Use of solar thermal end-use status , with foreign countries compared there are significant differences. World solar energy market has to flat-panel solar water heater led products , 90 % of the solar water heating systems are used flat panel
solar collector . So most Chinese solar energy enterprises into the international market have experienced not a small resistance. foreign city high-rise buildings Mostly , the vacuum tube water heaters the special structure of so that each household in installing solar energy the feasibility of is minimal , the vacuum tube water heaters must be placed on the roof , if all households use the vacuum tube products, roof area failed to reach the ratio of the amount Moreover, low floors household If you use vacuum , hot water to go through tens of meters pipes can be from the top of the building passed interior will cause some of the heat of the waste, while abroad severe weather are more likely to cause the vacuum tube rupture of , there are certain Security risks. The flat solar are both roof and collector dual function , and the pressure is high, with construction to achieve a perfect combination to in foreign countries achieve widespread use .
