100 ton of vapor compression refrigeration system using R-134a the vapor entering the evaporator at 2 bar and entering the condenser at 10 bar, the pressure drops in suction valve and discharge valve equal to 0.25 bar and 1.0 bar respectively. assume the refrigerant leaving the evaporator and condenser at saturated line find: (1) Refrigeration Effect (2) Power required in compressor (3) Actual COP of the cycle (4) Ideal COP of the cycle

100 ton of vapor compression refrigeration system using R-134a the vapor entering the evaporator at 2 bar and entering the condenser at 10 bar, the pressure drops in suction valve and discharge valve equal to 0.25 bar and 1.0 bar respectively. assume the refrigerant leaving the evaporator and condenser at saturated line find: (1) Refrigeration Effect (2) Power required in compressor (3) Actual COP of the cycle (4) Ideal COP of the cycle

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

Similar questions

(a) Figure 3 shows a refrigeration system using Refrigerant-134a as the refrigerant has a compressor that consumes 800 W of power when operational. The refrigerant enters the evaporator at 100 kPa as saturated mixture of quality 25% and leaves the condenser the same pressure as at a temperature of -26°C. Determine the rate of heat rejected (Q.) at the condenser and the COP of the refrigerator. The mass flow rate of the refrigerant is 0.005 kg/s. condenser expansion compressor valve evaporator Figure 3: Refrigeration system (b) After graduation, you decided to work overseas to experience living in a country with four seasons. Your neighbour, knowing that you are an engineer asked your help to install a heat pump system for his house. He wanted to always maintain the temperature in his house at 24°C during winter. In that area during winters, average outside temperature is -3°C. He also has an underground water well with average water temperature of 10°C during winter. You estimated that…
A refrigerant system with a capacity of 15 tons of refrigeration operates at 150 KPA evaporator while in the condenser is 1520 KPA if the refrigerant R-717 is in a saturated state calculate the theoretical power required to operate the compressor.
In a refrigerant 12 system which serves a 250 kw evaporator at -30°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. h2 = 357 kJ/kg, h4 = 365 kJ/kg Compute the ff:- mass flow rate at low stage compressor (m1), answer must be in kg/s- mass flow rate at high stage compressor (m3), answer must be in kg/s- low stage compressor work, answer must be in kw
Condenser pressure is 1200 kPa, Intermediate pressure 500 kPa and evaporator pressure 200 kPa, T7 = 40 Celsius degree, system cooling load QL = 25kW, compressor isentropic efficiency 0.8. Condenser outlet is saturated liquid, evaporator outlet is saturated steam. Draw the T-s diagram, please.
Its urgent
13. A food storage locker requires a refrigeration system of 2500 kJ/min capacity at an evaporator temperature of – 10°C and a condenser temperature of 30°C. The refrigerant used is Freon-12 and sub-cooled by 5°C before entering the expansion valve and vapour is superheated by 6°C before leaving the evaporator coil. The compression of refrigerant is reversible adiabatic. The refrigeration compressor is two-cylinder single- acting with stroke equal to 1.3 times the bore and operates at 975 r.p.m. Determine (using thermodynamic tables of properties for Freon-12): (i) Refrigerating effect per kg. (ii) Mass of refrigerant to be circulated per minute. (iii) Theoretical piston displacement per minute. (iv) Theoretical power required to run the compressor, in kW. (v) Heat removed through the condenser per minute. (vi) Theoretical bore and stroke of compressor. Properties of Freon-12 Saturation Absolute Enthalpy Entropy Specific volume of temp. pressure Liquid kJ/kg Vapour kJ/kg °C vapour…
A refrigeration system with a capacity of 15 tons of refrigeration, operates at 150 kPa in the evaporator, while the condenser is 1520 kPa. If refrigerant R-717 is saturated, calculate the theoretical power required to operate the compressor. Compressor Power Answer = kW.
6.1) A boiler produces 25 kg/s of steam at 3 MPa and 600 °C, cools the condenser with seawater so that the outlet is at 45 °C, then a reheating at 500 kPa up to 400°C is carried out, then a low-pressure expansion is carried out in the turbine. Determine: A) The net power output B) The total heat transfer in the boiler Boiler Pump www اپنا Be Turbine Condenser آلفا Ans= A) 34820 kW B) 91733 kW
Example 2: Refrigerant R-134a enter the compressor of a has a refrigerantor a superheared vapor at 0.14MPa and -10°C at arate of 0.05kg/sec and leave at 0.8Mp and 50°C.The refrigerant cooled in the condenser to 26°C and 0.72Mpa is throttled to 0.15MPa.Disregradingany heat transfere and pressure drop in the connecting line between the components. Determine: a) The rate of heat removed from the refrigerated space b) The power input to the compressor. c) Isentropic eff of the compressor d) COP of the refrigerantor.
The evaporator and condenser is isobaric with a net heat transfer 250 W in a vapor-compression refrigeration cycle. The cycle operates with R-134a working fluid at a steady state. The compressor's isentropic efficiency is at 60% with a high pressure of 16 bar and low pressure of 1 bar during the cycle. Solve for the mass flow rate, coefficient of performance, and draw the T-s diagram.
An ideal vapor compression cycle operates between the temperature limits of -5 °c and 30 °C and uses R134a as the refrigerant, which flows at a rate of 0.6 kg/s. The P-h- as well as T-s-diagrams that illustrate the refrigerating process is given in diagram, and respectively. Refigerant is compressed to the state in the compressor and heat is rejected in the condenser at constant for ideal Vapour compression cycle.
In a R-134a based refrigeration system the cycle operates in the temperature range of 40°c and - 20°c. Find COP of the system if the vapor is dry and saturated .hile entering the compressor. Assume mass flow rate of refrigerant is 1 kg/s.