H-Type High and Low Temperature Dry Cooler | Jenbacher J620 Remote Radiator

Application Overview

Compatible Engine: INNIO Jenbacher J620 (20V) gas engine, output power 3000-3360kW, for biogas, landfill gas, and natural gas CHP cogeneration power plants

Cooling Solution: H-type integrated HT-LT remote radiator/dry cooler, with two completely independent closed-loop ethylene glycol circulation loops for high and low temperatures, outdoor remote heat dissipation, zero water consumption without cooling tower

Operating Conditions: 24-hour continuous base load operation, biogas projects with sulfur-containing and siloxane-corrosive media in the air, outdoor installation

Dual-Loop Cooling Parameters

HT High-Temperature Loop (Cylinder Liner Water Cooling)

Function: Cools cylinder liners, cylinder head, and cylinder liner water

Operating Temperature: Inlet water 85-95℃ / Outlet water 75-85℃

Purpose: Removes main waste heat from the engine cylinder liners, stabilizes engine temperature, reduces thermal fatigue, and matches the J620 original cooling load

LT Low-Temperature Loop (Intercooler + (Oil Cooling)

Function: Cooling of the turbocharger intercooler and oil heat exchanger

Operating Temperature: Inlet water 30-40℃ / Outlet water 40-55℃

Purpose: Precisely controls intake air temperature, avoids power attenuation in high-temperature environments, protects oil life, and ensures unit power generation efficiency.

H-type Structure Core Features

H-type Double-Face Coil Layout: Two sets of heat exchange cores are arranged vertically opposite each other in an "H" shape, with the fan unit located at the top of the equipment; the equipment occupies less floor space, and the height can be utilized, making it ideal for projects with limited factory space and ample side air intake space; hot air is exhausted upwards, minimizing the risk of heat backflow.

HT-LT Fully Separate Integrated Unit: High-temperature and low-temperature coils are independent, with no internal crossflow; single unit supplied and installed, eliminating the need for separate radiators, fully meeting the Jenbacher J620 original dual-loop cooling requirements.

Corrosion-resistant heat exchange core options: copper tube with aluminum fins and epoxy coating / stainless steel tube with H-shaped fins; hot-dip galvanized frame to resist corrosive air and salt spray corrosion in biogas plants.

EC variable frequency axial flow fan unit: automatically adjusts speed according to medium and ambient temperature, reducing auxiliary power consumption, low noise, and energy saving under partial load conditions.

Completely dry cooling, no water replenishment or treatment required, suitable for biogas power plants in water-scarce areas.

Engineering customization: thermal calculations based on J620 sample, matching flow rate, pressure drop, and flange specifications; pre-installed exhaust valve, drain valve, and sensor interface; optional maintenance platform, protective net, and rainproof cover to meet long-term unattended outdoor operation.

Advantages of the H-Type Solution:

Upward exhaust, hot air is kept away from the air inlet, making it less prone to hot air backflow in high-temperature environments compared to the V-type;

Small footprint, suitable for biogas power plants with limited space;

Remote outdoor heat dissipation significantly reduces heat and noise in the machine room;

Integrated HT-LT design reduces on-site piping work and simplifies commissioning;

Corrosion-resistant configuration adapts to harsh operating conditions of biogas and landfill gas, extending the overall lifespan of the unit.