- A refrigerating machine that has the capability of producing a cooling effect of 3000 kcal per hour. What is the refrigerating load in tons of refrigeration? - The refrigerating capacity of R-12 system is 22 kW. Compressor power is 7.8 hp. Determine the COP of the refrigeration system.

- A refrigerating machine that has the capability of producing a cooling effect of 3000 kcal per hour. What is the refrigerating load in tons of refrigeration? - The refrigerating capacity of R-12 system is 22 kW. Compressor power is 7.8 hp. Determine the COP of the refrigeration system.

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

Chapter26: Applications Of Refrigeration Systems

Section: Chapter Questions

Problem 19RQ: Three advantages of unitary, stand-alone refrigeration modules in supermarket refrigeration are...

See similar textbooks

Related questions

Q: 1. Which engines can have their cylinders located below the crankshaft? Radial Engines In-Line Engin...

A: following are the answers to the above problems-

Q: 本 Pia A jct f water, haung a lrelocity of 3om/s im pinges on a series of ranes with a velocity of Is...

Q: Moist air at 35degree C and 100% relative humidity is entering a psychometric device and leaving at ...

Q: One kg of air is compressed in a cylinder for each of the quasi-equilibrium processes in the table b...

A: considering the given systems (a)constant volume processQ=ΔU+WW=0Q=ΔU=200 kjΔh=200 kjInternal energy...

Q: A rigid frictionless rod rotates anticlockwise in a vertical plane with angular velocity w. A bead o...

A: Write the formula for the Coriolis force. F→cor=-2mω→×u→0 Here, F→cor is the Coriolis force.

Q: e be const near the su

Q: 8. A rod 4 ft rotates in a horizontal plane about a vertical axis through its center. At each end of...

Q: stimate the total volumetric flow rate gas and the total mass emission rate of the particles in Fig ...

A: Given data: At section 1 and section 2, the measured velocities and particle flow rates are as follo...

Q: A material is subjected to two mutually perpendicular strains ex=350x10-6, ey=50x10-6 with unknown s...

Q: 2. Steam at a temperature of 300°C has a specific volume of 0.09765 m³/kg. Determine the pressure, s...

A: Given Temperature, T = 300oC Specific volume, v = 0.09765 m3/kg Find Pressure, P Specific in...

Q: 1. A small airplane flying horizontally with a speed of 150 miles/hr at an altitude of 400 feet abov...

Q: SOD-liter tank contains a saturated mixture of steam and water. at 300°C. Determine (a) the mass of ...

A: Given:T=300°C

Q: discuss the power train of a four-wheel tractor and power tillers. Discuss how power is transmitted ...

A: A transmission is a gearbox that reduces the speed of a vehicle. It can be described as a series of ...

Q: Please Answer everything 1. An ideal air-standard diesel cycle with inlet conditions: 21.11˚C and 1...

Q: Complete the following table for water. TC) p(kPa) h(kJ/kg) u(kJ/kg) x(%) v(m'kg) (a) 200 852.4 (b) ...

A: Answer: The complete table of water is given below:

Q: Determine the maximum torque of the tube shown if the allowable shearing stress is 46 Mpa. Given: t ...

A: GIVEN DATA- A HEXAGONAL TUBE IS GIVEN a=33mm t=2.73mm shear stress =46MPa WE HAVE TO FIND TORQUE

Q: 2 . Compute the REACTIONS in support A and B in KiloNewton. 12 Determine the diameter of support RB ...

Q: Object A of mass M has an original velocity of 6.50 m/s in the +x-direction toward a stationary obje...

Q: Thanks sir

A: Given data : The value of force =F The value of displacement=D Required : Work done

Q: Small packages traveling on the conveyor belt fall off into a 1-m-long loading car. If the conveyor ...

A: Velocity is the distance traveled per unit time. When a body falls freely it experiences an accelera...

Q: * The NAAQS for fine particles (PM25, annual average) is 12 µg/m?. Every time you breathe, you take ...

A: Given data Air contain 12 μg/m3 of fine particles Every breath takes in 1 litre = 10-3 m3 of air

Q: 1. Determine Z and V for steam (HzU) at 250 °C (523.15 K) and 1800 kPa by the following: PV a. The t...

A: Given, P = 1800 kPa T = 250oC = 523.15 K We know that, PV = RT V = RT/P = 0.287 * 523.15 / 1800 = 0....

Q: Steam enters a convergent-divergent nozzle at pressure of 22 bar and temperature of 300°C. the exit ...

A: From steam tables at pressure of 22 bar, saturation temperature is 217.24oC. As the temperature of s...

Q: A computer in a closed room of volume 200 m³ dissipates energy at a rate of 5 kW. The room has 500 k...

Q: Two kilograms of water is contained in a pis- ton/cylinder (Fig. P3.143) loaded with a linear spring...

Q: If the ratio of the diameter of the rivet hole to the pitch of rivets is 0.38, then the tearing effe...

A: Calculated the tearing efficiency of the joint.

Q: Second Law of Thermodynamics A heat pump is used for cooling in summer and heating in the winter. Th...

Q: Show the derivation of the girth and longitudinal stresses of the thin-walled cylindrical container...

Q: A heat engine cycle consists of a closed cycle subdivided into four legs with the heat transfer for ...

Q: PROBLEM 4: The basic barometer can be used to measure the height of a building. If the barometric re...

Q: rd frame and dr.

Q: The humidity ratio of the air?

A: Given; Air in a room is; T=380CRelative humdity=65%Pressure,p=0.2 MPaSaturation pressure,Tsat=350CP=...

Q: The type of charge possessed by an electron is:

A: Negative

Q: At 3MPa and 400C, 2 kg/s steam flows into a turbine. It exits at 300kPa. The turbine has an efficien...

Q: 1. A Carnot refrigeration cycle operates in a room in which the temperature is 20 °C. It is required...

Q: 1. 2 kg of air undergoes a power cycle undergoes a power cycle consisting of the following processes...

A: Dear student, we are suppose to solve only 3 sub parts. Please post other parts as a separate questi...

Q: A 2-m³ tank contains a saturated vapor at 40°C. Determine the pressure and mass in the tank if the s...

A: Given data: V=2 m3T=40°C Need to determine the pressure and mass in the tank.

Q: 1. Perform the indicated operation: a. 2{– 4 – [6 + 3 + (7 –(1 + 8)) + 12] – 3} + 5 b. –5{- [- 2 + 6...

Q: A 50-kN force is subjected to a lap joint fastened by three 20-mm diameter rivets. (a) the shearing ...

A: A rivet is a short cylindrical bar with inyregral to it.the cylindrical part of the rivet is called ...

Q: The following observations were recorded during a boiler trial of 1 hr duration. 700 kg of coal of c...

A: We've provided information from the question: ms=5250 kg/hr, p=12 bar,C.V.=30000 kJ/kg, x=0.94,Ts...

Q: Problem 3 Two pipes are connected by a manometer as shown in Fig. Determine the pressure difference,...

A: It is required to determine pressure difference between A and B

Q: The force-compression profile of a rubber bumper B is given by FB = Bx, where B = 3.5 x 10° lb/ft an...

Q: outlet and the flow Velocity to be constent. Find 6oo litre/secands with a relocity of flow 6m/s. Th...

A: Handwriting.jpg

Q: A solar energy based HE which recieves 60KJ of heat at 900C and rejects 50kJ of heat to the ambient ...

A: Given data, Q1= 60 kJ ,T1= 90°C Q2= 50 kJ ,T2= 30°C

Q: Determine the y-coordinate of the centroid of the shaded area shown. 16" Parabolic- 5" 7" Answer: y ...

Q: The heat engine below uses 20 g of Argon as the working substance. Argon is an inert monoatomic gas....

Q: 2. A rocket car moves along a straight track according to the equation x = 3t + t + 2, where x is in...

Q: 0,5 M r kj k3 ww 02 m2 CEVABI:

Q: A battery is well insulated while being charged by 12.3 V at a current of 6 A. Take the battery as a...

A: power = V * I = 12.3 * 6 = 73.8

Q: Calculate the change in the entropies of the system (AS,») and the surroundings (ASur), and the tota...

Concept explainers

Mechanical Drawings

A mechanical drawing is described as a technical drawing created by engineers following standard layout conventions, terminology, interpretation, and many other factors. It is also known as an engineering drawing.

Question

Hello, please help with this question for review purposes cuz my prof didn't teach us anything. Please provide charts and Table used with Plotting.

1. A refrigerating machine that has the capability of producing a cooling effect of 3000 kcal
per hour. What is the refrigerating load in tons of refrigeration?
2. The refrigerating capacity of R-12 system is 22 kW. Compressor power is 7.8 hp.
Determine the COP of the refrigeration system.

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 3

VIEW

Step by step

Solved in 3 steps with 3 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

Three advantages of unitary, stand-alone refrigeration modules in supermarket refrigeration are ______and _______.
A standard vapor-compression refrigeration system produces 20 tons of refrigeration using R 12 as a refrigerant while operating between a condenser temperature of 40°C and an evaporator temperature of -25°C. Determine the following: a. refrigerating effect in kilojoules per kilogram, b. the circulating rate of R 12 in kilograms per second, c. the power required, the COP, d. the heat rejected in kilowatts, and e. the volume flow rate of refrigerant at compressor inlet conditions. HA 40°C -25°C Entropy s Temperature T
9. The preservation of foodstuffs by refrigerating is an expensive process, butthe canning process is more expensive than refrigeration. Ills?
1. The heat absorption and rejection temperatures of a Carnot refrigeration cycle are -8°C and 36°C, respectively. The rate of heat absorption is 28 kW.A. Calculate the COP of the refrigeration cycle. B. Calculate the power input to the cycle in kW. C. If a Carnot heat pump operating between the same temperatures absorb 18 kW from the cold region, calculate the rate of heat supply to the hot region in kW. D. Calculate the COP of the heat pump.
give and explain an example of Application of refrigeration (Food Preservation and PHARMACEUTICALS is already given so other topic please)
A R22 refrigeration system is used to operate between 45degC and -30degC. The total cooling capacity is 350 kW. a. What is the ideal COP of the system? b. What is the heat rejected by the system? c. What is the total power consumed by the system? There are several steps made to improve the performance of the system. What happens to the COP, heat rejected and power consumed by the system when: d. For the same evaporator and condenser pressure, the temperature at the entrance of the compressor is -20degC, and the inlet to the expansion valve is subcooled by 5degC. Due to the wide temperature gap, it is decided to use a two-stage refrigeration system using flash gas removal and optimal intercooling operation in a flash chamber. What happens to the COP, heat rejected and power consumed by the system when: e. Having a low pressure and high-pressure compression. f. Two evaporators and two compressors, with the lower temperature evaporator having a cooling capacity of 225 kW. Notes: The…
A refrigeration system using refrigerant 22 is to have a refrigerating capacity of 80 kW. The evaporating temperaturc is -10°C and the condensing temperature is 42°C, determine the volume flow rate of refrigerant at inlet to the compressor. A. 35 L/s C. 25 L/s D. 55 L/s B. 45 L/s
2. In an air conditioning system, if the recirculated air is three times the outside air and the mass of supply air is zokg/s, what is the mass of the outside air? Ans. 5kg/s
Roughly how many tons of cooling does it take to cool a space where the following equipment is stored but no people? The equipment is running continuously: 3 refrigerators - capacity, 3000 Watts each; 10 Fluorescent lights - 64 Watts each; Two copy machines - 1000 Watts each a. 3.5 tons, b. 10 tons, c. 1 ton, d. 0 tons, there is no need to cool equipment.
6. An auditorium is to be maintained at a temperature of 26°C & 50% RH, Air is to be supplied at a temperature not lower than 15°C. The sensible heat gain is llokw and the latent heat gain is 37.5 kw, Take venti- lating air as 25% by weight of the air from the room, and is at 35°C & 60% RH. Determine the refrigeration capacity in TR
Number 3 The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that operates at an evaporator temperature of -17.5 ° C and a condenser temperature of 37.0 ° C. The refrigerant used is R-134a and the system operates in saturated conditions. a. COP= b.Refrigerant flow rate = Answer in kg / s. c. Heat loss rate in condenser = Answer kJ / s.
REFRIGERATION Calculate the power required by a system of one compressor serving two evaporators. One evaporator carries a load of 10 tons @ 10C and the other carries a load of 20 tons @ -10C. A back pressure valve reduces the pressure in the 10C evaporator to that of the -10C evaporator. The condensing temperature is 40 and the refrigerant is freon 22 What is the COP?