Both a chiller and a cooling tower are used to remove heat from a liquid, which is used as a coolant in massive devices like power stations. A cooling tower removes heat from the water that’s discharged from a condenser. The discharged water is then recycled back into the plant to be used to cool the system again, or discharged into the environment. Chillers absorb heat from a coolant, which is fully contained in a cooling system. The chiller then transfers heat to the air around the chiller unit. Although chillers and cooling towers carry out comparable functions, they fluctuate in response to their varieties and components used, and the nature of the tools they cool and energy
Sorts of Chillers and Cooling Towers
Cooling towers are designed in two main types: mechanical draft and pure draft. Mechanical draft cooling towers rely on fans to drag cool air into the system to take away the heat from water. Natural draft towers, commonly seen with a nuclear power plant, use the exhaust air funneled right into a tall chimney. As the air rises, it supplies cooling properties. Chillers are designed as radiators, which are either water-cooled or air-cooled. Air-cooled chillers want less maintenance than water-cooled chillers, while the latter consumes much less energy than the previous.
The foremost components of a cooling tower are the basin and pumps. The distribution basin collects the water discharged from the circulating water system. Pumps supply water to the cooling towers, and create the water stream that facilitates cooling. Chillers make the most of compressors, evaporator heat exchangers and condenser heat exchangers. The condenser heat exchanger is the major part that rejects heat from the chillers to air.
Applications and Usages
Cooling towers are typically used to supply cooled water to electric power era and mechanical processes. Power plants that are situated close to lakes and rivers use cooling towers to cool the circulating water, which has been heated within the condenser. Chillers are used in applications, which are not affected by the extra heat discharged by it. Actually, the additional heat is used to heat the plant through the winter. The most common chiller functions embrace use in the plastic business and refrigeration functions.
Energy Consumption Effectivity
A cooling tower uses pumps to circulate the water supply. The pumps consume a number of power. The fans used in cooling towers additionally devour electrical power; nonetheless, the cooling towers provide considerably better cooling capacity, which interprets into larger vitality-efficiency cooling. Chillers are pushed by compressors and heat exchangers, and due to this fact are not as energy efficient. When evaluating chillers, water-cooled chillers supply optimum effectivity when in comparison with the extent of power consumption. A wet surface transfers heat better than a dry surface; hence, a water-cooled chiller consumes 10 % less energy than air-cooled chillers.