rectangle ABCD o...

A: Given Data The force force acting on the side AB is: 18 N The force acting on the side BC is: 36 N ...

Q: 13-12. Figure P13.12 shows a mechanism that is used to shear thin-gauge sheet metal. If a 200-N forc...

A: Given DataF=200NHere the free body diagram

Q: (a) For each of the topics below, give ONE example demonstrates the application of mechanical scienc...

A: i) Static electricity is the result on an accumulation of electric charges that occurs when two non ...

Q: In orthogonal turning of low carbon steel pipe with principal cutting edge angle of 90°, the mair cu...

A: Given:Rake angle,α=0cutting force, Fc=1000 Nfeed force, Ft=800 Nshear angle,ϕ=25o

Q: A burner is used to increase the temperature of a substance from 10 °C to 50 °C with the thermal ene...

A: Write the given values with the suitable variables. T1=10 °C=283 KT2=50 °C=323 KQ=80 kJ=80×103 Jm=20...

Q: the cross-section through point D Determine the resultant nternal loadınigs in Fig. 2. Assume the re...

Q: n ideal air standard Otto cycle has a compression ratio of 8.5 If the ratio of the specific heats o...

A: Given:Specific heat ratio of air, γ=1.4compression ratio, r=8.5

Q: A car is moving with the initial velocity 15 m/s. Car stoped after 5s by application of breaks. Find...

A: Given data : Initial velocity=U Final velocity=V Time=t To find : Retardation

Q: Problem 2 A barge is pulled by two tugboats. If the resultant of the forces exerted by the tugboats ...

Q: *14. In Prob. 9 find the angle which the section ABCD makes with the lower base of the cube.

Q: 1. Knowing that the ultimate load for cable BD (diameter is 20 mm) is 110 kN and that a factor of sa...

Q: Given a 4" x 2" x 20" cylinder. The Relief Valve is set for 2,000 psi. We are using a 10 GPM pump. a...

A: Given: 4x2x20 inch P = 2000 psi To find: maximum force

Q: Two cars A and B are travelling in the same direction at SLEX. Car A is traveling at a constant velo...

Q: pivoted at e s is 88rpm DI

Q: e HCV w Ss. Calcu

Q: Specific enthalpy and velocity of steam at inlet and exit of a steam turbine, running under steady s...

A: Given:h1=3250 kJ/kgh2=2360 kJ/kgv1=180 m/sv2=5 m/sq=-5kW heat loss from turbine

Q: a 2.5 inch fire hose discharge a 1.25 inch jet. If the head lost in the nozzle is 6 ft, what gage pr...

Q: Gate Parting plane Cup Moulded part : Cup Dimensions : $1=40mm, 02=30mm, Height=30mm, Thickness=3mm ...

Q: 8' 5' A 9' X- C CF 4 3. 3 D

Q: The quarter ring shown has a mass m and was cut from a thin, uniform plate. Knowing that ri = 3/4 r^...

Concept explainers

Engineering Drawing

Technical drawing has been around since ancient times. As in the ancient Renaissance, complicated drawings were created, including Leonardo da Vinci's drawing. Modern engineering drawing, including its specific orthographic projection with scale conventions, began in Europe (France) during the early stages of Industrialization. L.T. C. Rolt also made some of Marc's drawings for its block-making machinery (in 1799) that also may have contributed significantly to British engineering technology. Since he learned the art of presenting three-dimensional(3D) items in a two-dimensional(2D) plane, as we now term mechanical drawing. 

Question

Show TS diagram

4.0 The capacity of the refrigerator (working on reversed Carnot cycle) is 280 tonnes when operating
between – 10°C and 25°C. Determine : (a) Quantity of ice produced within 24 hours when water is
supplied at 20°C. (b) Minimum power (in kW) required.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

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

2.1 (a) A refrigerator has working temperatures in the evaporator and condenser coils of –30 and 35°C respectively. What is the maximum possible COP of the refrigerator? (b) If the actual refrigerator has a refrigerating efficiency of 0.75, calculate the refrigerating effect in kW and TR per kW of power input.
4.0 The capacity of the refrigerator (working on reversed Carnot cycle) is 280 tonnes when operating between – 10°C and 25°C. Determine : (a) Quantity of ice produced within 24 hours when water is supplied at 20°C. (b) Minimum power (in kW) required.
A R-134a home refrigerator operates on a simple cycle at pressures 1.8 bar-abs and 7.5 bar-abs. The refrigerant mass flow-rate is 0.005 kg/s. Fill up Tables 3a and 36. Part 3. Calculation: Performance of a Simple Refrigeration Cycle. Table Ja. Selected Thermodynamic properties of R-134a refrigerant according to the given cycle. kJ/ kg a Specific Enthalpy at suction A Specific volume at suction m/ kg kJ /g-K e Specific entropy at suction d Specific enthalpy at discharge Specific enthalpy after expansion hs4 31 kJ/ kg kJ / kg Table 3b. Performance of the home refrigerator according to its cycle of operation. kWatt a. Evaporator cooling capacity b Condenser heat rejection rate Q Cond kWatt Power required by compressor W Comp C. kWatt d Volume displacement of compressor e. Coefficient of Performance-Ref VCamp Li/s COP Ref f Coefficient of Performance-Canot COP RC & Flash-gas formed after expansion X4 kg / kg %3D
The capacity of the refrigerator( working on reversed carnot cycle) is 280 tonnes when operating between -10C and 25 C. Determine (A. Quantitiy of ice prodeuced within 24 hours when water is supplied 20C), (B. minimum power KW) Show Ts diagram, show all units.
Comment on the importnace of quickly returning the milk carton to the refrigerator for an energy conservation point of view.
1.) A Carnot engine is coupled to a Carnot refrigerator so that all the work produced by the engine is used by the refrigerator in extraction of heat from a heat reservoir at 270K at the rate of 4 kJ/s. The source of energy for the Carnot engine is a heat reservoir at 500K. If both devise discard heat to the surrounding at 300K, a. How much heat does the engine absorb from the 500K reservoir? b. If the actual efficiency of the engine is n= ncamot/1.5 and the COP = COPCame/ 1.5, how much heat does the engine absorb from the 500K reservoir?
4.46. An ideal Solvay refrigerator utilizing nitrogen as the working fluid operates between 0.101 and 2.02 MPa with the compression handled isothermally at 300 K. The maximum tem- perature in the cold space is 190 K. If the work obtained from the expansion process is used to reduce the work of compression, determine the net work per unit mass compressed, the refrigeration effect per unit mass compressed, and the figure of merit for the refrigeration system. To simplify the calculations, it may be assumed that the mass of gas present in the regenerator during the expansion process is negligible compared to the mass of gas in the expansion volume.
A thermodynamic cycle receives 150 J of heat from a cold reservoir and rejects 165 J of heat to a hot reservoir. What is its coefficient of performance as a refrigeration cycle, (B) ?
Q.1: A standard vapor-compression cycle developing 50 kW of refrigeration using refrigerant 22 operates with a condensing temperature of 35° C and an evaporating temperature of -10° C. Calculate (a) the refrigerating effect in kilojoules per kilogram, (b) the circulation rate of refrigerant in kilograms per second, (e) the power required by the compressor in kilowatts, (d) the coefficient of performance, (e) the volume flow rate measured at the compressor suction, (f) the power per kilowatt of refrigeration, and (g) the compressor discharge temperature.
Choose the correct answer: 1. In a closed or dense air refrigeration cycle, the operating pressure ratio can be reduced, which results in............ coefficient of performance. (a) lower (b) higher 2- The efficiency of Carnot heat engine is 80%. The C.O.P. of a refrigerator operating on the reversed Carnot cycle is equal to (a) 0.25 9- (b) 0.40 (c) 0.60 (d) 0.80 3. In a refrigerating machine, if the lower temperature is fixed, then the C.O.P. of the machine can be increased by (a) increasing the higher temperature (c) operating the machine at a lower speed (b) decreasing the higher temperature (d) operating the machine at a higher speed 4. The highest temperature during the cycle, in a vapour compression refrigeration system, occurs after (a) compression (b) condensation (c) expansion (d) evaporation 5- A system with multiple evaporators at different temperatures with compound compression will (a) increase the power requirements (b) reduce the power requirements (c) neither increase…
The objective of a refrigerator is to remove QL from the cooled space.
5. The temperature in a refrigerator coil is 267 K and that in the condenser coil is 295 K. Assuming that the machine operates on the reversed Carnot cycle, calculate : (i) C.O.P. (ii) The refrigerating effect per kW of input work. (iii) The heat rejected to the condenser. [Ans. (i) 9.54 (ii) 9.54 kW (iii) 10.54 kW]