please anwser task 2 Mollier or Pressure/enthalpy charts is another alternative to obtain a quick and initial performance estimation ofrefrigeration/heat pump cycles used in heating, ventilation and air-conditioning (HVAC) system. Your role in acompany that provide design and installation services for air -conditioning (AC) system is provide preliminaryperformance estimation. You have been given the following design specifications:The system design specifications are as follows:Refrigerant HFC-134a as the working fluidIdeal cycle operation condition is assumedCycle is operated at high pressure line of 0.8 MPaCycle is operated at low temperature line of – 10° C- Flow rate is 0.05 kg/secYour manager asked you to make use of pressure/enthalpy chart provided for HFC-134a refrigerant in theAppendix.A to estimate the following:Task.11. Construct TS-plot.2. Refrigeration effect (RE), heat of compression (HOC), and heat of rejection (HOR) and theircorresponding rate/power values.3. Estimate the COPR and COPHP4. Determine the low-pressure line value.Task.21. Construct didactic sketches, showing the operating principles of both heat pumps and refrigerationsystems2. Estimate the reversible COP values, if the low and high medium temperature are as for the evaporatorand condenser.

Refrigerant= HFC-134a High pressure line = 0.8 MPa Low pressure line = -10oC Refrigerant mass flow…

Construct didactic sketches, showing the operating principles of both heat pumps and refrigeration systems Estimate the reversible COP values, if the low and high medium temperature are as for the evaporator and condenser.

Construct didactic sketches, showing the operating principles of both heat pumps and refrigeration systems Estimate the reversible COP values, if the low and high medium temperature are as for the evaporator and condenser.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.8P

See similar textbooks

Related questions

Q: A refrigeration system with a capacity of 10 tons of refrigeration, operates at 210 kPa evaporator,…

Q: 1. A two-stage vapour compression refrigeration system with a direct contact heat exchanger (flash…

Q: A refrigeration system with a capacity of 10 tons of refrigeration, operates at 210 kPa in the…

A: Given: The refrigeration capacity, R = 10 ton of refrigeration = 35 kW The evaporator pressure, P1 =…

Q: 5. A refrigerator with tetrafluoroethane as refrigerant operates with an evaporation temperature of…

Q: Given the following: a. In order to increase the COP of the heat pump, what recommendations or…

A: (a) In order to increase the COP of the heat pump :- (1) The COP of a heat pump system can be…

Q: A simple vapour compression refrigeration cycle using R-12 is designed for taking a load of 10…

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: 1. Assess the limiting factors that impact on the economics of heat pumps. As an example, consider…

Q: Why Power consumption per ton of refrigeration_with wet compression is less as ompared to dry…

Q: Discuss the difference between a heat engine and a refrigerating machine. Also explain in detail…

Q: Discuss the advantages of using multi-stage refrigeration cycle for large industrial applications.

A: When two or more compressor numbers are connected in a series with an intercooler in the middle of…

Q: Estimate the maximum possible COP of a household air conditioner. Use any reasonable values for the…

A: Let us assume that the air conditioner is set to maintain a temperature of 20°C inside the room…

Q: An ammonia compressor operates at an evaporator pressure of 316 kPa and a condenser pressure of…

A: Evaporator pressure=316kPaCondenser pressure=1514.2kPASubcooled at 5°Superheated at 8°'Stroke…

Q: 2. A refrigeration system with a capacity of 10 tons of refrigeration, operates at 210 kPa in the…

Q: A refrigerator is designed with a turbine instead of a throttle. What would you expect to happen to…

Q: A standard ammonia vapour compression cycle developing 20 tons of refrigeration operates with a…

A: RC=20 tonRC= 20×3.5=70 KwTL=-14 ° CTH=32 °C

Q: A vapor compression cycle using Ammonia as refrigerant operates at an evaporating temperature of -5…

Q: Schematic diagram of a Simple Vapor Compression System is shown that uses refrigerant R-134a for…

Q: The performance of a refrigeration system is measured and found to have a COP of 2.5. The…

Q: A refrigerator with Freon 11 as the working fluid is considered. Given the data below, compute the…

A: Given, T1 = -22oC from Table ; h1 = 385.32 kJ/kg s1 = 1.743 kJ/kg.K P2 = 1 MPa From steam table; s2…

Q: (iii) If a parabolic trough concentrator system generates steam at 310°C and ejects water at 45°C,…

A: Given data, Steam generated temperature or maximum temperature, Tmax = 310+273=583 K Rejected…

Q: A six 67 x 57 mm refrigerant 22 compressor operating at 30 rps indicate a refrigerating capacity of…

Q: A heat exchanger is incorporated into an ideal air-standard refrigeration cycle, as shown in figure.…

Q: Calculate the coefficient of performance of an ideal vapor-compression refrigeration cycle R-134a as…

Q: Part C A surface condenser is required to condense 30,000 kg of dry steam per hour at a pressure of…

A: Given, Mass flow rate of steam, ms = 30000 Kg/hr = 8.33 kg/s Pressure and temperature of steam ,…

Q: A heat pump has a coefficient of performance of 3.1 in heating mode. If it requires 130 J of work…

Q: QI (ii) Figure QI (ii) a residential heat pump plant has a coefficient of Performance 2.4. Calculate…

Q: Evaluate the co-efficient of performance and heat transfer rate in the condenser of a refrigerator…

A: COP stands for Coefficient Of Performance and indicates the efficiency of heating and cooling…

Q: Construct didactic sketches, showing the operating principle When you select a refrigerant for a…

Q: Design Ideal Vapour Compression refrigeration cycles for two different refrigerant and compare their…

A: For design of ideal vapor compression refrigeration system we consider R-134a and R-717(Ammonia) as…

Q: 6.3 A food storage chamber requires a refrigeration system of 15-ton capacity operating at an…

A: To determine: COP Refrigerant flow rate Rate of…

Q: Calculate the coefficient of performance of Carnot cycle refrigerator operating between -5ºC and…

Q: Draw the block diagram and determine the COP of a 2-stage refrigeration system with flash gas…

A: given; ⇒take;⇒X=7⇒Y=8⇒refrigeration effect (RE)=6X KW =6*7…

Q: 320K 1000 K Q42 w (350kJ) 283K 300k

Q: 6.7 A refrigerated room, used for product cooling, is being maintained at the desired temperature…

A: Solution: T1=T4=273 KP2=P2'=P3=900 kPa Point 1 is saturated vapor at 0° C : h1=250…

Q: PROBLEM 1.O A standard vapor compression system produces at 24 Tons of Refrigeration using R-22 as a…

A: As given that TL=-17.3 °C , TH=38.5 °C ;Refrigeration R-22 , Refrigeration capacity = 24 tons=…

Q: A vapor compression cycle using Ammonia as refrigerant operates at an evaporating temperature of -5…

Q: A refrigeration system employs R12 is used for a domestic heating unit. The The capacity of the…

Q: 9. An ammonia vapour-compression refrigerator has a single-stage, single-acting reciprocating…

A: Refrigerator is a device used to produce cooling by dissipating heat in the form of fluid or…

Q: A refrigerator in a meat warehouse must keep a low temperature of -20°C and the outside temperature…

A: The enthalpy of the stream exiting the evaporator is h1 = 1438 kJ/kg. The enthalpy of the stream…

Q: Compre stage Q2- Find the coefficient of performance for the fallowing cycle and coefficient of…

A: Given:T1=50°CT2=-20°CT3=-40°C

Q: 5.18 : Taking the data of the preceding problem except the final temperature of the cooling water is…

A: In jet condenser, water mixes with steam and the temperature of water and condensate will be same.…

Q: Explain the condenser coils of a refrigerator must be cleaned periodically, and the airflow passages…

A: Dirty condenser coils not only increase energy use and force the appliance to work harder, but they…

Q: An ideal refrigeration cycle that has a condenser temperature of 25°C and an evaporator temperature…

Q: A standard vapour compression cycle developing 40 kW of refrigeration using refrigerant 134a…

Q: Used to cool a residential building with a cooling load (278 tons of refrigeration from…

A: Given data:-Refrigeration Capacity, RC=278tonsEvaporator temperature, TE=5°C=278KGenerator…

Q: A vapor-compression refrigeration system operates on the cycle and the refrigerant is water. Given…

Q: Schematic diagram of a Simple Vapor Compression System is shown that uses refrigerant R-134a for…

Concept explainers

Types of loading

In mechanical terminology, the term load indicates that external force/weight, either constant or variable, acts on a mechanical member/structure. The weight of an object of a specific material is also an external load, and the external force that works on a structure comes under the categories of loading. The external load generates its effects as stress and strain in the structure.

Question

please anwser task 2

Mollier or Pressure/enthalpy charts is another alternative to obtain a quick and initial performance estimation of
refrigeration/heat pump cycles used in heating, ventilation and air-conditioning (HVAC) system. Your role in a
company that provide design and installation services for air -conditioning (AC) system is provide preliminary
performance estimation. You have been given the following design specifications:
The system design specifications are as follows:
Refrigerant HFC-134a as the working fluid
Ideal cycle operation condition is assumed
Cycle is operated at high pressure line of 0.8 MPa
Cycle is operated at low temperature line of – 10° C
- Flow rate is 0.05 kg/sec
Your manager asked you to make use of pressure/enthalpy chart provided for HFC-134a refrigerant in the
Appendix.A to estimate the following:
Task.1
1. Construct TS-plot.
2. Refrigeration effect (RE), heat of compression (HOC), and heat of rejection (HOR) and their
corresponding rate/power values.
3. Estimate the COPR and COPHP
4. Determine the low-pressure line value.
Task.2
1. Construct didactic sketches, showing the operating principles of both heat pumps and refrigeration
systems
2. Estimate the reversible COP values, if the low and high medium temperature are as for the evaporator
and condenser.

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

Given

VIEW

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 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

Refrigerators currently being manufactured in the United States are using______as their refrigerant.
The function of the pressure tank in an open-loop, geo-thermal heat pump well system is to prevent the well pump from _____.
Geothermal heat pumps, or water-source heat pumps, are classified as either _____loop or _____loop systems.
Condensers in these refrigerators are all_______cooled.
Referring to Problem 1.74, how many kilograms of ice can a 3-ton refrigeration unit produce in a 24-h period? The heat of fusion of water is 330 kJ/kg.
Thermodynamics Answer the following problem with complete solutions. Write legibly Refrigerant HFC-134a is ideally throttled from an enthalpy of 480 kJ/kg at the evaporator pressure of 0.20 MPa to a pressure of 0.02 MPa. What is the final enthalpy?
a freon 12 vapour compression system operating at a condenser temperature of 40 degree centigrade and an evaporative temperature of 0 degree centigrade develops 15 tons of refrigeration. using P-H diagram for freon 12, determine, a. the discharge temperature and mass flow rate of the refrigerant circulated, b. the teoretical piston displacement of the condenser and piston displacement per ton of refrigerant c. the theoretical horsepower of the compressor and horsepower per ton of the refrigerant d. the heat rejected in the condenser, and e. the Carnot COP and actual COP of the cycle.
For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASE thanks
For air properties use online source: https://www.peacesoftware.de/einigewerte/luft_e.html The compressor is operating at steady-state increasing pressure of R-22 refrigerant from 4 bars to 14 bars. Temperature was rising during the process from 12C to 90C. The inlet volumetric flow rate is 1 m3/min and inlet diameter is 0.03m. At the exit the diameter is the same. Heat flow to the surroundings can be neglected. Determine: a.Mass flow rate [kg/s] SHOW AND EXPLAIN ALL STEPS PLEASE
Engineer CoolAir is working on designing an air conditioning unit that handles the combined air flow from two food processing rooms with the following quantities: 4000 ft^3/ min at 80° F wet bulb and 50% saturated; 3000 ft^3/min at 70° F dry bulb and 65°F wet bulb temperatures. (a) What is the total mass flow rate? (b) What is the dry bulb temperature? (c) what is the wet bulb temperature?
Atmospheric air at 40°C dbt and 55% RH is passed over a cooling coll at the rate of 600 m/mint. At exit from coil the air is saturated and its temperature is 8°C. The condensate also leaves at 8°C. Determine the amount of condensate leaving coll per minute and refrigeration in kW. The specific heat of superheated steam may be assumed to be 1.88 kJ/kg-K. Solve the problem without psychromatic chart.
Water vapor with a flow rate of 20000 kg / h enters the condenser of a power plant at a pressure of 20 kPa and a dryness degree of 95 percent. In the condenser, there is heat transfer to the river water flowing through the pipes. The temperature rise of the river water is limited to 10 C to prevent thermal pollution. Since the state of the water at the condenser outlet is saturated liquid at 20 kPa pressure, what should be the flow rate of the cooling water.