Gas-liquid Finned Tube Heat Exchanger

Gas-liquid Finned Tube Heat Exchanger

For the waste heat of the flue gas, in addition to the waste heat recovery in the form of gas-gas heat exchange, in many processes need to use the flue gas to heat the process hot water needed in the process system or the use of circulating water to cool down the flue gas. At this time, due to the plate heat exchanger of the large channel, thin plate and other characteristics, can not withstand the liquid pressure, the best heat exchanger selection for the tube and fin heat exchanger.

Liquid heat transfer intensity, you can quickly transfer heat to the heat transfer material, the material on the fins can greatly expand the heat transfer area, so that the gas contact more heat transfer area to enhance the overall heat transfer effect; similarly, the flue gas cooling liquid heat absorption, the principle is the same, such as the use of cooling towers circulating water to cool the flue gas and then desulphurisation of the flue gas!

Introduction to the principle

Liquid heat transfer coefficient is generally up to 1000 ~ 3000W / (㎡ - ℃), the heat transfer coefficient of the gas is generally only 30 ~ 80W / (㎡ - ℃), limiting the heat transfer between the gas-liquid, therefore, when the difference in heat transfer properties of hot and cold sides of the medium, it is best to choose the finned tube and fin heat exchanger.

Applicable Range Parameters

Operating pressure: ±20kPa (outside the tube)

Operating temperature: -50~1000℃