A heat exchanger is a device designed to transfer heat between two or more fluids without mixing them. In plumbing and HVAC systems, heat exchangers are commonly used in water heaters, boilers, radiant heating systems, and cooling systems. They facilitate the efficient transfer of heat from one medium (e.g., hot water, steam, or refrigerant) to another (e.g., domestic water or air), improving energy efficiency and system performance. Heat exchangers come in various designs, such as shell-and-tube, plate, and coil configurations, each suited for specific applications and heat transfer requirements. Proper maintenance, including regular cleaning and inspection, is necessary to prevent fouling, scaling, or corrosion, which can reduce heat transfer efficiency and increase energy consumption.
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