Solar inverters generate a large amount of heat during operation. If this heat is not dissipated in a timely manner, the internal temperature of the inverter will continue to rise, leading to a decrease in device performance, shortened lifespan, and even causing malfunctions. Therefore, based on solar inverters with different heat exchangers, we provide you with suitable cooling solutions.
Air cooled heat exchangers use air as a cooling medium and force air to flow over the surface of the heat exchanger through a fan to achieve heat exchange.
Design selection: We determine the size, heat dissipation area, and fan air volume and pressure of the air-cooled heat exchanger based on the power size, heating power, and operating environment of the inverter. Generally speaking, compact plate fin air-cooled heat exchangers can be used for small solar inverters, which have the characteristics of small size and high heat dissipation efficiency; Large inverters can use tube and strip air-cooled heat exchangers, which have a large heat dissipation area and can meet high-power heat dissipation requirements.
Liquid cooled heat exchangers use liquid as the cooling medium, which circulates inside the heat exchanger, absorbs the heat generated by the inverter, and then dissipates the heat to the external environment through the radiator.
If you have any needs, please contact us immediately.
Before You Start
A successful Heat exchanger for cooling solar inverters project begins with measurement. Record the supply and exhaust airflow rates, the temperatures on each side, and the hours the system runs per year. Note any contaminants in the exhaust and the available space for the core and ductwork. These figures decide both the type of exchanger and whether the payback makes sense.
Step-by-Step
First, choose the exchanger type from the air cleanliness and recovery target. Second, size the core using the measured airflow and the log-mean temperature difference, leaving margin for fouling. Third, lay out the duct path so the exhaust is filtered before the core and the supply side has drainage if it may condense. Fourth, add a bypass for free cooling and wire the fans to a simple control. Finally, commission the unit and record baseline temperatures.
Verification
After startup, compare the pre- and post-installation supply temperatures at the same outdoor condition. A steady recovery of 50 percent or more confirms correct sizing. Re-check each season and clean the exhaust side when the recovered temperature begins to fall, because fouling quietly erodes performance over time.
Frequently Asked Questions
Do I need a bypass? In most climates yes, so the system can free-cool when outdoor air is mild. How is sizing done? From measured airflow and the log-mean temperature difference, not from estimates.
