8-64 Air enters the evaporator section of a window air conditioner at 100 kPa and 27°C with a volume flow rate of 6 m/min. Refrigerant-134a at 120 kPa with a quality of Ä 0.3 enters the evaporator at a rate of 2 kg/min and leaves as sat- urated vapor at the same pressure. Determine the exit tempera- ture of the air and the exergy destruction for this process, assum- ing (a) the outer surfaces of the air conditioner are insulated and (b) heat is transferred to the evaporator of the air conditioner from the surrounding medium at 32°C at a rate of 30 kJ/min. O Type here to search

8-64 Air enters the evaporator section of a window air conditioner at 100 kPa and 27°C with a volume flow rate of 6 m/min. Refrigerant-134a at 120 kPa with a quality of Ä 0.3 enters the evaporator at a rate of 2 kg/min and leaves as sat- urated vapor at the same pressure. Determine the exit tempera- ture of the air and the exergy destruction for this process, assum- ing (a) the outer surfaces of the air conditioner are insulated and (b) heat is transferred to the evaporator of the air conditioner from the surrounding medium at 32°C at a rate of 30 kJ/min. O Type here to search

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: P₁ = 1.6 MPa T₁=350°C m = 16 kg/s Q=? Turbine W=9 MW 2+1₂=30°C sat. vapor

Q: Helium gas (C,=5.19 kJ/kgK, k=1.67) is compressed steadily from 100 kPa and 30°C to 600 kPa at a…

A: The given values are - P1= 100kPa, T1 =30°C =303 K, P2= 600kPaη=0.6 , k=1.67 , Cp=5.19 kJkgKFor an…

Q: R134-a enters the condenser of a residential heat pump at 800 kPa and 40°C at a rate of 0.018 kg/s,…

A: Given Pressure, P = 800 kPa Mass flow rate, m = 0.018 kg/s Power, W = 1.2 kW Find COP…

Q: Refrigerant 134a enters a compressor as saturated vapor at -10 degrees C and leaves it at 280kPa and…

Q: A piston-cylinder device initially contains 2 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

A: Given data: m=2 kgP1=100 kPaT1=20°CP2=120 kPaT2=80°CTo=25°CPo=100 kPa Need to determine the work…

Q: Нeat 4 Exchanger water 3 Figure 2 What is the specific isentropic work done of compressor in kJ/kg?…

A: Given data: The initial temperature of the air is T1 = 30 oC. The final temperature of the air is…

Q: A nozzle receives 0.5 kg/s of air at a pressure of 2700 kPaa and a velocity of 30 m/s and with an…

Q: 5. An open feedwater heater that operates at a pressure of 1000 kPa. Feedwater at 50°C and 1000 kPa…

Q: A Freon 12 vapour compression system operating at a condenser temperature of 40°C and an evaporator…

A: Given dataTe=0°CTc=40°CRC=15 tonsTo find 1. m°2. discharge temp Tb

Q: moist air supplied to an air conditioned room is 600 m3 /min. The External conditions are 34.4°C DBT…

Q: Hydraulic circuits use schematic drawings to 1-Make untrained and improper knowledgeable person…

A: Hydraulic circuits: Hydraulic circuits is used to transmit and control the power from the mechanical…

Q: 2.13 Air at 30°C and 2MPa flows at steady state in a horizontal pipeline with a velocity of 25 m It…

Q: A completely insulated mixing vessel is designed to deliver water at 60 ⁰C and atmospheric pressure…

Q: Steam at 200 kPa and 150°C is used to prepare hot water in a flow system. The steam cools and…

A: Steam at entry point,Saturated liquid condensate at exit,Water at entry,Water at exit,

Q: The air conditions at the intake of an air compressor are 28oC DB, 50% RH, and 101.325 kPa. The air…

Q: Consider a household refrigerator that uses HFC-134a as the refrigerant, operating between the…

A: Consider a household refrigerator that uses HFC-134aas the refrigerant and is operating between the…

Q: Refrigerant-134a is to be cooled by water in a condenser. The refrigerant enters the condenser with…

Q: Hot exhaust gases leaving an internal combustion engine at 400oC and 150 kPa at a rate of 0.8 kg/s…

Q: It is proposed to have carbon dioxide (CO2) gas pass through an uninsulated nozzle. The CO2 is to…

Q: A nuclear reactor power plant utilizing water as the working fluid is shown schematically below. The…

Question

100%

Air enters the evaporator section of a window air
conditioner at 100 kPa and 27°C with a volume flow rate of
6 m/min. Refrigerant-134a at 120 kPa with a quality of
0.3 enters the evaporator at a rate of 2 kg/min and leaves as sat-
urated vapor at the same pressure. Determine the exit tempera-
ture of the air and the exergy destruction for this process, assum-
ing (a) the outer surfaces of the air conditioner are insulated and
(b) heat is transferred to the evaporator of the air conditioner
from the surrounding medium at 32°C at a rate of 30 kJ/min.
8-64
P Type here to search
TAKING YOU TO A
NEW REALITY
FULL
HD 1080
acer
www.acer.com/mixedreality

in
6 m'/min
AIR
R-134a
2 kg/min
min
sat. vapor
4

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 Given Data

Step 2 GIVEN FIGURE

Step 3 Calculation

Step 4 Calculation

Step 5 Calculation

Step 6 Calculation

Step 7 Calculation

Trending now

This is a popular solution!

Step by step

Solved in 7 steps with 7 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

Refrigerant 134-a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at 100 kPa with quality of 20 percent and leaves at 100kPa and -26 C as shown in Figure 2. If the compressor consumes 600 W of power and the COP of the refrigerator is 1.2 determine: - The mass flow rate of the refrigerant The rate of heat rejected to the kitchen air la Condenser W. X Expansion valve 100 kPa x-0.2 Compressor Evaporator e 100 kPa 260
A flash chamber has R-134A entering with a quality of 0.25 at a pressure of 5 bar. The saturated liquid from the flash chamber goes through a throttling value, an evaporator, and a compressor where it is compressed to 5 bar and 40°C. The saturated vapor from the flash chamber recombines with the remaining refrigerant in an open heat exchanger at a pressure of 5 bar. What are the enthalpy and temperature of the refrigerant exiting the heat exchanger?
Question attached
Refrigerant R-134a enters an adiabatic compressor as saturated vapor at 100kPa at a rate of 0.5kg/s and exits at 1 MPa pressure. If the isentropic efficiency is 85%, what is the temperature of the refrigerant at the exit of the compressor?
An adiabatic and steady-flow turbine with air as the working fluid initially at 6000 kPa and 550 K has a flow rate of 13.5 kg/s. At the exit of this turbine the air expands by 10 times its original specific volume to a pressure of 320 kPa. (a)What is the temperature of the air at the outlet of the turbine (in K)? Provide your answer up to 1 decimal place using rounding (b)Assume that specific heats vary with temperature. What is the power produced in kW? Round your answer to the nearest whole number. (c)If specific heats are evaluated at the average temperature, what is the power produced by this turbine in kW? Round your answer to the nearest whole number.
Thermodynamic
Refrigerant 134-a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at 100 kPa with quality of 20 percent and leaves at 100kPa and -26 C as shown in Figure 2. If the compressor consumes 600 W of power and the COP of the refrigerator is 2.2 determine: The mass flow rate of the refrigerant The rate of heat rejected to the kitchen air la Condenser W. Expansion valve 100 kPa -0.2 Compressor Evaporator e 100 kPa 260
A completely insulated mixing vessel is designed to deliver water at 60 ⁰Cand atmospheric pressure at a rate of 4 kg/s by mixing two streams of incomingwater in an environment at 25 ⁰C. Saturated steam at atmospheric pressure isinserted on the hot side. Two options are being considered for the cold side: (a)chilled water from the plant at 3 ⁰C or (b) water from the tap at 20 ⁰C (both atatmospheric pressure). 1. Determine the thermal efficiency of each process
A small auditorium is required to be maintained at 22 C DBT and 70% RH. The ambient conditions are 30 C DBT and 75% RH. The amount of free air circulated is 200m3/min. The required conditions are achieved by first cooling and dehumidifying through a cooling coil having apparatus dew point of 140C and then by heating. With the help of psychrometric chart, find: i) capacity of cooling coil in TR and its by pass factor, ii) the amount of water vapor removed by the cooling coil in kg/hr, ii) capacity of heating coil in KW and its surface temperature. Assume bypass factor as 0.2 IES1992
Air enters the compressor of a gas-turbine engine at 300 K and 100 kPa, where it is compressed to 700 kPa and 580 K. Heat is transferred to air in the amount of 950 kJ/kg before it enters the turbine. For a turbine efficiency of 86 percent, determine: (a) the fraction of turbine work output used to drive the compressor, (b) the thermal efficiency.Assume: constant specific heats at 300 K.Ans: 50.1%, 29.6%
49
Consider the conditions of Problem 1, homework 5 (it is repeated below) and that the surroundings are at a temperature of 4 C. Instead of mixing the two fluids together consider the following proposal. Heat is allowed to flow from the 3 Kg mass of water through a Carnot heat engine and is rejected to the cooler mass which acts as the low temperature thermal reservoir. Determine the maximum amount of work that could be performed by the heat engine, the entropy produced, and the exergy destroyed in the 3 Kg mass during this operation. Also, determine the total entropy produced and exergy destroyed in the total system. In this case the temperature and internal energy of the mass of water is changing unlike the infinite heat reservoir case. Since the temperature of both the high temperature and low temperature heat input is changing, the Carnot efficiency is also changing. This problem should be solved using a numerical technique that you write using either excel or Matlab. In…