【Abstract】：As the world gradually calls for energy saving and environmental protection, more and more people use solar energy products, and solar air conditioners are gradually being used and popularized. It is not only environmentally friendly, but also can save energy and reduce electricity bills.

[Abstract] Due to the addition of chlorine and bromine found in swimming pools and spas, and the flow requirements on the pool/hot tub side, flat plate solar heat exchangers are not suitable. A special high-flow cell heat exchanger should be used. These heat exchangers can handle higher secondary si

【Abstract】
When fuel and electricity costs rise, the best solution is to install a solar power system. In areas with good sunlight, households installing solar power systems have become very common. Use solar energy to convert it into electrical energy to meet household electricity needs. Nevertheless, first we need to have a basic understanding of solar power system.

【Abstract】Selection of inverter power devicesAt present, the domestic photovoltaic power generation system (Photovoltaic System, PVS for short) is mainly based on the DC system, but the most common electrical load is the AC load, which makes it difficult to popularize the DC-powered photovoltaic pow