Recuperators For Pre-heating Combustion Air In Heating Systems By The Use Of Hot Flue Gas
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Recuperators For Pre-heating Combustion Air In Heating Systems By The Use Of Hot Flue Gas
A recuperator is a device that is used to recover waste heat from flue gases and transfer it to the incoming combustion air in a heating system. The recuperator works by using a heat exchanger to transfer heat from the hot flue gas to the cooler combustion air, which is then preheated before entering the combustion chamber. This preheating of the combustion air helps to improve the efficiency of the heating system by reducing the amount of fuel needed to achieve the desired temperature. Recuperators are commonly used in industrial heating systems, such as boilers, furnaces, and kilns, where large amounts of heat are generated by the combustion of fuel. By using a recuperator to preheat the combustion air, the amount of fuel needed to achieve the desired temperature can be significantly reduced, resulting in lower operating costs and improved energy efficiency. There are two main types of recuperators: direct-contact and indirect-contact. Direct-contact recuperators use a spray of water or other liquid to cool the flue gas and transfer the heat to the incoming combustion air. Indirect-contact recuperators use a heat exchanger to transfer the heat from the flue gas to the combustion air without mixing the two streams. Recuperators are an important component of modern heating systems, and their use can significantly improve energy efficiency and reduce operating costs. However, they require careful design and maintenance to ensure optimal performance and prevent issues such as corrosion and fouling.
recuperator, heat exchanger, combustion air, flue gas, energy efficiency
CITATION : "Kevin Johnson. 'Recuperators For Pre-heating Combustion Air In Heating Systems By The Use Of Hot Flue Gas.' Design+Encyclopedia. https://design-encyclopedia.com/define/recuperators-for-pre-heating-combustion-air-in-heating-systems-by-the-use-of-hot-flue-gas?E=297938 (Accessed on October 14, 2026)"
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