How does chiller work

First of all understand the meaning of chiller. A vapor-compression chiller uses a refrigerant internally as its working fluid. Important parameters to consider are the operating temperatures and pressures. What is a killer chiller? This cool fluid removes heat from the process and the warm fluid returns to the chiller.

Every chiller system contains a refrigerant.

The process starts with a low-pressure refrigerant entering the evaporator. Inside the evaporator, the refrigerant is heate causing it to undergo a phase change into a gas. A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. This liquid can then be circulated through a heat exchanger to cool equipment, or another process stream.

As a necessary by-product, refrigeration creates waste heat that must be exhausted to ambience, or for greater efficiency, recovered for heating purposes. Chilled water is used to cool and dehumidify air in mid- to large-size commercial, industrial, and institutional facilities. To put it simply, industrial chillers cool process fluids.

They both have an evaporator, compressor, condenser and an expansion valve. The main difference is that one uses air to fuel condenser cooling and the other uses water.

In this article we will be covering this topic to understand the basics of HVAC central plant. The chillers will produce “chilled water” which is pumped out around the building to the Air Handling Units (AHU’s) and Fan Coil Units (FCU’s) Which remove the unwanted heat from the building and transfer it into the chilled water loop. Precise process control for all applications – in every industry. Regardless of your industry, maintaining high efficiency and quality is only possible when you start at the field level with precise, transparent process measurements. Siemens offers intelligent instrumentation solutions for every application.

Chillers use two main circuits, one being the fluid circuit. It consists of a pump, heat exchanger, and fluid reservoir. The system delivers cold fluid to the equipment or products that need cooling.

The immersion chiller itself is rather simple, but must be properly crafted to be effective in its use. It is made up of copper piping, heat-safe tubing and metal fasteners. Heat removal is based on the principle that heat will move from a hotter source to a colder source.

Blast chillers or freezers operate by blowing forced cooled air over food placed inside. These specialized freezers usually have a number of different settings that can be selected depending on if your food is room temperature, chille or hot. Water cooled chillers are typically located in the basement or lowest floor of a building. This type of chiller needs a cooling tower to reject the heat from the building.

As the refrigerant circulates through the HVAC chiller , various components change its pressure and temperature, causing it to boil into a gas and condense into a liquid. During the change of state from liquid to gas, the refrigerant absorbs heat, and the refrigerant releases heat when it returns to its liquid state. We include photographs of.

The main components of the absorption chiller are the condenser and the generator which comprise the top most chamber.

The evaporator and absorber comprise the bottom most chamber. There is also a heat exchanger to improve the efficiency of the system. How Does a Chiller Work ? The cooling tower will force ambient air across the condenser water to extract the unwanted heat.

The fan within the cooling tower forces this heat to leave the system,. This refrigerant is pumped to the condenser, which begins to condense the gas into liquid as it becomes cooled by a fan.