In active SPRBs, the receive, conversion and transmit of solar energy are relied on solar heating equipment and power systems, such as solar collectors and solar pipelines. At the same time, once encountered bad weather situations, electricity should be provided as auxiliary energy. Compared with passive SPRBs, active SPRBs are relatively complex and high cost [18]. Based on the above reasons,
passive solar energy utilization will be the main way of solar energy utilization in residential buildings in a long time following. For the building layout, the best solar
orientation can be obtained by ecological ECOTECT Software via loading the local geographic information, as shown in Fig. 3. In general, the heating surface should be
within plus or minus 15 of the best orientation to get the most satisfied solar radiation.