Biogas Generator Set Radiators (Common Dry Coolers / High- And Low-Temperature Air-Cooled)

(Typically Dry-Type Air Coolers / Separate High- and Low-Temperature Cooling)

Biogas is highly humid, corrosive, and contains many impurities. Therefore, radiator designs prioritize corrosion resistance, clog prevention, and separate high- and low-temperature cooling. In engineering practice, dry-type air coolers are almost exclusively used, and water cooling towers are not employed.

High-Temperature Circuit (HT)

Temperature: 85–95℃

Low-Temperature Circuit (LT)

Temperature: 55–70℃

Function: Lowers intake air temperature, protects engine oil, and stabilizes the air-fuel ratio

Each circuit is equipped with a dedicated heat exchanger, collectively referred to as high- and low-temperature dry coolers.

Biogas contains H₂S and water vapor, which are highly corrosive; fins and piping must be corrosion-resistant.

Biogas contains many impurities, and cooling fins are prone to clogging; the design must facilitate water washing and air blowing.

Biogas calorific value fluctuates significantly; unstable temperatures in the low-temperature circuit directly affect power output and exhaust temperature.

Ethylene glycol antifreeze is commonly used to prevent pipe bursts due to freezing.