Want to see the glass vacuum light-gathering extremely hot effect. Light-gathering collection hot ability strong and the weak is measured water heater performance criterion important symbol. Vacuum tube is solar collection hot "heart", it will light energy into heat energy, let the water warm up in the water tank, so the same external conditions under vacuum tubes have how many calories, directly affects the water meter. At present, the market has two kinds of vacuum tubes, one kind is to use traditional gradient membrane manufacture process, Another kind is to use the international leading interference membrane patent technology manufacturing, with "high temperature resistant, fight cold and more efficient" characteristics of three tenors vacuum tubes, the latter is the former alternative products, it will have heat raised, thoroughly solved the traditional vacuum tubes in YinYuTian illumination is insufficient temperature is not high, the winter temperature is too low solar bad to use of difficult problems.
2 to see tank. The solar water heater tank is except glass vacuum tubes outside, the most important part of
solar water heater before, when buying, must understand of cistern bladder material, want to observe vacuum tubes inserted tank after airtight effect, lest seepage situation occur more attention, in addition to the thickness of the thermal insulation layer, the relationship of cistern heat preservation effect. Now all the strong into solar series products of the bladder are adopted the SUS304-2B import food-grade stainless steel materials.
Thirdly, see stents. The brand is different, style each different, according to building roof is flat-roofed or ridge top, stent type is divided again flat-roofed type and friendly-using type. Stents are carrying the role of tank and fixed collector, so for stent's request was only bearingpressure ability request, usually stents in the thickness of the steel, steel 2mm around the thicker the support ability also is stronger.
The fourth is to see a brand and after-sales service. Solar energy water heater host outdoors, a perennial sufferd wind and rain, so need classics professional servicing and maintenance. Because the solar energy water heater market chaos, market filled more neither quality assurance, nor after-sales service products, if farmers buy such products, no doubt in cost to yourself in trouble, so in the solar water heater of choose and buy when, not blindly covet petty gain, had better buy the product of brand of the countryside in home appliance, so on quality can guaranteed, and access to state subsidies.
