Solar water heater: Vacuum and flat road game
[REVIEW] flat-plate solar collector system is most suitable for pressure and secondary circulatory system of the solar collector, while the integration with the building, with easy integration with the building facade, easy installation and operation and maintenance, long life other advantages, to promote practical flat panel solar water heater is to narrow the gap with the international advanced level is an important way.
Flat-plate solar collectors are suited for pressure systems and secondary circulatory system of the solar collector, while the integration with the building, with easy integration with the building facade, easy installation and operation and maintenance, long life and other advantages, to promote practical flat-plate solar water heater is to narrow the gap with the international advanced level is an important way.
\"Vacuum\" mainstream
According to reports, China\\ s are mainly two: s and flat-type water heater, water heater vacuum tube which occupy more than 90% market share, which the international counterparts dubbed the \"water heater China phenomenon.\" Because, on a global scale to vacuum tube solar water heaters based only our country.
With the process of urban development have sprung up multi-layer and high-rise buildings, the vacuum tube solar water heater installation and use of a challenge. As the multi-storey buildings and high-rise building roof area is not enough, should adopt the balcony-type or wall-type solar water heater. Vacuum tube is fragile, easily aging sealing gasket leaking, the balcony or wall installation security risk.
Flow using copper pipe, plate glass produced using flat plate solar collectors can load 1500 kg, the whole system safe and reliable components, combined with a higher degree of construction, especially suitable for installation on the balcony and the building\\ s exterior walls body, so that breaches of the solar water heater into a safe and reliable times. System is designed for flat panel solar water heater pressure, constant pressure, large flow, bringing more people bathing pleasure, and the resistance to corrosion, scale-free, clean water to meet urban living style, will promote the solar industry, urbanization the process.
China Rural Energy Industry Association Professional Committee Luo Zhentao utilization of solar energy in the analysis of foreign applications in flat panel solar water heater, said the main reason: flat panel solar water heater under pressure, long life, easy to form the secondary loop system; easily combined with the construction, easy installation, easy to design; Third, the system safe and reliable.
\"Flat\" obvious advantages
Since the flat-plate solar water heater better, then why only our vacuum products become absolutely mainstream?
\"Relatively speaking, the vacuum tube type now there is no threshold.\" Deeply understands one of the industry, \"in some places, some people buy vacuum tube solar water heater parts, an assembly to sell them, but how the quality of follow-up technical support, equipment maintenance how, you have to look at the purchaser\\ s luck. \"
The formal large vacuum tube solar water heater manufacturers to products based products, it is by historical reasons. 80 to 90 years of last century, when China\\ s first use of natural circulation type solar water heater plate temperature requirements above 0 ?, can be compared to vacuum-type work at about minus 10 ?. Although the performance, the flat type has many advantages, but this can not be fatal to enter the country.
\"But the feeling from the actual use, the vacuum tube type is always in the \\ can\\ scope, but also reach the \\ easy\\ .\" One of the industry, due to the vacuum tube type because of cost considerations, the general use of non-bearing water tank, so when hot and cold water flow instability phenomenon, and water quality are generally two types of water.
\"Flat-plate solar water heaters use the secondary circulatory system and antifreeze, a good solution to the problem of low-temperature operation, after completion of its advantages is no doubt.\" Hu Guang-liang, chairman of the Guangdong Five Star Solar Energy Co., said the company\\ s research and development of new and efficient flat panel solar water heater and vacuum tube solar water heaters in China\\ s northernmost Mohe for extreme low temperature contrast test showed that at minus 40 ?, flat products still work good, stable output of hot water, and vacuum tube type has burst.