Chiller Performance Measurement

Overview
The performance assessment of a chiller plant involves calculating the cooling capacity delivered by the system and measuring the power consumed by the unit. Key performance indicators such as Specific Power Consumption (SPC – kW/TR) and Energy Efficiency Ratio (EER) are used to evaluate the electrical energy input against the cooling output delivered by the system. At Limbaja Energy, we provide Chiller Audit Services in Gujarat for industries across Gujarat and India. Our Chiller Performance Assessment and Chiller Energy Audit Services include measuring critical parameters such as flow rate, temperature, and power on both the chilled water and refrigeration sides of the system. These assessments help improve chiller efficiency, reduce energy consumption, optimize HVAC performance, and lower operating costs.
Refrigeration Effect
Formula
- Refrigeration Effect (TR) = (Flow(Q) × Cp × (Ti – T0)) / 3024
Where:
- Q = Flow Rate m3/s
- Cp = Specific Heat kcal/kg deg C
- Ti = Inlet Temperature (Deg C)
- T0 = Outlet Temperature (Deg C)
Scope of Work
Case Study
Energy Conservation Measures
- Maintain the chiller Specific norms and reduce the chiller consumption by Overhaul of the Existing Chiller
Calculation
| SN | Parameter | Unit | Chiller |
|---|---|---|---|
| 1 | Actual Chiller Capacity Requirement | TR | 103.34 |
| 2 | Existing Specific energy consumption of screw chiller | kW/TR | 0.81 |
| 3 | Suggest Specific energy consumption of screw chiller | kW/TR | 0.70 |
| 4 | Specific Energy Consumption Saving | kW/TR | 0.11 |
| 5 | Power Saving | kW | 11.58 |
| 6 | Electrical unit cost | Rs/kWh | 9.57 |
| 7 | Daily working hour | hr | 24.00 |
| 8 | Annual Operating Day | Day | 330.00 |
| 9 | Annual Power Saving | kWh | 91693 |
| 10 | Annual Monetary saving | Rs | 877067 |
| 11 | Investment of Overhaul Water Cooled Screw chiller | Rs | 600000 |
| 12 | Simple Payback period | Month | 8.21 |
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