Water-cooled chillers offer the most effective way to process heat; the net amount of power enhancement left for gas turbine is greater when compared to air-cooled chillers. However, they require a great deal of water. So they make sense where water is plentiful and inexpensive.
Water Cooled Chiller are designed to work within extreme tropicalized weather conditions while maintaining the highest energy efficiency. Designing and the choice of equipment are critical to conform to superior standards. A water-cooled chiller system in an air-conditioned hotel can take up about one-quarter of the total electricity consumption and considerable amounts of water in the heat rejection process. This paper evaluates operating cost savings of a chiller system integrated with optimal control of cooling towers and condenser water pumps. A sophisticated chiller system model was used to ascertain how different control methods influence the annual electricity and water consumption of chillers operating for the cooling load profile of a reference hotel. It is estimated that applying load-based speed control to the cooling tower fans and condenser water pumps could reduce the annual system electricity use by 8.6% and operating cost by 9.9% relative to the equivalent system using constant speed fans and pumps with as fixed set point of 29.4 °C for cooling water temperature control
HVAC chiller is a key component of many commercial and industrial cooling and refrigeration systems. A chiller is a machine that removes heat from a liquid via a vapor-compression . Industrial chillers are generally installed in a mechanical equipment room, beside an industrial process, or outside the building. Residential HVAC chillers can be installed in a storage tank next to the home. Chiller system changes the physical state of refrigerant to transfer heat from one area to another. The laws of pressure-temperature relationship state that increased pressure on a refrigerant increases its temperature while decreased pressure lowers its temperature. 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.
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