Lisälämpövaihdin

A lisälämpövaihdin, often translated as an auxiliary heat exchanger or supplementary heat exchanger, is a device used in heating systems to increase or supplement the heat output. It works on the principle of transferring thermal energy from one fluid to another without direct contact. In many applications, a lisälämpövaihdin is added to an existing heating system to provide additional warmth or to recover waste heat.

These devices are commonly found in residential and commercial buildings. For instance, in a central heating system, a lisälämpövaihdin might be used in conjunction with a primary heat source like a boiler or furnace to preheat domestic hot water or to warm up an underperforming radiator. They can also be integrated into ventilation systems to capture heat from outgoing air and use it to warm incoming fresh air, thereby reducing the energy required for heating.

The construction of a lisälämpövaihdin typically involves a series of tubes or plates through which two different fluids circulate. One fluid, carrying the heat to be transferred, flows through one side of the exchanger, while the other fluid, which needs to be heated, flows through the other. The large surface area provided by the tubes or plates facilitates efficient heat transfer. The specific design and materials used depend on the intended application, including the temperature and pressure of the fluids involved, and the desired rate of heat exchange.