solar geyser manufacturer and price relationship

solar geyser manufacturer and price relationship

Now there are many manufacturers of solar geysers, and the price difference is also relatively large. There are brand-effects, advertising costs, and sales costs, as well as product production costs and service costs. Poor solar geysers mainly cut corners in the following aspects: First, the use of low-cost vacuum tubes, low-cost vacuum tubes because the coating is not off, low thermal efficiency, aging, fast use; the second is the use of low-cost insulation materials, solar geysers in outdoor , The insulation layer is very important, have a certain thickness, but the key depends on the quality, a good product 
with high temperature and constant pressure foaming polyurethane insulation layer, high density, good insulation effect; poor product polyurethane insulation density is also Half of the former, the insulation effect is poor; Third, the inner and outer barrel metal materials are poor; Fourth, the control circuit is simple, the quality of the solenoid valve is not good. There are: good products provide long-term maintenance services, but also for a variety of accident insurance products; poor products, although some say so, but some JS did a few years to change brands, escape responsibility for after-sales service .  http://www.aspessolarproducts.com/pressure-solar-geysers/116.html

  solar geyser circuit control is very important, good intelligent control instrument should have the following functions: 1 / display water temperature and water status and work status display, water temperature and water level arbitrarily set; 2 / automatic water, anti-air dry burning, security self-test, water Full and water shortage automatic alarm; 3 / automatic control of electric auxiliary heating, when the sun's light energy can not meet the water temperature requirements, automatic start electric auxiliary heating. 4/ Outdoor anti-freeze function of pipelines (as if only the brand I bought this model has), when the water temperature in the pipeline is lower than 4 degrees, start the tropical heat, prevent the pipeline from freezing, and realize the winter pipeline without emptying; 5/ Abnormal automatic alarm, leakage protection and other functions. Some JS tempted you to purchase in order to reduce costs, and introduced that no smart controller can be used. That's right, it can make it work, but it's troublesome. You have to give solar water heaters water every morning. Is that a problem? If you forget, the machine may dry out and there is a problem. Some JS is equipped with a so-called control instrument for you. It is actually only a water level thermometer. It can only remind you that the water is on! Use is not great. solar geysers should be equipped with a good control instrument, at least have automatic water, anti-air drying, full water and water shortage automatic alarm function.