A variety of cooling devices can be used to achieve optimal process or ambient temperatures under commercial and industrial conditions. Popular and easily accessible options are cooling systems for radiators (air or water cooling radiators) and heat exchangers.
Although most thermal control systems use a combination of coolant and heat exchanger, these cooling devices sometimes exist as stand-alone arrangements. This article explains the difference between a heat exchanger and a chiller, while highlighting the advantages and disadvantages of each type of device. Heat exchanger versus cooler The main difference between heat exchanger and cooler is in the design. While a refrigeration system has a refrigeration unit that cools the circulating coolant, a heat exchanger does not have a refrigeration unit and achieves temperature control through direct heat exchange of the fluid. What is cooler? A chiller is a device that removes heat from a process by passing cold water through it. Cold water used in chillers is produced by means of an absorption and cooling cycle or by compressing a liquid from a vaporized form. How does the cooler work? Understanding how a cooler works depends on its primary cooling system. Steam compression Heat absorption The structure of a vapor compression chiller usually consists of a compressor unit that creates a cooling effect by converting the vaporized refrigerant into a cooled liquid form. Vapor compression systems are usually installed with air coolers, water coolers or evaporation condensers. The use of absorption chillers is a more cost-effective, energy-efficient cooling in which the refrigerant is passed through a heated process in a single-phase refrigerant circuit. The device mainly consists of a water-based coolant with lithium bromide as an absorbent. What is a heat exchanger? Heat exchange cooling systems use devices that transfer heat through various fluids. A heat exchanger cooler may use a refrigerant consisting of an air or a liquid mixture to remove the heat generated by the associated heating process. Condenser and heat exchanger: Are they the same? The condenser can be seen as a form of heat exchanger, as its function is similar to that of a refrigeration heat exchanger. While a heat exchanger can control the process temperature independently, a condenser is a component of a cooling system (water or air cooler) used to remove heat generated by an industrial or commercial process. Heat exchanger - principle of operation Heat exchangers work by transferring heat from one liquid medium (industrial process) to another. This cooling effect is achieved by the proximity of the two liquids, which allows conductive heat activity (heat is absorbed by the heated liquid from the cooling medium). The two liquids are separated from each other by a solid barrier that prevents them from mixing. Due to the direction of the interacting fluid flows, heat exchangers can be divided into three groups: Parallel heat exchangers allow the coolant to flow in the same direction as in the heated process. The counter-current heat exchanger design allows the coolant and process to enter from opposite ends of the device. This is the most efficient heat exchanger design as it conducts most of the heat from the process medium to the coolant per unit mass. The cross-flow heat exchanger transfers the coolant and processes the liquid in a direction perpendicular to each other. For optimal cooling, the device is designed to maximize the contact area between the heated process fluid and the coolant and at the same time limit free flow in the exchanger. Buy water cooled industrial chillers at best prices.
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