How to buy solar water heater to check its quality?
Usually through the instrument testing, to see if it is in line with national standards. If only by experience to identify, you should pay attention to these aspects. 1: consumers in the purchase of the product must be on the water heater, heat exchanger, pipeline interface and core board factory conducted pressure test and leak check, at the same time on their types and materials and consumer requirements are considered. If you can choose according to their own economic conditions of different prices of products
There are several important issues need to pay attention to: consumers in the purchase, do not covet cheap, and buy some products without quality assurance. So, consumers should be how to identify the quality of it? 3: it is best to find a reputable manufacturers. Because the products are vulnerable products, the general small manufacturers will not consider after-sales warranty, it is necessary to choose the service manufacturers. More than five years to sell the same brand, there is no other brand in the store.
According to the number of households to choose different volumes of water heaters; must consider whether the use of all-weather, etc. 2: to understand the technical performance of products, mainly the average daily efficiency and average heat loss coefficient. At present, many people have a misconception that the higher the water temperature in the tank, the better the performance of the heat. In fact, the water temperature can not explain the quality of the product. Water temperature and sunshine intensity, sunshine time, water capacity, lighting area, the initial temperature of the water are related, so the most scientific way to talk about thermal efficiency and heat loss coefficient.
