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Rate of heat transfer to evaporator from the chilled water: Answer : 0.627 kW ✓ Rate of heat transfer from condenser to the cooling water: Answer : 0.81kW✓ Rate of heat transfer to refrigerant in “Evaporator” using enthalpy values:

Rate of heat transfer to evaporator from the chilled water: Answer : 0.627 kW ✓ Rate of heat transfer from condenser to the cooling water: Answer : 0.81kW✓ Rate of heat transfer to refrigerant in “Evaporator” using enthalpy values:

Elements Of Electromagnetics
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
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Given the table of results, find the following. Give answers in KW.

Please use tables and state which table you used

Please show all working out

  1. Rate of heat transfer to evaporator from the chilled water: Answer : 0.627 kW ✓
  2. Rate of heat transfer from condenser to the cooling water: Answer : 0.81kW✓
  3. Rate of heat transfer to refrigerant in “Evaporator” using enthalpy values:
  4. Rate of heat transfer from refrigerant in “Condenser” using enthalpy values
  5. Work input from the compressor to the refrigerant using enthalpy values. Answer:  0.470kW ✓
  6. COP from enthalpy changes across work input and evaporator
  7. COP from motor electrical power input as work and rate of heat transfer to the chilled water 
Parameters Measured values Units Following experimental data is for R134a Press. compressor inlet (P1) 307.828 Absolute Pressure kPa Press. compressor outlet (P2a) 877.828 Absolute Pressure kPa Press. before exp. valve (P3) 862.889 Absolute Pressure kPa Press. after exp. valve (P4) 317.896 Absolute Pressure kPa Temp. after evap. (TI) 5.35 °C Temp. before condenser (T2a) 68 °C Temp. after condenser (T3) 32.4 °C Temp. after exp. Valve (T4) 2.25 °C Refrigerant flow rate ( d 0.58 kg/min Following experimental data is for Water that is getting chilled or heated Temp. into condenser (T.) 25 °C Temp, out of condenser (T) 40 °C Temp. into evaporator (T.) 31 °C Temp. out of evaporator (T) 19 °C Condenser water flow rate ( 0.77 kg/min Evaporator water flow rate 0.75 kg/min Compressor supply electrical 450 power Barometric reading 761 mm Hg
Transcribed Image Text:Parameters Measured values Units Following experimental data is for R134a Press. compressor inlet (P1) 307.828 Absolute Pressure kPa Press. compressor outlet (P2a) 877.828 Absolute Pressure kPa Press. before exp. valve (P3) 862.889 Absolute Pressure kPa Press. after exp. valve (P4) 317.896 Absolute Pressure kPa Temp. after evap. (TI) 5.35 °C Temp. before condenser (T2a) 68 °C Temp. after condenser (T3) 32.4 °C Temp. after exp. Valve (T4) 2.25 °C Refrigerant flow rate ( d 0.58 kg/min Following experimental data is for Water that is getting chilled or heated Temp. into condenser (T.) 25 °C Temp, out of condenser (T) 40 °C Temp. into evaporator (T.) 31 °C Temp. out of evaporator (T) 19 °C Condenser water flow rate ( 0.77 kg/min Evaporator water flow rate 0.75 kg/min Compressor supply electrical 450 power Barometric reading 761 mm Hg
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