How do you maintain a chiller plant?

Ten Tips for Commercial Chiller Maintenance

  1. Keep a daily log.
  2. Keep tubes clean for efficient heat transfer.
  3. Treat condenser water to prevent scale, corrosion.
  4. Lower entering water temperature.
  5. Keep chilled water flow rate between 3 to 12-ft per second.
  6. Maintain adequate refrigerant charge.

What is chiller maintenance?

Chiller maintenance is the process of regularly inspecting commercial or industrial chillers to extend equipment life and maintain optimum efficiency. While chiller maintenance vary per type of chiller—reciprocating, centrifugal, screw, and scroll—preventive chiller maintenance should also be carried out.

What is chiller safety?

Controls for chiller safety. A chiller usually consists of a compressor. The safety controls are designed to protect the cooling system from harm because of low temperature, oil pressure, or high pressure.

Which gas is used in chiller plant?

R717 Ammonia This is the most popular refrigerant used in chiller plants. It has the highest heat absorption rating which makes it ideal for use in smaller, portable chiller units negating the need for large cooling plants. Other benefits of using ammonia as chiller refrigerant are its stable thermal properties.

How do you maintain a chiller efficiency?

Top 10 Techniques to Maintain High Efficiency Chiller..

  1. Keep a daily log.
  2. Keep tubes clean for efficient heat transfer.
  3. Treat condenser water to prevent scale, corrosion.
  4. Lower entering water temperature.
  5. Keep chilled water flow rate between 3 to 12-ft per second.
  6. Maintain adequate refrigerant charge.

How to improve Chiller efficiency?

– The chilled water pumps will increase in speed for variable volume systems, to meet the cooling load. – The cooling coils are often used for humidity control. – Check if the chiller manufacturer recommends any temperature and pressure limits for the water or refrigerant.

How to maintain a chiller?

Turn off the water source of the chiller,and clean the unit components and the water in the pipes to prevent the unit components from being corroded by water

  • Clean the fan of the air-cooled chiller and keep it clean,which can be blown with an air gun.
  • Whether there are impurities in the evaporator water tank,and clean it.

    • How to lift a chiller?

    – Orifice plate – Float valves – Thermal expansion valve – Electronic expansion valves – Pilot operated thermal expansion valves

    How to calculate cooling capacity of a chiller?

    – ΔT°F = 72°F – 58°F = 14°F – BTU/hr. = 10 gpm x 60 x 8.33 x 14°F = 69,972 BTU/hr. – Ton Capacity = 69,972 BTU/hr. ÷ 12,000 = 5.831 Tons – Oversize the chiller = 5.831 x 1.2 = 6.9972 – A 6.9972 or 7-Ton chiller is required