Question 2 of 4<>- / 25An office building requires a heat transfer rate of 30 kW to maintain theinsidetemperature at 21°Cwhen theoutsidetemperature isO°C. Avapor-compression heat pump with Refrigerant 134a astheworkingfluid isto beused to provide the necessary heating. Thecompressoroperates adiabatically with an isentropic efficiency of 82%.Determine appropriate evaporator and condenser pressures of a cyclefor this purpose assuming ATcond = ATevap = 10°C, asshown in the T-sdiagram. The refrigerantexitstheevaporator assaturated vapor and exitsthecondenser as saturated liquid at therespective pressures.ATcondOutsideair21°C0°CInsideairATentCondenserEvaporatorExpansionvalveCompressorStep 1Determinethe mass flow rate of refrigerant, in kg/s.m =kg/sAttempts: unlimited Submit AnswerSave for LaterUsing multiple attempts will impact your score.5% score reduction after attempt 2Step 2The partsof thisquestion must becompleted in order. This partwill be availablewhen you complete the part above.Step 3The partsof thisquestion must becompleted in order. This part will be availablewhen you completethe part above.

Heat Transfer Q=30kWTemperature,Ti=21°CTo=0°C∆Tcond=∆Teva=10°C To-Find:- Mass flow rate of…

Answered: apor-compression heat pump with…

apor-compression heat pump with Refrigerant 134a astheworking fluid is to be used to soroperates adiabaticallywith an isentropic efficiency of 82%. nea0nronriateevanoratorand.condeoERE

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: What is the difference between Reheat Regenerative Cycle and Regenerative Cycle. Which is more…

A: Given Reheat Regenerative Cycle Regenerative Cycle To find Difference Efficent

Q: An ice-making machine in Restoran Syed operates on the vapor-compression refrigeration cycle.…

A: Note: As per policy, we can solve the first three subparts. Please resubmit the remaining parts.…

Q: A domestic refrigerator using R-12 as a working fluid .The condensing and evaporating temperatures…

Q: A Carnot heat pump maintains a horne at 23 C during the cold season. At an average of -2C outsde…

A: Given: The temperature of home is TH=23°C. The outside temperature is TC=-2°C. The rate of heat…

Q: In order to obtain steam in boiler of steam power plants, heat is taken O a. from burning the bulk…

A: Steam power plant: The power plant that produces power by using the steam generated by burning the…

Q: A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the…

A: Coefficient of performance of refrigerator is defined as the ratio of heat removed from the sink to…

Q: 1. The condenser in the refrigeration system is used for -of the superheated gas. (a) Absorbing the…

A: Heat Pumps: The devices that transfer heat from cold bodies to hot bodies are called heat pumps.…

Q: All the nearby buildings' heating is provided by saturated steam generated at a nearby steam plant…

Q: A heat pump with refrigerant-134a (R-134a) as the working fluid is used to keep a space at 21 °C by…

Q: Refrigerant-134a enters the condenser at 200 kPa and 100C and it leaves at 200 kPa with a quality of…

A: Given data, Refrigerant is R-134a. Inlet condition to the condenser:- 200 KPa pressure and 10°C…

Q: Problem 2 – Heat Pump Thermodynamic Analysis Refrigerant-134a enters the condenser of a residential…

A: Given-The inlet pressure at condenser is The inlet temperature at condenser is The volume flow rate…

Q: A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a.…

A: ''Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Helium at 660 K expands in a turbine to 369 K during which 84 kJ/kg of heat was lost to the…

A: Given data as per the question The temperature of helium =660 k Temperature after expansion in…

Q: the amoun

Q: Consider a heat engine is operating on a steady‐flow Carnot cycle with water as the working fluid.…

A: Given:-Carnot cycleMass flow rate, m=0.5 kg/secTemperature ratio=TmaxTmin=2.5Quality of…

Q: A refrigeration plant running on R-134a operates between saturation temperatures 0°C and 45°C and…

Q: ind out the COP of a Carnot heat pump operating between temperatures 6o C and 37o

A: Given:Higher temperature, TH=37o C or 310 KLower temperature, TL=6o C or 279 K

Q: As shown in the figure, the stable operating air conditioner While the environment is 32oC, it keeps…

A: Given: The environment temperature, To = 32oC The temperature inside the indoor, Ti = 21oC The rate…

Q: Consider a cogeneration system operating as shown on the right Steam enters the first turbine stage…

A: please refer attached solution

Q: Helium at 660 K expands in a turbine to 420 K during which 77 kJ/kg of heat was lost to the…

Q: A vapor compression refrigeration cycle operates at steady flow conditions with 0.25 kg/s or R-134a.…

A: ''Since you have posted a question with multiple sub-parts, we will provide the solution only to the…

Q: 1) In the condenser of the power plant, Ammonia is isobarically condensed to saturated liquid state…

A: 1.

Q: A manufacturer conducted an experiment for an evaporator capacity 548.8 kW cooling. Enthalphies of…

A: Given Data The evaporator capacity is: Q=548.8 kW The absorbed refrigerant enthalpy is: h4=2549.62…

Q: An engine operating on the air standard heat engine, initially at 1.02 bar and 23 oC is compressed…

Q: Detemine the COP of a heat pump when it is working between 1000 K and 100 C.

A: Given Cold temperature = 100 C Hot temperature = 1000 K To find COP

Q: A system consists of one compressor and two evaporators. One evaporator carries a load of 35kw at…

Q: Refrigerator 2 is a refrigerator that operates as an ideal vapor refrigeration cycle, and uses the…

A: Given:The refrigerant and temperature conditions are the same as in Refrigerator 1.The compressor…

Q: Rheem RA1724AJ2 residential air conditioner provides 24,000Btu/hr total cooling capacity and…

Q: Refrigerant R12 is used in a vapour compression cycle. The saturated vapour enters the compressor at…

A: Given data :- The Specific enthalpy h,The specific entropy, s, at 10 bar to be 1.188 kJ/kgTo…

Q: A condenser takes in steam with enthalpy of 2450 kJ/kg and mass flowrate of 2 kg/s. It also…

A: in condenser process is constant pressure.

Q: 1. A steady -state steady flow thermodynamic system receives 100 of a fluid at min 30 psia and 200°F…

Q: developing 60kw of refrigeration using refrigerant R134a with condensing temperature 400C and…

Q: Consider a two-stage compression refrigeration system operating between the pressure limits of 0.8…

Q: Subject: Power Plant How To determine equivalent evaporation of boiler in steam power plant?

A: Given Data⇒ Equivalent evaporation of boiler Steam power plant

Q: Carnot-cycle heat engine having 1kg of air in a piston/cylinder arrangement. This heat engine…

Q: What is the specific refrigerant that meed for refrigeration and cryogenic plant for liquid oxygen…

A: Refrigeration and cryogenic plants used in liquid oxygen production typically operate at very low…

Q: 11. a heat pump using R-717 as a refrigerant operates between saturated temperature of 6 oC and 38…

A: Refrigerant=R717Evaporator temperature, Te=6oCCondenser temperature, Tc=38oCUnder cooling in the…

Q: {- Consider two vapor compression refrigeration cycles .The refrigerant enters the hrottling valve…

Q: show that if two bodies of thermal Capacities C, and C₂ at temp brought to the same temperature T…

A: To show : The equation lnT=C1lnT1+C2lnT2C1+C2. Given : The thermal capacity are C1,C2 The…

Q: 2)A Carnot Cooler delivers 2500 Kj of energy to the environment at 80°C. If wnet is 1100kj for this…

A: Given Data:- Net work, W= 1100 kJ

Q: Refrigerant-134a enters the condenser of a heat pump at 1000 kPa and 50°C with a rate of 0,02 kg/s.…

Q: An ideal refrigeration system using R-134a, working at -10 °C and 30 °C for evaporator and…

Q: A domestic refrigerator using R-12 as a working fluid.The condensing and evaporating temperatures…

A: INTRODUCTION : Refrigeration is the process of maintaining a colder temperature than the ambient…

Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

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 Given-Data:-

VIEW

Step 2

VIEW

Step 3 Calculations:-

Step 4

Step 5

Step 6

Step 7 Final-Answer:-

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 7 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

Saturation: Pressures Specifie Volume Sa Internal Energy Sal Ligule Entropy Set. Ligurd Enthalpy Pr Tegp Ligld 10, Sat. Vaper Sal. Liquid Sat Veper Sat. Vapor Erap Er 10 DO06113 .0007 COC3 .co09 01 1.0002 206 136 1.89 1.0001 181 255 3.77 1.0001 159 675 5.45- 1.0001 142 789 00 2.75.3 23753 7.90 23700 2377.9 15.81 2364.7 23806 22.88 23600 2382.9 · O1 25013 2501.4 7.91 24969 2504 8 15.81 2492.5 2508.3 22.89 2488 5 2511.4 0000 9.1562 9.1562 0288 9.0775 9,1064 0575 8.9999 9.0573 ON29 8.9312 9,0:42 .0010 0011 0012 0013 .0014 6.98 1.0002 129 208 8.37 1.0002 118 042 9.66 LO003 108 696 10.86 11.98 29.30 2355.7 2385.0 35.17 23518 2386.9 40.58 2348.1 2388.7 45.60 2344.7 23903 50.31 23416 2391.9 29.30 24849 2514.2 35.17 2481.6 2516.8 40.58 2478.6 2519.1 45.60 2475.7 25213 503I 2473.1 2523.4 1059.R8697 8.9756 1268 8.8140 8.9408 1460 8.7631 8.9091 1637 8.7162 8.8799 1802 8.6727 8.8529 1.0004 100 755 1.0005 93 922 54.71 2338.6 2393.3 58.87 2335.8 2394.7 62.80 2333.2 2396.0 66.53 2330.7 23972 70.09…
2.) An actual Rankine Engine is used to power a generator. The steam enters its turbine at 4 MPa and 300C then expands in an irreversible adiabatic process where it becomes saturated vapor. It enters the condenser with a pressure of 5 kPa. Find Ec, W(W₁, W₁, Wk) the remaining engine efficiencies(n,, na, nx), thermal efficiencies (e₁, 3, ek), SR(SR₁, SR₂, SR), HR(HR, HR, HR) obtained if the turbogenerator has 85% mechanical efficiency and 90% generator efficiency. 2822.88 kg W 27 e SR HR I 399.2 39.08% 14.14% 25456.73 B 339.32 33.22% 12.02% 29949.35 305.39 29.89% 10.82% 33276.96 k kg kj kg kg kWh kg kWh kg kWh 9.02- 10.61 11.79 kWh kj kWh
Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator temperature is -30°C. Saturated vapor enters the condenser at 36°C, and saturated liquid exits at the same temperature. The mass flow rate of refrigerant is 10 kg/min. Determine the quality of refrigerant at inlet of compressor,
Saturated vapor R22 refrigerant leaves the evaporator and enters the compressor at 131.68kPa. The refrigerant leaves the condenser as a saturated liquid at 40oC and enters theexpansion valve at 36oC. Heat rejected from the condenser amount to 105 kW. The work tothe compressor is 65 kJ/kg, while the heat loss from the compressor is 5.5 kJ/kg. A 7.4 kJkgof heat loss in piping between the compressor and condenser, Draw the p-h diagram(labeling the pressures and temperatures in each condition). Determine (a) the temperatureof refrigerant entering the condenser and (b) calculate the refrigeration capacity in tons.
A medium size power station is used to produce 30 MW net power for a refinery. The station uses steam as the operating fluid and operates according to the Carnot cycle between the pressure limits of 0.4 bar and 35 bar. Steam enters the boiler as a saturated liquid and leaves it as a dry saturated vapour. ist t Reneric o "nd h Ts diaar ntion of s) (ii) Determine the dryness fraction of the steam that is fed to the condenser. (4 marks) (iv) Determine the specific enthalpy values at the four key points of the cycle. (6 marks) Calculat "Fic of the cycle (5 Ma, KS) (vi) Determine the thermal efficiency of the cycle. (1 mark) (vii) Using the highest and lowest temperature values in the cycle, re- calculate the efficiency of the cycle and show that it is equivalent to the result in part (vi). (2 marks) arks). 2.
A8 A controlled-temperature storage room is maintained at the desired temperature by an R-134a refrigeration unit with evaporator and condenser temperatures of –20oC and 40oC respectively. Sketch a fully labelled-diagram of the cycle on pressure-enthalpy co-ordinates. Use the combination of tables and the superheated region for refrigerant R-134a to answer this question.
Q1.2 Consider a two-stage compression refrigeration system operating between the pressure limits of 0.8and0.14 MPa(see Fig. Q 2). The working fluid isrefrigerant -134a. The refrigerant leaves thecondenser as a saturated liquid and is throttled to aflash chamberoperating at0.4 MPa. Part ofthe refrigerant evaporates during this flashing process, and this vapour is mixed with the refrigerantleaving the low-pressure compressor. The mixture is then compressed to the condenser pressure bythe high-pressure compressor. The liquid in the flash chamber is throttled to the evaporator pressure,and it cools the refrigerated space as it vaporizes in the evaporator. Assuming the refrigerant leavesthe evaporator as saturated vapor and both compressors are isentropic, determine(a) the coefficient of performance (COP).Re-draw the schematic diagram and sketch the cycle accurately on a T-s diagram with the propertyvalues labelled at all state points.
Can you explain the process of this refrigeration and cryogenic plant for liquid oxygen production?
An ammonia ice plant produces ice from water at 30°C to ice at -5°C. It works on standard vapour compression cycle, dry saturated conditions at compressor inlet. The enthalpies at compressor inlet and condenser exit are 1443.9 kJ/kg and 366.1 kJ/kg. Mass flow rate of the refrigerant is 180 kg/h. The ice produced is. tons per day. Specific heat of water = 4.186 kJ/kgK; Specific heat of ice = 1.94 kJ/kgk Latent heat of water at 0°C = 335 kJ/kgK
can you please solve this for me (the fraction of steam extracted from theturbine for the open feedwater heater)
The evaporator (a heat exchanger) in an A/C unit has R-410A entering at -20 °C and a quality of 30% and leaves at the same temperature and a quality of 100%. The COP of the air conditioner is known to be 1.3 and the mass flow rate is given as 0.013 kg/s. Find the power input to the cycle. (Note that, here, the evaporator is the part of the A/C unit that accepts [i.e., withdraws] heat from the room maintained at a cold temperature)