Eelsoojendid

Eelsoojendid are devices used to preheat a fluid, typically air or a gas, before it enters a primary heat exchanger or process. The primary function of an eelsoojendi is to improve the overall efficiency of a system by reducing the energy required by the main heating element. This can be achieved by recovering waste heat from exhaust streams or other available heat sources and transferring it to the incoming fluid.

In many industrial applications, such as power plants, furnaces, and drying processes, exhaust gases are released at high temperatures. An eelsoojendi can capture a significant portion of this thermal energy. This recovered heat is then used to warm up the incoming combustion air or process gas, meaning the main burner or heating system doesn't have to work as hard to reach the desired temperature. This reduction in the primary heating load translates directly into fuel savings and lower operational costs.

Eelsoojendid can be designed in various forms, including shell-and-tube heat exchangers, plate heat exchangers, or regenerative air heaters. The specific design choice depends on factors like the fluid properties, temperature differences, pressure requirements, and space constraints of the application. Regular maintenance is crucial to ensure optimal performance and to prevent fouling or corrosion, which can impede heat transfer efficiency.