Ten years ago, with the home appliances going to the countryside, China's solar energy industry development was in full swing, China's solar water heater area is the world's first, R&D, manufacturing, sales, and popularity are also the world's first. As early as 1996, Huang Ming founded the "Solar Science Newspaper" to promote solar energy technology, and then Huang Ming, the founder of Huang Ming, went to the United Nations forum in 2006 as a guest speaker to publish China's solar energy sustainable development model, which is also the first Chinese entrepreneur to appear in the United Nations forum. Subsequently, in 2009, Huang Ming, as a representative of the National People's Congress, called for the inclusion of solar water heaters in the countryside, which officially opened the prelude to the development of solar water heaters in China.
 
However, its rise is also vigorous, and its death is also sudden. With the withdrawal of policy support, there are only three or four hundred solar water heater companies ten years ago, and the market share has fallen to about 1% of the entire water heater industry. Solar energy was the first to go out in the four-country melee with electricity, gas, and air energy water heaters. Affected by the weather, the limited installation space of urban households, and the high cost of maintenance are the main reasons for this cooling, but more importantly, compared with 10 years ago, there is no fundamental breakthrough in product functions and application experience.
 
The leaders in the solar energy industry, Huangming, Four Seasons Muge, and Sun Rain, are no longer concerned with product iteration, but on diversified expansion or finding another way, and the industry appears to be impetuous and speculative. In the past 10 years, Huangming has frequently searched the news, but most of them are in a negative posture, such as having a close relationship with Huang Sheng, the former vice governor of Shandong Province, who has fallen off the horse, exposing the "cheating and mending door" of Sunrise East, and the failure of the listing due to excessive non-operating assets.
 
However, "the emaciated camel is bigger than the horse", and Huang Ming still has many remarkable advantages in the technology itself. Huangming launched the UlTE polar ultra-cold tube in 09, which is still the world's first vacuum glass tube, and the parameters have almost reached the theoretical limit. The key to the principle of vacuum glass tube is high heat collection and low heat dissipation. According to the national standard of energy efficiency coefficient CTP for heat collection and heat dissipation, the polar ultracold tube has an ultra-high solar absorption ratio of 98%, an emission ratio of nearly 4.4%, and a CTP of 0.55, which is enough to boil water for drinking at -40°C in Antarctica. At present, the CTP of all other brands can only reach 0.5 at the highest, with a gap of more than 10%. The glass tube is also made of borosilicate 3.3 high transmittance glass, which has high strength, and the vacuum tube can withstand the impact of a steel ball with a diameter of 3cm falling from a height of 45cm without damage. Huangming's water heaters are equipped with the polar ultra-cold pipe.
 
At present, for domestic water heaters, Huangming has only launched the Golden Winter Crown series of solar water heaters and villa double gold solar water heaters. The technology used in villa double gold is very different from the Golden Winter Crown series, which is a super-large capacity version of the Golden Winter Crown series.
 
As the leading product of Huangming, the Golden Winter Crown series is quite different from other brands. Other brands of vacuum glass tubes all adopt the design of 58mm diameter tube length of 1.8m, while Huangming's vacuum tube is more slender, with a diameter of 55mm tube and a length of 2.1m, and the heat collection area of a single tube has been increased by 6%. The inner tank of the thermal insulation storage tank also adopts the largest thickness in the industry, using a stainless steel inner tank with a thickness of 0.5-0.6mm, which greatly improves the corrosion resistance. The series has 170L, 190L, 210L, 250L, 290L, 370L six capacity options, the price span is huge, 170L capacity products are priced at about 6700 yuan.
 
The installation of solar water heaters largely determines the use experience, and it is necessary to consult whether the residential property and the rooftop neighbors are allowed to install it before purchasing, and there are no similar troubles in the villas or homesteads of single-family families. Generally, flat roofs or ridge pitched roofs can be installed, and water and electricity connections need to be arranged in advance. The orientation and angle of the collector have a subtle effect on the collector effect, 10-15° due south and west is the golden orientation of the solar energy, and the tilt angle is theoretically optimal at the local latitude plus 5-10°. However, it is also necessary to "adapt measures to local conditions" according to the environment, taking into account factors such as snow sliding, generally speaking, the inclination angle of 45-51 ° of the manufacturer is a more reasonable inclination range. Huangming will give extremely detailed installation suggestions and guidance before installing the product to ensure that the installation is reasonable, and its warranty time is 3 years.