Existing problems in the promotion and application of water source heat pumps in my country
As a new type of cooling and heating method, water source heat pump should be quite mature and no problem from a technical point of view, especially from the point of view of heat pump units. However, considering China's national conditions and the promotion and application of water source heat pump cooling and heating as a whole system, there are still some problems:
1. Water use policy
In order to protect the limited water resources, my country has formulated the "Water Law of the People's Republic of China", and cities have also formulated their own "Urban Water Management Regulations." These policies all emphasize water use approvals and water charges. However, there are no requirements for similar water source heat pump technology in the approved standards, so water source heat pumps are easily restricted by water consumption indicators. Even if the water use approval is passed, because some places charge for the extraction and discharge of water sources twice, and the standards for receiving fees are not uniform across the country, the result may be high water charges, making the operation of water source heat pumps insufficient for energy-saving costs. Increased water charges , The economic change of water source heat pump.
Therefore, the promotion of water source heat pump requires the government to adjust the policy of water source use from the perspective of sustainable development, comprehensive energy, environmental protection and resource considerations, and re-determine how the water source is managed and charged to promote its large-scale development.
2. Water detection and exploitation technology and costs
In China, the current detection and exploitation technology of water sources, especially urban water sources, should be improved. One of the prerequisites for the application of water source heat pumps is to understand the situation of local water sources. In the early stage of use of water source heat pumps, the status of water sources must be checked on the spot. Investigate whether there is water in the groundwater, whether it will be sufficient, and whether the site is suitable for well drilling and recharge. The improvement of detection technology and the reduction of costs will promote the better application of water source heat pump units.
3. Groundwater recharge technology
If the water source heat pump uses groundwater, the recharge of the water source must be considered. For the recharge technology, it must be considered in combination with the local geological conditions to consider the recharge technology. We don't know much about the geological structure of different regions, which also restricts the popularization and use of water source heat pump units.
4. Design of the overall system
As a system, the energy saving of the water source heat pump system must be considered from all aspects. If the water source heat pump unit can provide more energy with a smaller water flow, but the system design improper selection or improper control of energy-consuming equipment such as water pumps, It will also reduce the energy saving effect of the system. Similarly, if the unit provides high water temperature, but the end of the designed air conditioning system is not considered accordingly, it may also make the effect of the entire system worse or increase the initial investment of the entire system. Therefore, the promotion and application of water source heat pumps requires more people from various fields to work together to participate in government policies, host design and manufacturing, system design and operation management and other aspects.