1. First of all, I personally think that flat panel solar energy cannot be chosen in areas north of the Yangtze River, because flat panel solar energy can only be applied to temperate and tropical areas . The solar energy of flat panels during the day is better than that of vacuum tubes. It is higher, but at night, the heat dissipation effect is almost the same as the heat collection effect. Therefore, it is recommended to choose vacuum tube solar power. You can consider Huangming Solar as your first choice.
2. For auxiliary energy, choose electricity. After all, it's much more convenient. Because, if we choose solar energy with evacuated tubes, electrical energy assistance will not be used too much.
It is theoretically possible to use solar energy to provide underfloor heating. However, the biggest problem facing this topic is aCurrently faced is how to convert and store solar energy during the day for use at night.
Because in most areas the sunshine is strong during the day and the indoor temperature is cold at night. The characteristic of solar energy is that it is highly available during the day and is virtually unavailable at night. To put it simply: you need heating at night, but there is no sun. Energy conversion and storage are therefore important issues in the development and use of solar energy.