Total consumption

Table 5.25 gives a summary of all the electrical appliances to be supplied by the main PV system. As mentioned earlier, the PV pump will be supplied by a separate system.

Table 5.25 Electrical consumption of the main PV system

Voltage

Power in use (W)

Conversion

efficiency

Power adjusted by efficiency (W)

Duration of use/day

(h)

Electrical

consumption

(Wh)

Milking

machine

24 V DC

1120

1120

2400

Lighting

24 V DC

120

120

5

600

Ventilation

24 V DC

20

20

6

120

Television

12 V DC

60

0.8

75

4

300

Refrigeration

24 V DC

70

70

500

Computer

230 V AC

150

0.85

188

2

376

Power tool

TOTAL

230 V AC

500

0.85

588

2181

1/2

294

4590

Updated: August 24, 2015 — 3:17 pm