W10-квартира панельный обогреватель солнечные водонагревательные

solar water heater: All-in-one flat-panel solar water heater owns the features of good unity, long life, few failures, low security risks and low costs. The flat panel solarwater heater still can be used in winter from now on as adopting emptying antifreeze technolog. Flat-plate collector has the following advantages: 1. Flat-plate collector doesn't require vacuum with steady thermal performance. Perfect unity and long-term use. 2. In flat-plate collector system, water or working fluid flow in the metal pipe without touching the glass cover, so the tipe will not burst for sudden heat or sudden cold. 3. Flat-plate collector can be installed without space or be installed compactly. It not only supplies hot water but also owns the roof feature functions such as insulation, shading, water-proof and etc., which substitutes some even all of the roof materials. 4. The heat collector can be designed in various shape, size can be designed to match building materials and the structure. 5. Good pressure performance enables stability of the system.