Energy Audit and Feasibility of Solar PV Energy System: Case of a Commercial Building

Table 2

Current energy use for the building.

Appliance	Power rating (W)	Quantity	Connected load (W)	Operating time (h)	Daily energy (kWh)
Refrigerator	120	4	480	24	3.4
Fan	75	7	525	6	3.15
Air conditioners	1800	5	9000	5	45
Printers	1200	3	3600	6	21.6
32 TV	120	4	480	7	3.36
Internet router	5	3	15	10	0.15
Computers	100	5	500	7	3.5
CCTV cameras	15	9	135	12	1.62
Kettles	1200	4	4800	1	4.8
Rice cookers	1200	2	2400	0.75	1.8
Laminator	1300	3	3900	2	7.8
Emergency bulbs	6	12	78	12	0.936
Incandescent bulbs	60	15	900	8	7.2
Total energy need in a day					104.316
Total energy need in a month (31 days)					3233.796
Total energy need in a year (365 days)					38075.34