The basic form of solar heat pumps is broadly divided into heat pump power (W), which utilizes solar energy driven by the sun and a low-temperature heat source (QH), and solar energy used by the solar heat source.
A solar-driven heat pump uses a solar collector with a high heating temperature of 100°C (or so), and absorption refrigeration using a regenerative Rankine cycle boiler or renewable energy absorber technology. Thermodynamically, the conversion of solar energy to generate electricity, as well as drive (W), are equivalent to freezers, known as solar thermal refrigeration. Since all heat (QH) released from the high-temperature heat source is discarded from cooling towers, it can be said that the dark side is the direct use of solar energy to heat water, and fossil boilers as an auxiliary heat source, which is common. A solar-driven heat pump effectively utilizes high solar temperatures. The system is complex and expensive, and additional power supplies present many challenges. A solar heat pump, also known as a heat source heat pump, must be externally driven by an electric motor. The collector side of the heat pump is designed for low heating temperatures and high collection efficiency, which, due to the higher refrigerant boiling point, can improve the heating coefficient of performance (COP = QH/W). However, the disadvantage is that it does not directly utilize solar energy.
"Solar heat source pump" is synonymous with solar heat pumps. The latter, since most solar heat and heat pump systems use a combination of solar heat and heat pumps, can be divided into the following three types.
(1) Series type: Series solar heat pumps for use in devices, and solar heat pumps are equivalent. This results in a low collector temperature, eliminating the need for a transparent glass or adiabatic collector, reducing costs. The Uapa Di solar heat pump series is the first solar home system to utilize the device. During heating, the antifreeze reservoir transfers heat from the collector to the low-temperature side of the heat pump. The Sun heat pump (refrigerant) heat exchanger coils are endothermic (refrigerant). The high-temperature side of the heat exchanger is heated during cooling. The collector uses the heat overnight, cooling the high-temperature side of the heat exchanger, and the low-temperature side of the heat storage tank is used for cooling. Radiant cooling and heating consoles are used, using heat recovery in the hot water bath heat pump. Standard technical specifications exist.
Direct evaporation of the collector allows the refrigerant to be exchanged with the heat pump collector, which can be a less complex heat exchange structure. This type of refrigerant collector is called a direct expansion collector. Its advantage is that it does not freeze the water in the collector or corrode the metal. However, chlorine atoms, such as CFCs or HCFCs, deplete the ozone layer. Even if HFC refrigerant substitutes also have a high global warming coefficient, the collector air temperature drops to the outside air temperature, and the airflow heat can also be retained in the collector.
(2) Shunt. In solar applications, using an additional heat source, an air source heat pump is more energy efficient than fossil fuel boilers, suitable for energy savings. This is called parallel solar heat pumps. However, in non-sunlit environments, due to low outside air temperatures, the heating capacity of the air source heat pump will reduce the machine's icing in the house, efficiency will be lower, and defrosting will become necessary. Without an auxiliary heat source, some cooling occurs when air source heat pumps for air conditioners are operating. Parallel applications include solar hot air collectors for heating and hot water heating, gravel heat storage, an air source heat pump, and an electric water heater combination unit.
(3) Dual energy type. This is a series and shunt type. The collector heats the collector at a high temperature, providing heat for direct use as a heat pump heat source. When the collector temperature is low, the series run, the collector, and the air source heat pump system are started. Two types of solar heat and air source heat are used to power the heat pump, so-called dual energy type. Dual energy is energy-efficient, but complex and difficult to control. Because the series type cannot be counted, лектор кратко и недостатки. Кроме того, в качестве наиболее подходящего в качестве вспомогательного источника тепла, воздуха тепловой насос, но есть и проблемы. Представить заявление пример внутреннего тепла водонагреватель с тепловым насосом наружного блока источника в воде и воздухе тепло два вида теплообменников и горячего водоснабжения вспомогательного источника тепла.
