CHILLER PERFORMANCE – CALCULATION SHEET Given Data Cooling Capacity = 2,400 kW (= 8,189,138 BTU/hr) Electrical Power Input = 850 kW 1. Coefficient of Performance (COP) Formula: COP = Cooling Effect (kW) / Power Input (kW) Calculation: COP = 2,400 / 850 COP = 2.82 2. Energy Efficiency Ratio (EER) Method 1: Using COP Formula: EER = 3.412 × COP Calculation: EER = 3.412 × 2.82 EER = 9.6 Method 2: Using BTU/hr Formula: EER = Cooling Capacity (BTU/hr) / Power Input (W) Calculation: EER = 8,189,138 / 850,000 EER = 9.6 Method 3: Using kW/TR Cooling Capacity = 2,400 kW = ≈ 682 TR kW/TR = 850 / 682 = 1.24 Formula: EER = 12 / (kW/TR) Calculation: EER = 12 / 1.24 EER = 9.6 Final Results COP = 2.82 kW/TR = 1.24 EER = 9.6 Key Takeaway All three calculation methods yield the same EER value of 9.6, confirming that the chiller performance calculations are accurate, consistent, and reliable. Activate to view larger image,
Gul Bahar Shah
Gul Bahar Shah
CHILLER PERFORMANCE – CALCULATION SHEET
Given Data
Cooling Capacity = 2,400 kW
(= 8,189,138 BTU/hr)
Electrical Power Input = 850 kW
1. Coefficient of Performance (COP)
Formula:
COP = Cooling Effect (kW) / Power Input (kW)
Calculation:
COP = 2,400 / 850
COP = 2.82
2. Energy Efficiency Ratio (EER)
Method 1: Using COP
Formula:
EER = 3.412 × COP
Calculation:
EER = 3.412 × 2.82
EER = 9.6
Method 2: Using BTU/hr
Formula:
EER = Cooling Capacity (BTU/hr) / Power Input (W)
Calculation:
EER = 8,189,138 / 850,000
EER = 9.6
Method 3: Using kW/TR
Cooling Capacity = 2,400 kW = ≈ 682 TR
kW/TR = 850 / 682 = 1.24
Formula:
EER = 12 / (kW/TR)
Calculation:
EER = 12 / 1.24
EER = 9.6
Final Results
COP = 2.82
kW/TR = 1.24
EER = 9.6
Key Takeaway
All three calculation methods yield the same EER value of 9.6, confirming that the chiller performance calculations are accurate, consistent, and reliable.
Cooling Capacity = 2,400 kW
(= 8,189,138 BTU/hr)
Electrical Power Input = 850 kW
1. Coefficient of Performance (COP)
Formula:
COP = Cooling Effect (kW) / Power Input (kW)
Calculation:
COP = 2,400 / 850
COP = 2.82
2. Energy Efficiency Ratio (EER)
Method 1: Using COP
Formula:
EER = 3.412 × COP
Calculation:
EER = 3.412 × 2.82
EER = 9.6
Method 2: Using BTU/hr
Formula:
EER = Cooling Capacity (BTU/hr) / Power Input (W)
Calculation:
EER = 8,189,138 / 850,000
EER = 9.6
Method 3: Using kW/TR
Cooling Capacity = 2,400 kW = ≈ 682 TR
kW/TR = 850 / 682 = 1.24
Formula:
EER = 12 / (kW/TR)
Calculation:
EER = 12 / 1.24
EER = 9.6
Final Results
COP = 2.82
kW/TR = 1.24
EER = 9.6
Key Takeaway
All three calculation methods yield the same EER value of 9.6, confirming that the chiller performance calculations are accurate, consistent, and reliable.
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