Fundamentals Of Thermodynamics
10th Edition
ISBN: 9781119494966
Author: Borgnakke, C. (claus), Sonntag, Richard Edwin, Author.
Publisher: Wiley,
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REFRIGERATION ENGINEERING
USE SHAPIRO AND MORAN STEAM TABLES
The refrigeration system of a food production firm is run using the Reversed Carnot Cycle. The temperature of the hot refrigerant supply in the system should be 52°C, while the temperature of the sink should be -14°C. Its capacity is projected to be at least 24 tons. It's important not to disregard losses.
Find and Show unit analysis and conversion:
a. COP and COP of Heat Pump
b. Heat rejected from the system in kW
c. Network in, Hp and Energy Efficiency Ratio
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- Determine the compressor work, W,comp. And the condenser heat transfer, Qc.arrow_forwardShow whole Solution (Unit of Conversion)arrow_forwardThe condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 1 kg/sec of steam when the steam at the beginning of expansion is at 119.6 deg SH and 4.0 Mpaa. Draw the TS and equipment diagrams for the ideal and actual case and find for the following for the ideal case: Pump work in KW. Ans. Ideal heat rate in KJ/KW-hr. Ans. Rankine engine efficiency (%). Ans. Cycle thermal efficiency ( %). Ansarrow_forward
- Find the thermal efficiency of the system in percentage to 2.d.p.arrow_forwardQ3// Answer A or B All The plant capacity factor of power plant 50%, the peak load is 30MW, the load factor is 60% and plant use factor 80%. Find: the daily output power and the plant reserve capacity. B// What are the methods of draught in cooling towers. Demonstrate them with drawings. What is the relationship between the cooling tower and condenser.arrow_forwardAn R22 system has compression raito of 4:9:1 NRE of 72 btu/pd , heat compression of 18 btu/ pd and constant volume of 1.4 cfm at inlet to the compressor . what's the displacement of compressor for 1 ton of refrigerant.arrow_forward
- Present step by step solution. If EB in to be used, start in System Under Study, then, Fluid Under Study, and draw BED.arrow_forwardNote : Use the relevant chart for each problem 3. A vapour compression refrigerator uses R-12 as refrigerant and the liquid evaporates in the evaporator at - 15 °C. The temperature of this refrigerant at the delivery from the compressor is 15°C when the vapour is condensed at 10°C. Find the coefficient of performance if (i) there is no undercooling , and (ii) the liquid is cooled by 5°C before expansion by throttling. Take specific heat at constant pressure for the superheated vapour as 0.64 kJ/kg.K and for liquid as 0.94 kJ/kg.K. (Same as Example 12) Please solve the question on a piece of paper and using tables with illustrationsarrow_forward2.2 A reversed Carnot cycle has a COP for cooling of 4. Determine the tempera- ture ratio TĮT,. If the power consumption of the cycle is 7.5 kW, determine the refrigerating capacity of the machine in TR. If the cycle is used as a heat pump with the same ratio of temperatures, deter- mine its COP for heating and the quantity of heat pumped.arrow_forward
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