Legal. According to national energy saving and environmental protection regulations, residential buildings with a height of 12 floors or less must be equipped with a certain proportion of solar energy installations if they meet the requirements of energy saving and environmental protection, they can be accepted. otherwise they will not be accepted. As for the royalty, it must be issued by the beneficiary, that is to say the developer can distribute the royalty in the sale price, or it can be distributed separately. This is a national regulation. Owner consent is not required for installation. Although a tender and public market are required, it is at the discretion of the developer.
There are standards, including:
Standards for performance testing of domestic solar water heaters;
Quality standards for tubes empty completely in verre;< /p >
Standards for flat solar collectors;
Standards related to pressurized and non-pressurized water tanks;
Local standards for solar collectors and all-glass vacuum tube dishes - plate solar water heaters.
Here are some relevant standards:
1.GB/T?19141-2011? “Technical conditions for domestic solar hot water systems”
2. UK? 26969-2011? "Energy efficiency limit values and energy efficiency levels of domestic solar water heating systems"
3.GB/T18713-2002 "Test methods for thermal performance of solar water heating systems domestic solar water heaters "
4.GB/T20095-2006 "Performance evaluation specifications of solar water heating systems"
5.GB/T 17049-2005 "Sensors all-glass vacuum solar heaters"
6.NY/T651 -2002 "Technical specifications for the installation, operation and maintenance of domestic solar water heaters"
7.NY/T343-1998 "Technical conditions for domestic solar water heaters"
8.NY/T514-2002 "Water storage tank for solar water heaters domestic solar water"