Helium gas is compressed from 0.303 MPa and 275 K to 4.04 MPa and 300 K in a Claude refrigeratorutilizing a wet expander with a saturated-vapor compressor. Twenty percent of the compressed gas isdiverted through the main expander entering at 190 K and leaving at 0.303 MPa. The helium enters thelow temperature compressor at 0.101 MPa as saturated vapor and leaves at 0.303 MPa. If thecompressors, expanders and heat exchangers for this refrigerator are assumed to be ideal, determinethe refrigeration effect, coefficient of performance and figure of merit when no expander work isrecovered. The following thermodynamic properties are obtained from thetemperature--entropydiagram for helium:hl (0.303 MPa, 275 K) = 1444 kJj/kgs1 (0.303 MPa, 275 K) = 28.7 kJ/kg KHh2 (4.04 MPa, 300 K) = 1586 kJ/kg$2 (4.04 MPa, 300 K) = 23.75 kJ/kg Kh3 (4.04 MPa, 190 K) = 1013 kJ/kg$3 (4.04 MPa, 190 K) = 21.4 kJ/kg Kh7(0.101 MPa, saturated vapor) = 31 kJjkg$7(0.101 MPa, saturated vapor) = 8.4 kJjkg Khf (0.101 MPa, saturated liquid) = 10 kJjkgsf (0.101 MPa, saturated liquid) = 3.45 kJjkg Kwwwww

h10.303 MPa,275 K=1444kJ/kgs10.303 MPa,275 K=28.7kJ/kgKh24.04 MPa,300 K=1586kJ/kgs24.04 MPa,300…

Answered: Helium gasi

Engineering

Mechanical Engineering

Helium gasi

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: Air is compressed in a compressor through the purely polytropic, purely isothermal, and intercooling…

A: The intercooling process is 1-X-X'-2 Answer: B. 1-X-X'-2

Q: All the parts of internal combustion and their various functions?

A: Parts of internal combustion engines are listed and explained below Cylinder block: It is a…

Q: From the enthalpy-concentration diagram find the location of heat removed by the condenser. Enthalpy…

A: The location of X is the heat removed by the condenser where the total heat removed by the total…

Q: In the cooling curve shown, the heat of fusion would be used to calculate the energy released in the…

Q: Given the ultimate/gravimetric analysis of coal as follows: C=81.95%, H2 = 4.63%, S=0.96%, N2=1.3%,…

A: Carbon (C) = 81.95%Hydrogen (H2) = 4.63%Sulfur (S) = 0.96%Nitrogen (N2) = 1.3%Oxygen (O2) = 5.75%Ash…

Q: For a mixture, the pressure and temperature are independent properities. True Fal

A: For a mixture pressure and temperature are dependent properties. It means that the boiling…

Q: The temperature of a gas undergoing a continuous throttling process _______ across the throttling…

A: This question is based on the concept of throttling process and inversion curve.

Q: 1.How the analyses and calorific values of fuels can be reported? 2.Discuss crank case Ventilation,…

A: Since we only answer one question at a time, we will answer the first one. Please resubmit the…

Q: How can we calculate air enthalpy change?

A: The change in the enthalpy is the content of heat or it can be defined as the amount of heat that…

Q: At critical pressure, value of Hg-Hf is *

A: At critical pressure, value of Hg-Hf is Answer: 0 (zero)

Q: 5. Define moist air

A: Hot air generally from the water sources takes the moisture content with them. This air rises and…

Q: What is the purpose for determining or measuring the air humidity? (Question about airconditioning)…

A: Humidity can be defined as the amount of water vapor in the air. Humidity can be measured with the…

Q: ncomplete combustion is permitted because a significant amount of heat is still generated. true of…

A: Explanation The Incomplete combustion is never permitted because During incomplete combustion some…

Q: Q3: Under which kind of industrial chemical process can you classify the designated treatment during…

Q: Definition of Indicated mean effective pressure

A: Hi and thank you for the questions. since you have asked multiple questions, as per our policy we…

Q: Pump gasoline may contain a small amount ofalcohol. Name three problems that can occur ifthere is an…

A: A minor quantity of alcohol may be present in pump gasoline. A allowed level of alcohol in…

Q: Briefy discuss the photosynthesis and state its importance in petroleum engineering point of view

A: To find:- discuss the photosynthesis and state its importance in petroleum engineering point of view

Q: For Questions 7 and 8 Air enters a humidifier at 34.25°C and 30% RH. If the air leaves the…

A: (7) Write the given data. T1=34.25 °CRH1=30%RH2=70%

Q: 6-The point at which water directly converts into steam is called ___________ A. sensible heat of…

A: The point at which water directly converts into steam is called latent heat of vaporisation.…

Q: Define boiler draught and the types and why natural draught is produced by means of a chimney.

A: Please find the solution below for the Boiler draught definition and the types And the reason why…

Q: Based on the information on steam tables, select the correct description of H20 at T= 300 °C and Vg…

A: The Observation is on the Steam Table which is R-12 or A-4 According to this data the observation is…

Q: Enthalpy of vaporisation is equal to __________at critical point. A. saturation temperature B.…

A: The critical point is the condition of phase equilibrium where there is no distinction between…

Q: If Cp is 1.012 kJ/kgK for air, then its Cv value is ____________

A: We have to find Cv

Q: What is the cooling system(and its function) of the internal combustion engine? For the detailed…

Q: Given the ultimate/gravimetric analysis of coal as follows: C-81.95%, H2 = 4.63%, S=0.96%, N2-1.39%,…

A: Carbon (C) = 81.95%Hydrogen (H₂) = 4.63%Sulfur (S) = 0.96%Nitrogen (N₂) = 1.3%Oxygen (O₂) = 5.75%Ash…

Q: Which of the following statement is correct for Isothermal process? Select one: O a. The value of…

Q: Which of the following belongs to the special classification of Mach Number? Subsonic Transonic…

Q: QJA- How are enthalpy, internal energy, and pressure related to each other for a pure substance?

A: Energy interaction in any system takes place through microscopic interactions and macroscopic…

Q: Ideal gas law is stated as OP=RT/p OR=PTP P = R Tp None of the above

A: Ideal gas law is

Q: Q.5 Which of the following is true for a pure substance at critical point A enthalpy of vaporization…

A: Data given - Critical point : it a set of condition { at critical temperature , criticalpressure…

Q: Determine the type of steam, given: Enthalpy: 2502 k/kg Pressure: 0.85 MPa O Superheated Vapor O…

A: Steam in general can exits different phases as subcooled liquid, saturated liquid, saturated wet…

Q: A fuel oil C12H26 is used in an internal combustion engine and the Orsat analysis are as follows:…

Q: 15. Describe a superheated vapor.

A: Here, point s represent superheated steam.

Q: 10. An ideal monatomic gas goes through the following cycle. It starts at a point a…

Q: Select all correct statements below to regarding the specific heats._______ A. cp and cv are…

Q: EPR is indicative of turboshaft engine power jet engine deterioration turbojet engine thrust

A: Jet engines use EPR as an indicator of thrust.

Q: Tdb refers to .2 -- the moist air temperature. none of the above. O the wet air temperature. the…

A: what Tdb refers to.

Q: a. What is the difference between external combustion engine and internal combustion engine? b. What…

A: The burning of fuel in the presence of oxygen is known as Combustion. The aim of combustion is to…

Q: Given the ultimate/gravimetric analysis of coal as follows: C=81.95%, H2 = 4.63%, S=0.96%, N2=1.3%,…

A: Write expression for combustion equation of coal (for 100 kg of coal).Here indicates percent…

Q: Which measure does not necessarily increase the boiler efficiency? Please choice one below :…

A: Which measure does not necessarily increase the boiler efficiency? Please choice one below :…

Question

Helium gas is compressed from 0.303 MPa and 275 K to 4.04 MPa and 300 K in a Claude refrigerator
utilizing a wet expander with a saturated-vapor compressor. Twenty percent of the compressed gas is
diverted through the main expander entering at 190 K and leaving at 0.303 MPa. The helium enters the
low temperature compressor at 0.101 MPa as saturated vapor and leaves at 0.303 MPa. If the
compressors, expanders and heat exchangers for this refrigerator are assumed to be ideal, determine
the refrigeration effect, coefficient of performance and figure of merit when no expander work is
recovered. The following thermodynamic properties are obtained from the
temperature--entropy
diagram for helium:
hl (0.303 MPa, 275 K) = 1444 kJj/kg
s1 (0.303 MPa, 275 K) = 28.7 kJ/kg K
H
h2 (4.04 MPa, 300 K) = 1586 kJ/kg
$2 (4.04 MPa, 300 K) = 23.75 kJ/kg K
h3 (4.04 MPa, 190 K) = 1013 kJ/kg
$3 (4.04 MPa, 190 K) = 21.4 kJ/kg K
h7(0.101 MPa, saturated vapor) = 31 kJjkg
$7(0.101 MPa, saturated vapor) = 8.4 kJjkg K
hf (0.101 MPa, saturated liquid) = 10 kJjkg
sf (0.101 MPa, saturated liquid) = 3.45 kJjkg K
ww
www

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

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

(b)As thebarometric pressure increases, the boiling point of a liquid _________
what are Miller index in the following plane?
The evaporative cooling follows a line of constant dry bulb temperature. True False
Please solve This question correctly with all parts correctly in 30 minutes and get thumbs up
Enthalpy of vaporisation decreases as the A. temperature or pressure increases. B. temperature or pressure decreases. O C. saturation point approaches zero O D. critical point approaches infinity
Please help me
Why was diameter used instead of area in the equivalency equation?
Thermal Evaluation: How does the ideal gas model help evaluate properties of ideal gases ?
Figure P.16.10 shows a plane truss pinned to a rigid foundation. All members have the same Young's modulus of 70 000 N/mm² and the same cross-sectional area, A, except the member 12 whose cross-sectional area is 1.414A. Under some systems of loading, member 14 carries a tensile stress of 0.7 N/mm². Calculate the change in temperature which, if applied to member 14 only, would reduce the stress in that member to zero. The coefficient of linear expansion a=24x10-/º C. Ans. 5.5°.
LNG is transported in specially designed vessels with specially insulated storage tanks and cryogenic facilities for handling LNG Select one: True False
Sulfur dioxide, Temperature = 600 K and pressure is 300 bar. The critical temperature is ____ K. (Four significant figures) The critical pressure is 78.84 ____. The acentric factor is ____. The calculated reduced pressure is ____ while the reduced temperature is ____. (Four significant figures) The estimated _____ is 0.724 and therefore the _____ is 217.14 _____. The resulting residual gibbs free energy (nondimensionalized) is _____. (Three significant figures). Increasing the pressure may increase the ______.
Select the correct relation for the isentropic process of ideal gases_________ A. B. C. D.