Research Article

Energy Analysis of a Complementary Heating System Combining Solar Energy and Coal for a Rural Residential Building in Northwest China

Table 2

Durations and results for and for per kg mass of coal.

/W/m2 for per kg mass of coal/MJ/kg
DurationDuration/(kg coal)/(kg coal)

17:00 pm on 12 to 2:30 am on 13 Dec, 201432.39 to 11 Dec, 20145.26.4
17:30 to 24:00 pm on 2nd Jan, 201542.14 Jan, 20155.9
17:00 to 23:00 pm on 5 Jan, 201536.138.16 Jan, 20157.2
17:00 to 23:00 pm on 5 Jan, 201544.017 Jan, 20157.5
19:50 pm on 15 to 1:50 am on 16 Feb, 201536.127 to 28 Jan, 20157.1
31 Jan to 3 Feb, 20156.5
6 Feb, 20155.5