E A multi-stage vapour compression refrigeration cycle used an R717 as a working fluid. This cycle include a heat exchanger used a H₂O (water inter-cooler) for cooling the refrigerant and used the flash intercooler. The refrigeration capacity is 100 TR where operates in pressure limits of 23 bar to 3.3 bar, the refrigerant enters the compressor of low stage with 7 °C while the refrigerant leave the condenser with 6 °C degree of sup cool. The de-superheated refrigerant leaves the water inter- cooler at 39 °C. Draw the P-h and the component of cycle. Determine: 1-mass flow rate of refrigerant 2-power required, and 3-COP.

E A multi-stage vapour compression refrigeration cycle used an R717 as a working fluid. This cycle include a heat exchanger used a H₂O (water inter-cooler) for cooling the refrigerant and used the flash intercooler. The refrigeration capacity is 100 TR where operates in pressure limits of 23 bar to 3.3 bar, the refrigerant enters the compressor of low stage with 7 °C while the refrigerant leave the condenser with 6 °C degree of sup cool. The de-superheated refrigerant leaves the water inter- cooler at 39 °C. Draw the P-h and the component of cycle. Determine: 1-mass flow rate of refrigerant 2-power required, and 3-COP.

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 reheat-regenerative rankine cycle needs to produce 150MW of net power. Boiler pressure is at 15MPa. Reheat occurs at 10MPa. extractions occur at 5MPa and 2MPa for open feedwater heaters. These extractions occur after the expansion after reheating. Steam leaves the boiler and reheater at 600C. Condenser pressure is at 10kPa. SOLVE FOR: a.) Determine the amount of steam needed passing through the boiler to produce the required net power (kg/s) b.) Determine the amount of heat added to the system (kJ/s) c.) Determine the thermal efficiency of this cycle (%) PLS PLS USE THE ATTACHED IMAGE OF THE STEAM TABLE FOR THE VALUES FOR ENTHALPHYS ANSWERS ROUND OFF TO SIG SIGNIFICANT FIGURES
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.
n industrial plant generates its own power thru heat transfer and mechanical work, from heat energy generator and turbo generator set. A bagasse fired 60 tonner water tube boiler generating 335 psi. And 330°C superheated steam. Condensates at 90°C feedwater absorbing heat at the deaerator and preheater by as much as 3 592 446 KJ/hr that supplies the steam drum at a rate of 10% higher than the steam generated. Tons steam per ton cane is 2. Superheated steam at a velocity of 25 m/sec is supplied to an impulse turbine that drives a generator producing electrical energy. Exhausted heat energy at a velocity of 20 m/sec, before undergoing heat condensations is at 800 KJ/kg.Determine the following:The Boiler Thermal Efficiency
A steam power plant operates between a boiler pressure of 48 bar and a condenser pressure of 0.04 bar Calculate for these limits the cycle efficiency for a Camot cycle using wet steam NB Answer in decimal and not percentage to 4 decimal places.
a commercial refrigerator using isobutane (r600a) operates on the simple saturation cycle with saturated suction and discharge temperature of "-25" °c and 55 °c respectively: (a) calculate the cop and power required to run the compressor per ton of refrigeration. (b) if the liquid is subcooled by 10 °c in the condenser, calculate the cop and power required to run the compressor per ton of refrigeration.
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.
Q.8 In a regenerative steam cycle employing one open feed heater, the steam is supplied to the turbine as dry saturated at 40 bar, and exhausted to the condenser at 0.35 bar. The intermediate bleed pressure is 10 bar. Sketch the layout of the plant and show on the temp | entropy diagram the pressure under gone by the steam, neglecting the pump works, calculate: A. The mass of steam bled from the turbine per Kg of steam leaving the boiler. B. The thermal efficiency of the plant. C. The thermal efficiency of the plant without feed heating. D. The heat rate in (kJ/kW.hr) for the plant with and without feed heating.
3. have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°F. For standard vapor compression cycle An air compression refrigeration system is to temperatures of 77°F entering the expansion cylinder and 14 F entering the compression cylinder, calculate the coefficient of performance C. 4.0 D. 5.0 A. 2.5 B. 3.3
3) A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 28 kW of refrigeration at -45°C. The R12 system operates at -12°C evaporating temp and 40°C condensing temp. There is a 10° overlap of temperatures in the cascade condenser. Calculate the power required by R22 compressor, and the power required R12 compressor.
Ideal vapor-compression refrigeration cycle functions at steady state. Working fluid is Refrigerant 134a. Saturated vapor enters compressor at 1.70 bar. Saturated liquid leaves condenser at 7 bar. Refrigerant has mass flow rate = 7.9 kg/min DETERMINE: 1. What is power of compressor in Watt? 2. What is coefficient of performance? 3. What is refrigerating capacity in tons?
Steam at 10 MPaa, 550 degrees celsius enters an ideal engine that has one stage of regenerative cycle; condenser pressure is 10kPaa and extraction of steam is at 1 MPa. Compute the following 5. Steam rate
In a system one evaporator is to provide 180 kW of refrigeration at -30C and another evaporator is to provide 200 kW at 5C. the condenser temperature is 40C. The system uses 2 – stage compression with intercooling and is arranged as in figure. Calculate the power required by the compressors.