Answered: Calculate the mass of the refrigerant…

Engineering

Mechanical Engineering

Calculate the mass of the refrigerant in kg/s.

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 13RQ: Condensers in these refrigerators are all_______cooled.

See similar textbooks

Related questions

Q: Draw the Shear and Moment Diagram for the given loadings

A: Uniformly varying load- In uniformly varying load, total load acting will be area of the triangle.…

Q: a. Determine the composition of each phase in a Cu-40% Ni alloy at 1300°C, 1270°C, 1250°C, and…

A: a. Determine the composition of each phase in a Cu-40% Ni alloy at 1300°C, 1270°C, 1250°C, and…

Q: 25° L=200m Problem 1: A car having a mass of 1000 kg accelerates from 20 km/h to 80 km/h on a steep…

A: Given:Mass of the car, m=1000 kgInitial velocity, v1=20 km/hFinal velocity, v2=80 km/hDistance…

Q: A helical compression spring is to be made of oil-tempered wire of 4-mm diameter with a index of C 5…

A: Disclaimer: “Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: The pressure outside the droplet of water of diameter 0.04 mm is 103.2 kPa (atmospheric pressure).…

Q: 8) What is the maximum deflection of the cantilever beam? Leave the answer in terms of "EI" 3kN/m 5m…

A: Given:Length of the catilever beam, L=5 muniformly distributed load, w=3 kN/mPoint Load, P=10 kN

Q: The diffusion coefficients for species A in metal B are given at two temperatures: D (m²/s) 7.81 x…

Q: A man of mass 75kg stands on a weighing machine in a lift. Determine the reading on the weighing…

A: Given data as per questionMass of man, m=75 kglift moves downwards at a constant velocity, v=1.5m/s

Q: Carbon dioxide (CO₂) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 40…

Q: Determine the stretch in spring AC for equilibrium of the 1.2 kg block. The springs are shown in the…

Q: A thermistor shows a large change in resistance for a small temperature change. Suppose one…

Q: The mechanism shown is used to lower disabled persons into a whirlpool tub for therapeutic…

Q: Figure F= Value Submit Request Answer Units A < Return to Assignment Provide Feedback 4 m 30°…

A: Given data Force = 680 (N) Find the magnitude of projection of force F along axis u.

Q: Question The condition of air in a restaurant kitchen is defined based on the Tab of 23°C and…

Q: A circular pipe 54 meters long tapers from 3 m to 2 m in diameter. What is the velocity per meter…

A: Given Diameter at bigger section, d1 = 3 m d2 = 2 m…

Q: Determine the mass of each of the two identical cylinders if they cause a sag of s = 0.36 m when…

A: s=0.36m To find mass of cylinder

Q: The water enters the system at A as shown in Figure Q2. Determine the average velocity of the water…

Q: B- What is the main object of the following: 1. tail of the airplane? 2. Wings? 3. Undercarriage?

A: The aero plane is made up of the several components. Some of them are tail of the aero plane, wings…

Q: if air is at pressure of 2200 lb/ft^3, and at a temperature of 800°R, what is the specific volume

Q: tivity 2 -2 m 2.5 kN 1.5 kN 3 kN 4 m F Fy, کالا 2 m- Determine the components of each of the forces…

A: a) Find the components of each force b) moment about A c) equivalent force and location .

Q: 7- Listed in the tables are five springs described in SI units. Investigate these squared-…

Q: 1.2 L car engine has four individual cylinders, each one of which holds 0.3 L of fuel + air gas…

Q: The collar C is fixed to rod AB using a glued bond that allows a maximum force of 405 N parallel to…

A: Given Data: The maximum force allowed is:Fmax=405 N Now from the figure write the position of…

Q: nder ideal conditions, if the inlet velocity is zero, the velocity of steam in m/s at the outlet…

A: Given:Initial velocity, Vi=0Enthalpy drop, ∆h=427 kJ/kg

Q: The mass shown in figure 2 rolls freely on a level track. F cos(ot) k₂ €2 Figure 2. m The force F…

A: Given: To find: Position at t

Q: Show the tolerance zone created by each of the given tolerance specifications. Superimpose the…

A: We have to show the tolerance zone created by each of the given tolerance specification. And,…

Q: An insulated steam pipe located where the ambient temperature is 32°C, has an inside diameter of 50…

A: Given Temperature, T1 = 150oC T2 = 32oC Radius, r1 = 25 mm…

Q: The horizontal tube is 1 m long and 10 cm in diameter and is filled with a sample material. During a…

A: Given data: Length of sample = Length of horizontal tube = L = 1 m Diameter of sample = D = 10 cm =…

Q: 5. Draw the shear and moment diagrams for the loaded beam. After you have the diagrams, answer the…

Q: Name some products that can be manufactured by shape rolling and thread rolling

Q: Problem 8. From Nagoya, Japan to Los Angeles California, USA have a total distance of 7,653.8 nm and…

A: Q 8. Given data d=7653.8 nmv=15.25 knots=7.93 m/sec Here, d is the distance and v is the speed of…

Q: Calculate the DOF for the mechanisms below: (2) 0₂ 0₂ 0₁ 0₁ 06 06 9 X

Q: Water exits a pipe vertically as a free jet with initial diameter d = 1.0 cm and initial (unknown)…

A: Givend=1cm=0.01mD=10cm=0.10mh1=20cm=0.20mh2=0.4mm=0.4×10-3 m

Q: Question 6 I Draw Force Flow Diagram for the following pe Tip Barrel

Q: Q4: Assuming f-0.020, determine the discharge in the pipes. Neglect minor losses. Pipe Diameter AB…

Q: The materials for the members being joined in Probs. 9-1 to 9-4 are specified below, What 9-12 load…

Q: Draw the shear and moment diagram for the given beam, w1-16 kN/m w2=48 kN/m P1=50 kN L=6m Answer the…

Q: . Air at 24°C db & 15°C wb enters a dehumi fier and leaves at 41°C db & 19°C wb, How much moisture…

A: Given data: Tdb1=24°CTwb1=15°CTdb2=41°CTwb2=19°C Need to determine the moisture has been removed per…

Q: HVAC UPVOTE WILL BE GIVEN. ANSWERS ARE GIVEN ALREADY. PLEASE WRITE THE COMPLETE SOLUTIONS. A room…

A: Givenmoist air dry bulb temperature of 25°Cwet bulb tempe rature of 21°C

Q: The smooth surface of the vertical cam is defined in part by the curver (0.2 cos 0+0.3) m. (Figure…

A: Given Dataθ˙=4 rad/sr=0.2cosθ+0.3k=30N/mm=0.9kgθ=30°

Q: 2. d. the specific enthalpy of compressed liquid water at P = 20.0 MPa and T = 40 °C. Determine the…

A: Given: d) Pressure = 20 MPa Temperature = 40 °C 2) Pressure = 15 MPa Temperature = 100 °C

Q: Carbon dioxide (CO₂) fills a closed, rigid tank fitted with a paddle wheel, initially at 80°F, 50…

Q: Saturated water vapor is contained in a rigid container. Its energy is then increased until the the…

Q: A rigid, well-insulated tank contains a two-phase mixture of ammonia with 0.0025 ft3 of saturated…

Q: the uniform concrete pole has a mass of 25 tons and is slowly being lifted to a vertical position…

A: Given data:- Mass of the pole = 25 tons And theta = 60 ° Find the tension in the horizontal cable.

Q: 1. A winter fuel has 10% and 90% evaporation temperatures of 122°F and 360°F with midpoint boiling…

A: Given data: Winter Fuel has the following properties: 10% at 122°F, T10 = 122°F 50% at 190°F , T50 =…

Q: B: Iraq Glass Industries Company produces two types of products, A and B, each one goes through two…

A: Detailed explanation and solution of the above problem uploaded in below pictures.

Q: The two members are connected by two 20-mm bolts. If P = 10 kN, determine the normal and shear…

Q: Instruction: a. Draw a schematic diagram of each problem with labels of states of a substance; b.…

A: To find: a)Thermal efficiency b) Mass flow rate of the steam entering the first turbine

Q: An absolute pressure of 7 psia corresponds to what gage pressure for standard atmospheric pressure…

Concept explainers

Mechanisms of heat transfer

Heat transfer is an essential discipline in thermal engineering that deals with the transfer, conversion, usability, and creation of heat or thermal energy. Transfer of heat occurs through various mechanisms like conduction, convection, radiation, and change of phases. All these mechanisms have distinct characteristics, but these mechanisms can simultaneously occur in an identical system.

Question

Ammonia refrigerant circulates in a refrigeration system with one compressor serving two evaporators where one evaporator carries a load of 35 kW at 10°C and the other a load of 70 kW at -5°C. A back pressure valve reduces the pressure in the 10°C evaporator to that of the -5°C evaporator. The condensing temperature is 37°C. Calculate the mass of the refrigerant in kg/s. (Use h₂ = h1 + 203.7586 kJ/kg)

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 1 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

For a 10 ton capacity refrigeration system, the pressure of refrigerant in the evaporator is 210 kPa, whereas in the condensor it is 900 kPa. If refrigerant R-134a is used under saturated conditions, calculate the theoritical power required to operate the compressor (kW)
An ammonia refrigerating system has a load of 250 kW and operates at a condensing pressure of 1400 kPa and an evaporating temperature of -20°C. The refrigerant exits at the evaporator with a 5- degree superheat. The vapor enters the compressor suction at 10-degree superheat. The compressed vapor is discharged from the compressor at the condensing pressure and 150°C. The refrigerant exits the condenser as saturated liquid. a. State the enthalpies at each point: Point enthalpy kJ/kg h kJ/kg kJ/kg h2 kJ/kg h3 kJ/kg h4 Answer: kg/sec b. Calculate the mass flow of refrigerant Answer: kW C. Determine the size of the motor drive if the mechanical efficiency of the motor- compressor is 77%. Answer: kW Calculate the total heat rejected in the condenser. d. Determine the refrigerating efficiency of the system. Answer: е.
A refrigeration system using refrigerant 12 is to have a refrigerating capacity of 80 kW. The cycle is a standard vapor-compression cycle in which the evaporating temperature is -15°C and the condensing temperature 30°C. Determine the volume flow of refrigerant measured in liters per second at the inlet to the compressor.
A cooling system with a capacity of 10 tons of refrigeration operates at 210 KPA in the evaporator while in the condenser it is 850 KPA if the R-134a refrigerant is in a saturated state calculate the theoretical power required to operate the compressor.
For a 15 ton capacity refrigeration system, the pressure of refrigerant in the evaporator is 150 kPa, whereas in the condenser it is 1380 kPa. If ammonia (R-717) is used under saturated conditions, calculate the theoretical power required to operated the compressor (kW)
Fill in the blanks: In an ammonia refrigeration system, the pressure in the evaporator is 251 kPaa, and the ammonia at the evaporator entry is 0.1511 dry while at exit is 0.95 dry. If the rate of ammonia circulation is 4.56 kg/min, determine the refrigerating capacity of the system. Use the properties of ammonia from refrigerants' table. TR
For a 10-ton-capacity refrigeration system, the pressure of refrigerant in the evaporator is 210 kPa, whereas in the condenser it is 800 kPa. If R-134a is used under saturated conditions, calculate the theoretical power required to operate the compressor.
A refrigeration system with a capacity of 10 tons of refrigeration, operates at 210 kPa in the evaporator, while in the condenser it is 750 kPa. If R-134a refrigerant is in a saturated state, calculate the theoretical power required to operate the compressor. Compressor Power = kW
A refrigeration system using R22 is to have a refrigerating capacity of 60 kW. The evaporating temperature is -50C and condensing temperature of 350C. Determine the volume flow rate of the refrigerant at the inlet to the compressor, the power required by the compressor, and the fraction of vapor in the mixture at the entrance to the evaporator. Use the spreadsheet to solve this problem.
A refrigeration system using R22 is to have a refrigerating capacity of 60 kW. The evaporating temperature is -5degC and condensing temperature of 35 deg-C. Determine the volume flow rate of the refrigerant at the inlet to the compressor, the power required by the compressor, and the fraction of vapor in the mixture at the entrance to the evaporator. Use the spreadsheet to solve this problem.
A refrigeration system using refrigerant 22 is to have a refrigerating capacity of 80 kW. The cycle is a standard vapor compression cycle in which the evaporating temperature is -8 and the condensing temperature is 42a. Determine the volume flow of the refrigerant measured in cubic meters per second at the inlet of the compressorb. Calculate the power required by the compressorc. At the entrance to the evaporator what is the fraction of vapor in the mixture expressed both on a mass basis and a volume basis?
The mass flow rate of the refrigerant in a Single Stage Vapor Compression (SSVC) refrigeration system is 0.015 kg/s and the evaporating and condensing temperatures shall be -20°C and 50°C, respectively. Determine the COP of the system.