Dry Cooler H Type Remote Radiators Service 20 Containerized MTU Genset
Dry Cooler H Type Remote Radiators Service 20 Containerized MTU Genset
Provide remote heat dissipation for containerized generator sets (such as MTU, Perkins, Cummins, etc.), solving the problems of space limitation and poor exhaust airflow in the container.
The genset is placed inside the container, and the H-type radiator is independently mounted on the outside of the container (roof, side or ground support).
Core advantages
Reducing the temperature inside the container: avoiding hot air circulation leading to a drop in the efficiency of the unit or high temperature alarms.
Noise isolation: the radiator is far away from the unit, reducing the impact of fan noise on the surrounding environment.
Modular expansion: suitable for power station projects with multiple containerized units connected in parallel.
H-type dry cooler design points
1. Heat load calculation
Heat dissipation of a single unit (example):
If the power of the generator set is 1MW and the efficiency is 35%, the heat dissipation will be ≈ 650kW (to be corrected according to the actual unit parameters).
Total heat load of 20 units: 13,000kW (need to design heat dissipation unit by area).
Design temperature difference:
Inlet air temperature (ambient temperature): 40°C
Outgoing air temperature (hot air): ≤55℃ (temperature difference ΔT=15℃)
2. Radiator selection
Structure form:
H-type dry cooler (horizontal air inlet, vertical air outlet), using aluminum finned tubes or copper copper sets of aluminum fins, corrosion resistance and high heat transfer efficiency.
Fan configuration:
High-pressure axial fan (explosion-proof optional), air volume to meet Q = heat / (ρ × Cp × ΔT) (ρ: air density, Cp: specific heat capacity).
Example: air volume of a single cooling unit ≈ 30,000 m³/h (to be controlled in multiple groups).
3. Remote connection program
Piping design:
Cooling medium: closed loop water (or glycol solution, anti-freeze).
Pipe insulation: to minimize heat loss during remote transportation (especially in winter).
Pressure drop control:
Pump head needs to overcome pipe resistance (recommended pipe length <50m, elbows ≤ 3).
Key technologies and solutions
1. Response to high temperature environment
Spray cooling: add a spraying system on the air inlet side of the radiator, which is activated when the temperature is extremely high (it can reduce the temperature of the air inlet by 5~8℃).
Redundant Fan: Increase 20% backup airflow to prevent high temperature down load.
2. Windproof and dustproof design
Dustproof net: V-shaped filter (removable and washable, suitable for sandy and dusty areas).
Wind shield: Avoid side winds interfering with cooling efficiency (especially when installed on the roof).
3. Intelligent control
Frequency conversion adjustment: automatically adjust the fan speed according to the unit load and ambient temperature (energy saving more than 30%).
Remote monitoring: real-time monitoring of water temperature, wind temperature and fan status through PLC, and linkage of unit load reduction when abnormal.
Installation and Maintenance
1. Installation Recommendations
Layout: the distance between the radiator and the container is ≥2m to ensure that there is no return flow of hot air.
Vibration damping measures: install rubber pads between the fan and the support to avoid resonance damage to the pipeline.
2. Operation and maintenance plan
Daily inspection: clean the dust net every week, check the lubrication of fan bearings every month.
Annual maintenance: pressure test the sealing of pipeline, replace the aging fins and tubes.
Common Problems and Countermeasures
Insufficient heat dissipation leads to unit shutdown: add spare cooling unit or optimize fan control logic.
Freezing of coolant in winter: change to glycol solution (ratio adjusted according to the lowest temperature).
Fan noise exceeds the standard: Select low-noise fan (≤75dB) or install silencer.
