Fig.9 shows the room temperatures of the living room (LD) and the south children’s room (CBS) in February 17. The room temperature of LD in Case A (no adjacent houses) rose to about 30°C by the incident solar radiation from the south window in the daytime. The room temperature of LD in Case B (adjacent houses) was 20°C of preset temperature in the daytime. The room temperature of LD in Case C (adjacent houses and active solar heating system) was about 23°C to midnight. Fig.10 shows heating load and solar energy used to floor heating in winter sunny day (February 17). Daily total heating loads for Case A, B and C were 2.75kWh, 6.30kWh and 5.97kWh, respectively. Daily total heating loads for Case B and C increased by 2.3 times and 2.1 times compared with the Case A, respectively. Daily total solar energy used to floor heating in

Fig.11 shows the room temperatures of LD and CBS in August 9. The room temperature of LD in 15:00 for Case A and Case B, C were 35.5°C and 32.8 °C, respectively. The room temperature of CBS in Case A was high about 3.3°C at the maximum compared with it in Case B and C at the time of non-air-conditioning. Fig.12 shows cooling load in summer sunny day (August 9). Daily total cooling loads for Case A and Case B, C were 31.57kWh and 20.55kWh, respectively. Daily total cooling load for the adjacent Cases B and C reduced by 38% against the no adjacent Case A.