Скачать или смотреть Using reliable automotive coolant pumps in solar collectors – proven longevity

Cheap, tough & reliable: Car coolant pumps for solar thermal applications

If you’re building or upgrading a solar water heating system (solar collector), one of the most important components is the circulation pump. Many people are surprised to learn that one of the best and most cost-effective options is actually an automotive electric coolant pump – the kind commonly used in modern cars to circulate engine coolant.
Why automotive pumps work so well for solar applications

Proven durability
These pumps are designed to run for many years under tough conditions: high temperatures (up to 110–120 °C), constant vibration, pressure changes, and exposure to glycol-based fluids. A good car coolant pump often survives 150,000–300,000 km of driving – that’s many thousands of operating hours.
Low price
Quality aftermarket or even used OEM automotive pumps (e.g., from VW, BMW, Ford, Opel, etc.) can often be bought for €20–60, sometimes much less than a dedicated solar pump of similar capacity.

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