How does a steam driven chiller work?
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How does a steam driven chiller work?
Steam-turbine-driven chillers are centrifugal vapor-compression chillers, using steam as the motive energy. The basic components are similar to an electric centrifugal vapor-compression chiller: namely, the evaporator, refrigerant condenser, compressor and the refrigerant-metering device.
How does a centrifugal chiller work?
A centrifugal chiller uses the vapor compression cycle to chill water. It throws off the heat collected from the chilled water plus the heat from the compressor to a water loop. The water loop is cooled by a cooling tower. Centrifugal chillers are popular because they have relatively few moving parts.
What is steam absorption chiller?
Absorption Chiller Steam Type is an eco-friendly and economical solution that uses thermal heat sources from nearby power plants instead of using electricity.
What is a York chiller?
With a wide range of types, capacities and sustainable refrigerant options, YORK® is a leader in air-cooled chiller solutions. We engineer compact, energy-efficient chillers that are easy to maintain and are tailored to fit almost any application.
What is the main function of the impeller in a centrifugal chiller?
An impeller is a rotating component of a centrifugal pump that accelerates fluid outward from the center of rotation, thus transferring energy from the motor that drives the pump to the fluid being pumped.
How does a steam absorber work?
This absorption cooling cycle relies on three basic principles:
- When a liquid is heated it boils (vaporizes) and when a gas is cooled it condenses.
- Lowering the pressure above a liquid reduces its boiling point.
- Heat flows from warmer to cooler surfaces.
What is the difference between screw chiller and centrifugal chiller?
Centrifugal compressors have better full-load efficiency, and screw compressors can achieve comparable part-load efficiencies. Screw compressors are also better for part-load applications because they’re stable down to about 10% capacity, whereas centrifugal compressors can begin to surge at about 20% to 40% capacity.
Where are YORK chillers made?
It was manufactured at York’s one-time manufacturing site in Basildon. Not surprisingly, Johnson Controls, who now own the York brand, put the chiller’s longevity down to the its reliability, particularly when supported with genuine York spare parts.
Who makes YORK chillers?
Johnson Controls
With YORK® Chiller Solutions from Johnson Controls, we help you respond to your building efficiency needs by providing the widest variety water and air-cooled industrial and commercial chillers on the market.
What is a good COP for chiller?
For water cooled chillers, the minimum COP is 4.2 and the minimum IPLV is 5.2; for air cooled chillers the minimum COP is 2.5 and the minimum IPLV is 3.4. In general, water cooled chillers are more compact, less noisy, have longer operating lives and are more energy efficient than air cooled chillers.
What causes a centrifugal chiller to surge?
Surge can be attributed to maintenance issues including fouled tubes, low refrigerant charge, or non-condensables in the refrigerant. It can also be caused by poor control of water flow rates and condenser water temperatures.
