Experimental Study on Productivity Performance of Household Combined Thermal Power and Biogas System in Northwest China

Table 4

Calculation of heat consumption by building footprint.

Building footprint	/W (m^2·K)		Area	(°C)	(W)
External wall	0.36	0.9	120	16.6	645.4
External window	2	0.9	12	16.6	358.6
Door	3	1.1	5.2	16.6	284.8
Ground	0.47	1	64	16.6	499.3
Roof	1.45	1	64	16.6	1540.5
Total					3328.6

-transfer coefficient. factor. consumption.