Vacuum hot water boiler in China

Vacuum boiler is a kind of vacuum hot water boiler, and also known as vacuum phase change boiler. The fuel for vacuum boiler can be gas or oil, so they are divided into oil vacuum hot water boiler and gas fired vacuum hot water boiler.

The vacuum hot water boilers is a unique three pass, horizontal fire tube, water-backed boiler design developed and perfected in ZG and is a standard in the ASME. This particular shell design overcomes thermal shock problems common to other multi-pass boilers. Thermal stress of gas vacuum boiler is greatly reduced because of two unique features of the furnace. Firstly, the larger diameter, shorter furnace produces less thermal expansion than a furnace of an ordinary boiler. Secondly, the furnace end is supported by stays which are attached to the rear tube sheet. Tube sheet fatigue failures are eliminated because shear stress between the furnace and the rear tube sheet is greatly reduced. Compact design greatly reduced footprint given relatively large diameter and short furnace design dual fuels:  natural gas, oil and biogas up to 83% efficiency.

Model:Vacuum hot water boiler
The range of output:0.35-7MW
Pressure: -0.02Mpa
Fuels:Diesel,natural gas,city gas,LPG