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CHILLER PERFORMANCE – CALCULATION SHEET

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. Activate to view larger image,
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Working Principle of a Chiller Plant

Gul Bahar Shah
  Working Principle of a Chiller Plant 🔹 A chiller plant is used to remove heat from a building and maintain the required indoor temperature. It operates using two separate water circuits: the chilled water circuit and the condenser water circuit. Main Equipment & Their Functions ▪ Chiller (Evaporator & Condenser) The evaporator absorbs heat from the chilled water, thereby reducing its temperature. The condenser rejects the absorbed heat from the refrigerant to the condenser water. ▪ Chilled Water Pump & Condenser Water Pump The chilled water pump circulates chilled water between the chiller evaporator and the AHUs/FCUs. The condenser water pump circulates condenser water between the chiller condenser and the cooling tower. ▪ Air Handling Unit (AHU) The AHU cools the indoor air by passing it over a chilled water cooling coil. Heat from the air is transferred to the chilled water, causing the water temperature to rise before returning to the chiller. ▪ Cooling Tower The...
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Chilled Water System Sequence of Operation (Chiller to AHU / FCU)

Gul Bahar Shah
  Chilled Water System – Sequence of Operation (Chiller to AHU / FCU) 1. System Enable / Start Command The chilled water system is enabled by BMS, time schedule, or manual command. Interlocks such as power availability, system alarms, and safety controls are checked before start-up. 2. Chilled Water Pump Operation Upon system enable, the chilled water pump starts. Pump status and differential pressure are monitored by BMS. Flow is established through the chilled water loop, including piping, valves, and terminal units. 3. Chiller Start-Up Once minimum chilled water flow is proven (via flow switch or DP sensor), the chiller is permitted to start. The chiller operates to maintain the chilled water supply temperature setpoint (typically 6–7°C). Chiller loading/unloading is controlled based on return water temperature and system demand. 4. Chilled Water Distribution Chilled water is supplied from the chiller evaporator to: AHUs (large air-handling units) FCUs (fan coil units) Distribut...
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Latest Water Treatment Technologies

Gul Bahar Shah
  Latest Water Treatment Technologies Latest water treatment technologies focus on advanced membranes (RO, NF, UF), Advanced Oxidation Processes (AOPs) for emerging contaminants, bio-based remediation, smart monitoring (IoT, AI), and photocatalysis (UV/TiO2) for chemical breakdown, with a strong trend towards decentralized, energy-efficient systems like Membrane Bioreactors (MBRs) and Zero Liquid Discharge (ZLD) (ZLD) for sustainability. Key innovations include UV-driven PFAS destruction, ceramic membranes, and electrochemical methods to tackle complex pollutants like pharmaceuticals, microplastics, and PFAS Activate to view larger image,
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