Heat and heat loss are two major indicators for purchasing solar water heaters
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    Many people will call our company to consult solar water heaters ? Most people only pay attention to the price and the size of the product's water tank. Few people will ask what the heat of the solar water heater is. What is the heat loss? Here, I warmly remind everyone that when purchasing solar water heaters, heat and heat loss. It is also two important indicators, so don't underestimate.
Contains a solar water heater industry in this energy-saving products projects that benefit the promotion for the first time declared more than 260 companies, to enter the final promotion list has only 20. According to industry insiders, more than 240 solar water heater companies were unsuccessful because most of the product inspection reports did not meet the requirements. Since the first mandatory national standard for solar water heaters, GB26969-2011, was not officially implemented, it has become an important indicator for screening enterprises. Many companies have not tested the energy efficiency of products according to this standard, thus missing the promotion qualification.
GB26969-2011 "domestic solar water heating system efficiency limit value and energy efficiency rating" August 1 officially implemented. It is reported that the standard divides the energy efficiency rating of solar water heaters into three levels. Among them, level 1 is the highest energy efficiency product, level 2 is the energy saving evaluation value, and level 3 is the energy efficiency limit value ( mandatory ) . Solar products that do not meet the energy efficiency limit of Level 3 are unqualified products and must not enter the market. Standard, solar water heater energy efficiency coefficients include heat gain and heat loss two indicators, is an integrated coefficients, according to conversion, the coefficient belonging to the energy efficiency of 0.15 level 3, to belong to the energy efficiency of 0.3 2, to belong to the energy efficiency of 0.5 Level 1 .
Many consumers are only paying attention to factors such as price and water tank size when purchasing solar water heaters. However, it ignores two important indicators of heat and heat loss. Calorific value refers to the total amount of heat available to the water heater from the light in one day. It is a comprehensive indicator of the performance of the water heater. Under the same illumination, the heat obtained by different water heaters is different, the heat is large, and the water temperature of the same water is high. Therefore, for the water heater, the most important thing is to obtain heat, and the amount of heat is mainly determined by the direct heat of the vacuum tube, the heat of reflection, and the heat loss (that is, the heat loss. It depends on the thickness of the insulation layer, the process of the insulation material, Vacuum tube reflectance and vacuum).
To put it bluntly, the heat gain of the water heater and the cooling capacity of the air conditioner are a corresponding concept. External conditions such as ambient temperature, basic water temperature, sunshine time, and sunshine intensity all affect the heat gain of a water heater. For example, if it is the same heat efficiency, the separate solar water heating system is convenient and flexible to install, the solar collector is placed on the roof, the water tank is placed on the ground, and the roof does not bear the weight of the water tank, which is more safe and reliable. However, due to the long distance between the collector and the water tank, the loss of useful heat is caused, and the daily useful heat is less than the compact water heater of the same specification. Therefore, when consumers are shopping, it depends on whether the heat of the water heater is the largest.
Through the above events, we can easily see how much heat and heat loss are important for solar water heaters , so friends who buy solar water heaters should not ignore these two important factors, if the heat is not high, the water heater will Attention to Luo, if the heat loss is large, you should also consider whether you want to buy, I hope this tip can help everyone.
This article is provided by solar water heater project, flat solar water heater manufacturer, magnesium double lotus solar plant
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