The hottest policy encourages the development of p

2022-10-02
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Will the phase change energy storage technology encouraged by the policy meet the development trend

the opinions mentioned that energy storage technologies and materials including phase change heat storage materials, high-temperature heat storage technology and energy storage system integration technology should be focused on, and a batch of energy storage technologies and equipment with industrialization potential, including large-capacity new molten salt heat storage devices, should be tested and demonstrated, which also made practitioners in the photothermal industry happy and encouraged

recently, the guiding opinions on promoting the development of energy storage technology and industry (hereinafter referred to as the "opinions") jointly issued by the national development and Reform Commission, the Ministry of finance, the Ministry of science and technology, the Ministry of industry and information technology and the national energy administration has attracted extensive attention from practitioners in the energy industry

among them, the opinions mentioned that energy storage technologies and materials including phase change heat storage materials, high-temperature heat storage technology and energy storage system integration technology should be focused on, and a batch of energy storage technologies and equipment with industrialization potential, including large-capacity new molten salt heat storage devices, should be tested and demonstrated, which also made practitioners in the photothermal industry happy and encouraged

for practitioners in the photothermal power generation industry, background information: sustainability development should not be unfamiliar with phase change heat storage materials. As a typical phase change heat storage technology, molten salt heat storage system has become the standard configuration for the development of photothermal power stations worldwide. However, in fact, there are many kinds of phase change heat storage materials, which are widely used in the field of light and heat, especially in the field of direct heat utilization. Although the cost is still relatively high compared with traditional fossil energy, its cleanliness and application flexibility determine its broad market development prospects. The "opinions" proposed to focus on the research of phase change heat storage materials and heat storage technology, and further make its future development prospects clearer. In the future, phase change heat storage technology is also expected to occupy a place in the photothermal market and energy storage market

introduction and advantages of phase change energy storage technology

phase change energy storage refers to the process of storing and releasing heat when the material has thermal physical rationality and the physical state has changed, such as when the solid becomes liquid and the liquid becomes solid. This energy storage method not only has high energy density, but also has the advantages of simple device, small volume, flexible design, convenient use and easy management

as for the economy of this technology, please refer to the economic comparison data of phase change energy storage technology and other common energy storage technologies provided by Beijing Huahou Energy Technology Co., Ltd. (hereinafter referred to as Huahou energy), which has been committed to the research of phase change energy storage technology for many years (see the table below)

the data shows that compared with various types of energy storage products, the initial investment of phase change energy storage is lower than that of other energy storage methods. The power grade of phase change energy storage products is 2kw-10mw, and the continuous action time is more than 1-24 hours. The energy storage efficiency can reach 92%, and the cost is 175-350 dollars/kw, which is lower than 350-400 dollars/kw of flywheel energy storage, 960-3600 dollars/kw lower than lithium battery. The service life is 15-30 years, and the number of cycles can reach 2700-3600 times. At the same time, it can consume garbage electricity and achieve energy conservation and emission reduction

in addition to the low initial investment, phase change energy storage also has many advantages, such as cleaning and environmental protection. In the application process, it has the following characteristics:

(1) environmental protection and pollution-free. No waste gas, waste water and waste residue are discharged during use

(2) energy saving and cost reduction. The system has high conversion efficiency. Combined with the price advantage of valley value electricity, it can improve the conversion efficiency of power resources and reduce the use cost

(3) convenient construction. For example, Huahou energy phase change energy storage system has the characteristics of modularization, combined installation and so on, which occupies a small area on the ground and has flexible installation methods

(4) it has a wide range of applications and intelligence, and can effectively combine a variety of different end systems. Taking Huahou energy phase change energy storage system as an example, by optimizing the phase change energy storage HVAC system and adjusting the series parallel combined operation mode of energy storage equipment and HVAC system, the cold and heat supplied can be adjusted according to different ambient temperatures, so as to achieve energy conservation, cost reduction and accurate heating. Combined with Huahou energy intelligent control system, unattended and intelligent operation can be realized

a wide range of applications

as mentioned above, high-temperature phase change energy storage technology has been widely used in the field of photothermal power generation, but under the different needs of multiple scenarios in the field of thermal utilization, phase change energy storage technology needs to be more diversified to meet various use needs, and leading enterprises need to be encouraged and guided to play a demonstration and leading role in transformation and upgrading, and continue to develop and innovate to reduce use costs

after years of research and development, Huahou energy has achieved full coverage of temperature range in this field with its original combination of phase change energy storage materials, including passive cold chain (-18 ℃), phase change cold storage (8-9 ℃), passive energy-saving building (22-29 ℃), energy storage heat pump (45-58 ℃), district heating (75-80 ℃), central heating (150-170 ℃), medium and high temperature waste heat recovery (above 200 ℃). By using the exclusively developed phase change materials, combined with the storage of the cold and heat generated by electric boilers, gas boilers, heat pumps, ice makers and other equipment, it is used to provide domestic hot water, winter heating and summer cooling, cold storage refrigeration, etc. Up to now, Huahou energy has developed a series of phase change energy storage heating and cooling products such as O, O, o-plus, and launched cloud control system o and app product color common fault 3:o matching these systems

with the diversification of phase change energy storage materials and the maturity of technology, there are a variety of mature heating solutions (valley value electric energy storage, waste electric energy storage, solar energy storage), cooling solutions (valley value electric energy storage, waste electric energy storage, solar energy storage), waste heat recovery phase change energy storage heating solutions, phase change energy storage drying solutions, phase change energy storage constant temperature swimming pool solutions Phase change energy storage can generally be used for more than 150000 times of multi-stage cold and hot continuous supply solutions, which have been applied to commercial projects

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