Air-source heat pumps have not yet been clearly defined. They are called high-temperature heat pumps because the outlet water temperature is higher than that of common air-source heat pumps.
The difference between high-temperature heat pumps and common air-source heat pumps
1. Different energy efficiency ratios
High-temperature heat pumps require the outlet water temperature of the heat pump to be higher than that of conventional ones. As we all know, the higher the outlet water temperature of the heat pump, the more heat is required, but the thermal efficiency decreases. Conventional air-source heat pump water heaters, under certain working conditions, have a relatively high thermal efficiency of 3-5 when the outlet water temperature is 40°C; once the temperature reaches 50°C, the thermal efficiency becomes very low, below 3, and some are even less than 2. High-temperature heat pumps fully consider the issue of thermal efficiency at the beginning of their design. If heat pump technology cannot solve the problem of thermal efficiency; then, as an alternative new energy source, there is no advantage in energy saving. Therefore, it is necessary to select a working fluid with high thermal efficiency to fully reflect the high efficiency of heat pump products. Applying this working fluid, under rated working conditions, when the outlet water temperature is 40℃, the thermal efficiency is nearly 30% higher than that of common air source heat pumps; when the outlet water temperature is within 60℃, it is still very high, which is equivalent to the outlet water temperature of common air source heat pumps at 40℃. The outlet water temperature of high-temperature heat pumps can maintain a thermal efficiency of more than 3 at 85℃. Therefore, if high-temperature heat pump technology is applied to common domestic hot water needs, the thermal efficiency becomes very high, which is a standard that must be achieved and a benefit that consumers can enjoy. More energy-saving products mean spending less money to obtain better use value.
2. Different outlet water temperature
For common air source heat pumps, the outlet water temperature can only be controlled within 60℃. Beyond this temperature range, the life of the heat pump will be greatly shortened, and the failure rate will become very high during operation, affecting normal production and life. When the outlet water temperature of the high-temperature heat pump is within 85℃, the heat pump is still very stable and the thermal efficiency is still so high. When the outlet water temperature is within 60℃, the high-temperature heat pump is more energy-efficient than the common air source heat pump; moreover, it can expand the use range of temperature and save energy at 60℃-85℃, thus becoming an indispensable alternative energy heat pump in future industrial production.
3. Operation stability
The operation stability of the heat pump is closely related to the design selection and technical matching. For high-temperature heat pumps, various tests are first carried out according to the working fluid found. When various indicators can meet the requirements of high-temperature heat pumps, the required compressor type is selected according to the characteristics of this working fluid. Then we go to find professional compressor manufacturers and let them design and manufacture compressors according to our requirements to ensure that our design can be realized. In addition, the supporting products provided by various well-known suppliers are used to complete the integration of high-temperature heat pumps. Of course, the control system cannot be ignored. We have developed different control systems according to different products to fully ensure that the high-temperature heat pump is environmentally friendly, efficient and stable in use. From design to manufacturing, common air source heat pumps consider common requirements, so the selection of raw materials is different from that of high-temperature heat pumps: the raw materials of common air source heat pumps are configured according to common working conditions and cannot meet the requirements of high temperature and high pressure conditions. When the outlet water temperature requirement is relatively high, the failure rate of the system will increase greatly; high temperature heat pumps must choose high temperature and high pressure materials that can ensure the working conditions of high temperature heat pumps, which can fully meet the requirements of high temperature and high pressure.
4. Scope of application
In addition to the field of normal temperature domestic hot water where common air source heat pumps work, high temperature heat pumps can also be reflected in industrial heat. There is a broad market in the preheating and waste heat recovery and reuse of industrial steam boilers, building heating, high-temperature drying and baking of food, and drying and baking of other industrial products. High temperature heat pumps are increasingly favored by large and medium-sized manufacturers in drying and drying.
Air-source heat pumps have not yet been clearly defined. They are called high-temperature heat pumps because the outlet water temperature is higher than that of common air-source heat pumps.
The difference between high-temperature heat pumps and common air-source heat pumps
1. Different energy efficiency ratios
High-temperature heat pumps require the outlet water temperature of the heat pump to be higher than that of conventional ones. As we all know, the higher the outlet water temperature of the heat pump, the more heat is required, but the thermal efficiency decreases. Conventional air-source heat pump water heaters, under certain working conditions, have a relatively high thermal efficiency of 3-5 when the outlet water temperature is 40°C; once the temperature reaches 50°C, the thermal efficiency becomes very low, below 3, and some are even less than 2. High-temperature heat pumps fully consider the issue of thermal efficiency at the beginning of their design. If heat pump technology cannot solve the problem of thermal efficiency; then, as an alternative new energy source, there is no advantage in energy saving. Therefore, it is necessary to select a working fluid with high thermal efficiency to fully reflect the high efficiency of heat pump products. Applying this working fluid, under rated working conditions, when the outlet water temperature is 40℃, the thermal efficiency is nearly 30% higher than that of common air source heat pumps; when the outlet water temperature is within 60℃, it is still very high, which is equivalent to the outlet water temperature of common air source heat pumps at 40℃. The outlet water temperature of high-temperature heat pumps can maintain a thermal efficiency of more than 3 at 85℃. Therefore, if high-temperature heat pump technology is applied to common domestic hot water needs, the thermal efficiency becomes very high, which is a standard that must be achieved and a benefit that consumers can enjoy. More energy-saving products mean spending less money to obtain better use value.
2. Different outlet water temperature
For common air source heat pumps, the outlet water temperature can only be controlled within 60℃. Beyond this temperature range, the life of the heat pump will be greatly shortened, and the failure rate will become very high during operation, affecting normal production and life. When the outlet water temperature of the high-temperature heat pump is within 85℃, the heat pump is still very stable and the thermal efficiency is still so high. When the outlet water temperature is within 60℃, the high-temperature heat pump is more energy-efficient than the common air source heat pump; moreover, it can expand the use range of temperature and save energy at 60℃-85℃, thus becoming an indispensable alternative energy heat pump in future industrial production.
3. Operation stability
The operation stability of the heat pump is closely related to the design selection and technical matching. For high-temperature heat pumps, various tests are first carried out according to the working fluid found. When various indicators can meet the requirements of high-temperature heat pumps, the required compressor type is selected according to the characteristics of this working fluid. Then we go to find professional compressor manufacturers and let them design and manufacture compressors according to our requirements to ensure that our design can be realized. In addition, the supporting products provided by various well-known suppliers are used to complete the integration of high-temperature heat pumps. Of course, the control system cannot be ignored. We have developed different control systems according to different products to fully ensure that the high-temperature heat pump is environmentally friendly, efficient and stable in use. From design to manufacturing, common air source heat pumps consider common requirements, so the selection of raw materials is different from that of high-temperature heat pumps: the raw materials of common air source heat pumps are configured according to common working conditions and cannot meet the requirements of high temperature and high pressure conditions. When the outlet water temperature requirement is relatively high, the failure rate of the system will increase greatly; high temperature heat pumps must choose high temperature and high pressure materials that can ensure the working conditions of high temperature heat pumps, which can fully meet the requirements of high temperature and high pressure.
4. Scope of application
In addition to the field of normal temperature domestic hot water where common air source heat pumps work, high temperature heat pumps can also be reflected in industrial heat. There is a broad market in the preheating and waste heat recovery and reuse of industrial steam boilers, building heating, high-temperature drying and baking of food, and drying and baking of other industrial products. High temperature heat pumps are increasingly favored by large and medium-sized manufacturers in drying and drying.
