Preheater

A preheater is a device in which a liquid is heated from a sub-cooled temperature to its evaporation temperature.

• Features
• Technical Data
• Send Enquiry

A preheater is a device in which a liquid is heated from a sub-cooled temperature to its evaporation temperature. An evaporator is often the device upstream the pre heated liquid.

In large steam systems, or in any process requiring high temperatures, the input fluid is usually preheated in stages, instead of trying to heat it in one step from ambient to the final temperature. Preheating in stages increases efficiency and minimizes thermal shock stress to components, as compared to injecting ambient temperature liquid into a boiler or other device that operates at high temperatures.

The temperature of exhaust flue gas is usually more than 200℃ in the industrial processes. An air preheater is often installed on the exit of chimney. The preheated air is applied on the combustion of the burner through the heat transfer of the burner through the heat transfer of the air preheater. Hence, the combustion efficiency is increased due to the temperature of flue gas is reduced. And that is to achieve the main value on the energy saving and low emissions.