Technological innovation accelerates the upgrading of solar thermal utilization industry

The development of solar thermal utilization industry has gone through the technological progress of "from hot water to thermal energy", "from civil use to industry", and "from scattered to integrated". With the innovation and breakthrough of technology, in the next few years, the solar thermal utilization industry has the conditions for industrial upgrading from "medium and high temperature heat utilization", "industrial thermal energy utilization" to "solar building integration".

Filling the technical gap of 150℃ temperature zone

In the 21st century, China's solar energy entered a period of rapid development. A large number of solar energy companies emerged and once fell into an industry cycle of scrambling for land and low-price competition. As a result, before the medium-temperature technology, all solar energy applications were limited to hot water utilization. It was not until 2010 that the introduction of solar all-glass vacuum tubes and vacuum tube collectors, which were blank in the 150℃ temperature zone technology, truly realized the transformation of solar energy applications from hot water to thermal energy, opened up multiple application fields such as solar heating and cooling, seawater desalination, and industrial and agricultural heat, and became an important milestone in the utilization of solar thermal energy - it can not only provide hot water, but also generate electricity efficiently.

In fact, under the core component vacuum tube collector "in power", solar water heaters also experienced a typical transition period between CPC-U vacuum tube collectors and titanium-coated "titanium gold tubes". The CPC-U vacuum tube collector successfully developed by Linuo Group at that time could provide hot water at a maximum of 120℃, which not only laid the foundation for the large-scale promotion of solar water heating projects, but also catalyzed the birth of medium-temperature heat collection technology.

Industrial heat energy under integrated thermal system

In the low-carbon era, energy conservation and emission reduction have become one of the focal issues of society, and building energy conservation and industrial energy conservation are the top priorities of the country. In the context of industrial energy consumption accounting for 70% of the total energy consumption of the whole society, the application of solar industrial thermal energy is a top priority, and the reality that industrial heat is concentrated in 80℃-250℃ has also become a difficult hurdle for solar energy companies.

Shen Wenming, general manager of Linorite, said: "How to apply solar energy to industrial fields that consume more energy is a key to solving the global energy crisis. Boilers are the largest energy-consuming equipment in industry. Mastering the application of solar boiler heat energy means controlling the future solar energy market in the industrial field to a large extent."

Despite numerous difficulties, in May this year, Linorite successfully developed a solar boiler system based on solar CPC medium temperature technology and a newly developed boiler integrated thermal system. The integrated thermal system under this medium temperature technology can collect heat in an area of ​​5,200 square meters, save 1,156 tons of standard coal, and reduce carbon dioxide emissions by 3,005 tons, completing the fundamental transformation of the solar energy industry from civilian to industrial.

Split technology perfectly combined with architecture

Compared with the phased research and development of solar thermal utilization technology, "building integration" is permeating the development process of the entire industry. Many years ago, when water heaters were still only in the civilian stage, in order to solve many property disputes caused by disorderly installation of solar energy and meet the diversified needs of buildings, water heater companies were also given higher requirements.

Linorit timely proposed the forward-looking concept of combining hot water with buildings, introduced, digested and absorbed Germany's split solar thermal utilization technology, developed the first split solar water heating system that can be perfectly combined with buildings, established the "simultaneous design, construction, acceptance and management" technical standards for the integration of solar energy into the field of architecture, and built the industry's only "National Residential Industrialization Base", developed nine solar water heating systems according to different building needs, and launched 17 building energy-saving solutions. This solution, which relies on medium-temperature heat collection technology and focuses on solving the problem of solar energy's all-round solution to the energy consumption of hot water, heating, air conditioning and lighting in buildings, will reduce the building energy consumption ratio of hot water, air conditioning and heating from 65% to less than 50% in my country's more than 40 billion square meters of buildings, taking the first step towards "solar building integration".