The "dual-carbon" goal is a huge opportunity and challenge for China's energy development. To achieve carbon neutrality, it is necessary to promote the energy transition, promote the energy system from fossil energy-based carbon-based energy to renewable energy-based zero-carbon energy, heat pumps, as a renewable energy equipment driven by electricity, access to the environmental media, waste heat in the low-grade energy, to provide high-grade heat that can be utilized, heat pumps can be obtained for every 1 portion of energy consumed 3 times or even more heat, largely improving the efficiency of energy use, is a highly energy efficient clean energy products. The heat pump can obtain 3 times or even more heat for every 1 portion of energy consumed, which largely improves the efficiency of energy utilization, and is a kind of energy efficient and clean energy product. In addition, heat pump technology for heat recovery, as well as the use of different technologies to make full use of the waste heat source, can effectively save a lot of energy resources for the country. Heat pumps can not only take into account both summer cooling and winter heating and hot water production, but also play a role in many areas of the national economy such as industrial and agricultural production, national defense construction, etc., with great potential for application.
Application of Heat Pump Unit
Heat pump unit is an air-conditioning device that uses water/soil/air/industrial waste heat/sewage water as the heat source for heat pump-type heating, and the heat source can be surface water such as rivers and lakes as well as groundwater and soil. As an energy-saving and environmentally friendly solution, heat pumps can certainly play a positive role and make more contributions to the country's environmental protection and livelihood security.
Industrial production, a large number of light industrial production, including textiles, food, leather, etc. The use of heat pump units to replace coal-fired boilers in industrial production can effectively realize low-carbon production.
Drying links in the industrial sector, heat pumps can also be prepared in which the required heat. Such as drying of agricultural products, color printing ink fast drying and so on. The use of heat pumps as a heat source to improve the precision of process control, environmental cleanliness and product quality, and its operating costs close to coal-fired boilers, the overall economic benefits are better than coal-fired.
There are some meat processing plants, you can recover the cold storage refrigeration waste heat, and then through the heat pump to enhance the temperature, the preparation of hot water and steam for production; food processing plants can extract the product cooling process of the exhaust heat, the use of heat pumps to warm up, the preparation of steam for production; there are also printing and dyeing, textile, tanning, papermaking, pharmaceuticals, etc., it is possible to use heat pumps from the exhaust of hot and humid air or hot water in the heat extracted from the production of the production of a high temperature heat. Higher temperature heat.
Application of building energy, northern towns and cities in winter heating heat demand is about 5 billion gigajoule per year, at present the main coal-fired gas-fired cogeneration and coal-fired boilers (accounting for about 80%) to provide, as well as various types of gas boilers and electric heat pumps (accounting for about 5%). With the development of urbanization, the heating load soars, the application of electric heat pumps there is still a lot of room for growth.
At the same time, heat pumps can also provide heating heat source for the centralized heating can not reach the area, especially south of the Yangtze River, the need for heating only two or three months a year, not suitable for the establishment of a huge centralized heating pipe network, heat pumps is one of the best ways to solve the winter heating. In particular, the building insulation performance is improving, the need for heat is less and less, centralized heating may not be economical, electric heat pump distributed heating will be able to play its superiority. In rural scattered low-density buildings, ground source heat pumps, to "part of the time, part of the space" approach to heating is most appropriate.
Domestic hot water preparation. Domestic hot water is generally around 50 degrees Celsius, which is the applicable range of electric heat pumps. When the COP value (how many degrees of heat through the heat pump one degree of electricity to enhance the number of degrees of heat) is equal to 3, the price of electricity is 0.90 yuan / kWh, its energy costs are lower than gas 3 yuan / standard cubic meters of gas water heaters.
Future Development Outlook
Heat pumps as a refrigeration and air conditioning industry, an emerging product category, through the last few years of strong support and incentives from the state and local governments, in place of traditional coal-fired heating and other occasions of increasing application. According to the current experience in the application of heat pumps, according to the user's heating, hot water and refrigeration and air conditioning needs, combined with the building characteristics, changes in the climate environment and the energy-saving and environmentally friendly advantages of heat pumps, with the system, the end of the comprehensive transformation of the governance, to provide the appropriate comprehensive technical solutions have great energy-saving value and potential. The future road to clean heat supply, it is more necessary to coordinate the planning and management, according to local conditions, choose renewable energy as the heat source of heat pumps, pay attention to and promote the comprehensive utilization of various energy sources, air source, sewage source, sea water source, river and lake water source, waste heat and waste heat, solar energy, etc. appropriate combination of the use of overcoming the shortcomings of a single source of heat, so as to fully increase the comprehensive and integrated efficiency of the heating and cooling to achieve optimal energy-saving benefits! The best energy-saving benefits are achieved.
