NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 140 kPa. The refrigerant absorbs 200 kJ of heat from the cooled space, which is maintained at -10°C, and leaves as saturated vapor at the same pressure. Problem 07.025.c - Total entropy change of the process

NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure of 140 kPa. The refrigerant absorbs 200 kJ of heat from the cooled space, which is maintained at -10°C, and leaves as saturated vapor at the same pressure. Problem 07.025.c - Total entropy change of the process

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: In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…

A: Given: Sensible heat=30 kJ/s Latent head added= 20 kJ/s To find:- Sensible heat factor

Q: Find the dryness fraction of a steam having a specific volume of 15 m3 /kg after expansion in a…

A: Given that, Specific colume of steam after expansion from turbine, v=15 m3/kgSpecific volume of…

Q: 2. A rigid tank initially contains 2.75 L of air at 125 kPa and 27°C. An electrical resistance…

A: The volume of the tank is V=2.75 L The initial temperature is T1=27°C=300 K. The initial pressure is…

Q: Inside a piston-cylinder device there is 5 kg of a moist water vapor at 125 kPa. At the beginning…

Q: What is the status of Refrigerant-134a at 10°C and 1 MPa?

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: The initial volume is The initial pressure is .The initial temperature is .The final pressure is…

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

Q: An adiabatic condeser receives 100 kg/s of steam at 92% quality and 6- kPa. The steam leaves at 60…

Q: Q.2.) A piston-cylinder device contains 0.8 m3 of Air at 300 kPa and 400°C. Air is now allowed to…

A: Given data Specific heat at average temperature is Assume air as the ideal gas.

Q: A four -cylinder Carnot engine having a 90 x 120-mm bore and stroke operates between 420 deg C and…

A: SOLUTION FOR 1ST QUESTION GIVEN DATA BORE D=90mm STROKE L=120mm HIGHER TEMPRATURE =420'C LOWER…

Q: Explain using the concept of Ideal gas laws on how do you make a cold body, and how air conditioners…

Q: A tank whose volume is unknown is divided into two parts by a partition. One side of the tank…

Q: The air has a dry ball temperature of 40 ℃ and a wet bulb temperature of 26 ℃ initially heated in…

A: On the basis of given information we can draw the process as shown. process 1 to 2 is sensible…

Q: In a steam power plant, steam enters the turbine at 3 MPa and 600 C. The condenser pressure is 15…

Q: Refrigerant R-134a to the compressor of a refrigeration machine It enters at 140 kPa pressure and…

Q: An insulated tank that contains 2.6 kg of O2 at 15°C and 300 kPa is connected to a 2-m³ uninsulated…

A: Given data as per the question Mass of Oxygen =2.6 kg The initial temperature of oxygen =150 c The…

Q: An adiabatic compressor receives 0.5 kg/s of helium at 175 kPa and 320 K and discharges it at 0.8…

Q: Refrigerant 134A has a temperature of 48°C as it enters a valve as a saturated liquid. When leaving…

Q: Refrigerant -134a at 200 kPa and 40 C flows through a refrigeration line. Determine its specific…

A: Given: The pressure of the refrigerant is P=200 kPa. The temperature of the refrigerant is T=40°C.

Q: A summer air conditioning system, consisting of a cooling coil and a reheat coil, supplies air to a…

A: Dry bulb, due point, and wet bulb temperature: Dry bulb temperature is a normal temperature…

Q: Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

A: Given: The air compressed by compressor m=10 Ls The pressure at inlet P1=120 kPa The temperature at…

Q: 300 kPa pressure and 20 oC water flowing with a mass flow rate of 2 kg / s, 300 kPa pressure and 300…

Q: In Otto Cycle, air at 18oC is first compressed to one- eight of its original volume. If the heat…

Q: A rigid tank of 0.22-m'volume initially contains saturated vapor refrigerant-134a at 1.2 MPa. The…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

Q: A refrigeration plant works between the temperatures limits of -5°C and 25°C. The refrigerant is CO2…

A: Write the expression of the theoretical COP. COPtheo=TcTh-Tc=-5+27325+273 K--5+273=8.93…

Q: A schematic of a steam power plant is shown in the figure. The boiler volume is 50 liter and…

Q: calculate efficiency Determine the value of water X by

A: Given: The turbine inlet pressure and temperatures are 150 bar and 550 C. The pressure at the…

Q: 15- R134a enters a compressor with a heat loss of 200 W as saturated steam at -24 ºC and after…

A: Solution : from the properties of R-134 a @-24°C density of gas =5.76162 kg/m3

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

Q: Air at 90°F (27°C) and 14.7 psia (101.3 kPa) is heated by passing over a steam coil. If steam enters…

Q: Saturated steam at an absolute pressure of 5 bar is used to heat a stream of dry air. Air enters a…

A: Heat exchangers are used to transfer heat from one medium to another. They can be of direct contact…

Q: Air at 20 ° C and 50% RH is channeled into the heating coil so that the temperature of the dry ball…

A: Given data:

Q: 300 kPa and 20 ºC water is heated in a mixing room with 300kPa pressure and 300 ºC steam. If the…

Q: 6. A Carnot power cycle employing 1 lbm of air as a working substance is presumed to operate between…

A: Given data: The mass of air as a working fluid is m=1lbm The temperature at the beginning of the…

Q: Your second customer wants to determine the dissipated electrical power by a personal computer,…

A: The pressure is P1=101.325 kPa. The inlet temperature of air T1=21 °C. The exit temperature of air…

Q: the turbine at 1 MPa and 300°C. It exits the turbine at 500 kPa, saturated vapor. The steam is then…

A: Calculated turbine work in MW .and heat rejected from condenser in MW. And mass flow rate of cooling…

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

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

Step 2

Step 3

Step 4

Trending now

This is a popular solution!

Step by step

Solved in 4 steps with 4 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

in a steam power plant, steam enters the turbine at 4 MPa and 500 C. The condenser pressure is 15 KPa. The turbine and pump isentropic efficiencies are 90 % and 85 %, respectively. Determine the actual net work in kJ/kg. In solving, use two decimal places for the enthalpies/energies while four decimal places for the steam quality. For the final answer, use two decimal places.
In a steam power plant, steam enters at 8 MPa and 550 C, the condenser pressure is 8 kPa, and the net power out of the plant is 100MW.
An air-standard set of processes with constant specific heats is executed in a closed system and is composed of the following:1-2 Isentropic compression from 100 kPa and 25°C to 600 kPa2-3 Isometric heat addition to 1500 K3-4 Isentropic expansion to 100 kPa4-1 Isobaric heat rejection to initial state Question: Following the given data, perform the following:a. Plot the P-V and T-S Diagram of the cycleb. Calculate the net work output of the cycle (kJ/kg)c. Calculate the Thermal Efficiency (%)
Need solution to question 6 only within 20 minutes (answer of question 5 is 6.82m/s)
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. An adiabatic air compressor compresses 10.4 L/s of air at 120 kPa and 20°C to 1000 kPa and 300°C. The constant pressure specific heat of air at the average temperature of 160°C = 433 K is cp= 1.018 kJ/kg.K. The gas constant of air is R = 0.287 kPa.m³/kg-K. 1 MPa 300°C Compressor 120 kPa 20°C Vus Determine the work required by the compressor. (You must provide an answer before moving on to the next part.) The work required by the compressor is -4.578 kJ/kg.
A and B containers (fixed volume) are connected together by a valve. Tank A contains 400 kPa and 0.3 m3 refrigerant 134a at 60% dryness. Tank B contains 0.5 m3 of refrigerant 134a at 240 kPa pressure and 100 oC temperature. Then the valve is opened and the system reaches 280 kPa equilibrium pressure. Calculate the final temperature.
calculate the amount of heat required to generate 3000 kg of dry saturated steam at a pressure of 8 bar from water available at 30°C.
2 of 2 Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable return to this part. Air at 620 kPa and 500 K enters an adiabatic nozzle that has an inlet-to-exit area ratio of 2:1 with a velocity of 120 m/s and leaves with a velocity of 380 m/s. The enthalpy of air at the inlet temperature of 500 K is h=503.02 kJ/kg Determine the exit pressure of the air. The exit pressure of the air is -652.73 kPa.
Problem 6 The P-V diagram for a refrigerator is given below. It operates on 0.8 moles of H2. Process ab is isothermal. Answer the following questions: (a)What is the temperature at a and the pressure at b? (b) In which sub-processes heat is absorbed to cool the refrigerator and in which subprocess heat is given out by this system to the environment? (c) How much work is done by the system to run the refrigerator? (d) Using the answer to part (b) and (c), find the coefficient of performance of the refrigerator? P (atm) 0.700 V (m²) 0.0300 0.100
in a steam power plant, steam enters the turbine at 3.5 mpa and 600 c. the condenser pressure is 15 kpa. the turbine and pump isentropic efficiencies are 95 % and 94 %, respectively. determine the actual net work in kj/kg. in solving, use two decimal places for the enthalpies/energies while four decimal places for the steam quality. for the final answer, use two decimal places.
What is the enthalpy of refrigerant 134a with s = 0.94190 at 0.85MPa? (Superheated Vapor)
PLEASE ANSWER IT ASAP FOR AN UPVOTE