It is perfectly possible to use a medium temperature solar system for heating, and the temperature can be maintained between 18 and 25 degrees. However, your house is only more than 100 square meters and it is not cost-effective. use a solar heating system alone. The cost is estimated to be more than 20,000-30,000 yuan, this does not include pipes, terminal radiators, etc.
Superconducting heaters can use solar energy or fuel. It differs from ordinary radiators in that the fluid circulating inside the radiators is different. Water circulates in ordinary radiators, but not in superconducting radiators. You can choose the heat source yourself, either solar energy or fuel oil.