The Weifang City Economic and Information Technology Committee of Shandong Province disclosed recently that the experts highly praised the development and utilization of new energy in Weifang City at the ground source heat pump unit technology appraisal meeting held by the Ministry of Economics and Information Technology. The "water-source heat pump unit based on energy-saving thermostats" undertaken by the company of Vodgren was recognized as "the international leader in product technology."

In recent years, Weifang City has made accelerating the use of new energy as an important measure to change the way and adjust the structure. It has highlighted the construction of wind energy, solar energy, and ground-source heat pumps, and made breakthroughs in the development and utilization of new energy. At present, the application area of ​​ground source heat pump technology in Weifang City is 1.73 million square meters, which can save 23,900 tons of standard coal annually. In order to speed up the application of geothermal resources, Weifang City has issued support policies and provided support from capital, technology, and talent. The company has collaborated with national, provincial and municipal research institutes to overcome the energy-saving and temperature-increasing technology of ground-source heat pump units, increase the condenser water temperature through additional equipment, and increase the temperature of water entering the evaporator, thus realizing the water source heat pump unit at cryogenic temperature. Reliable and efficient heating operation. This technology has two patents, which can save energy by 10% to 20%, thus ending the history of geothermal heating in low temperature water areas.