Antifreeze application in solar water heater systems

CustomersOverview

A solar water heater manufacturer whose products are mainly sold to cold northern regions, where winter temperatures often drop below - At 10°C, the collector tubes and pipes of solar water heaters are prone to cracking due to freezing, leading to user property losses and damage to the brand's reputation.

Customer Requirements

The antifreeze for solar water heater circulation systems is required to - It does not freeze at 25°C, protecting the heat collector tubes and pipes; it exhibits excellent weather resistance, remaining stable and undamaged even after long-term exposure to sunlight; moreover, it is harmless to humans and complies with safety standards for household products.

Solutions

For themRecommendThis solar-specific antifreeze uses propylene glycol as its main ingredient; it is non-toxic and harmless, posing no risk to human health or the environment even if leaked. With added UV absorbers and antioxidants, it effectively resists ultraviolet rays from sunlight and oxygen in the air, thereby extending the service life of the antifreeze. The product is compatible with commonly used solar water heaters. EPDM rubber hoses exhibit good compatibility with copper pipes, without causing corrosion or swelling.

Application Results

In northern winters In an environment of -20°C, solar water heaters using this antifreeze showed no cracking of collector tubes or ice blockage in pipes, and hot water supply remained normal. After three years of outdoor exposure testing, the performance indicators of the antifreeze decreased by only 5%, still meeting usage requirements. Customer feedback indicated a 90% reduction in complaint rates, and the product's market share in cold regions increased significantly; this antifreeze has become a standard component for solar water heaters in northern markets.