Consider a PV array charging batteries for an
off‐the‐grid, stand‐alone system near Perth. You plan to run everything in the
house on 240 V AC.
a.
Suppose the load is estimated to consist of
the following 240 V AC appliances. Supplement load data given below with values
from Table 9.10 in the textbook.
i. A
19 cu. ft. Refrigerator/freezer
ii. A
1000 W microwave oven used 15 minutes/day
iii. Five 20‐W compact fluorescent lamps, each used
8 hours per day
iv. A
horizontal‐axis washing machine used 3 hours/week
v. A
24‐V well pump that delivers 288 gal/day at 1.6 gpm of water from 100 ft depth
vi. A
19‐in. colour TV used 2 hrs/day and drawing standby power the other 22 hrs/day
vii.
A satellite receiver system for the TV, used 2
hrs/day and in standby mode 22 hrs.
viii.
A laptop computer used 4 hrs/day
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