Before sharing about the breakeven point, we would want our readers to know about the benefits of solar ventilation blower first.
Benefits of solar ventilation blower
1) To suck up air or odor in the kitchen, storeroom or bathroom
2) Installed to prevent heat from under the roof
3) Increase the air circulation inside the building
In addition, solar ventilation blower can be installed in cars or passenger boats as well
Solar ventilation blower is a ventilation fan that is widely used because of its low price resulting in a short break-even point when compared to other general ventilation fans.
Calculation of breakeven point of solar ventilation blower
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A typical ceiling ventilation fan using 220AC, 25w electricity the average price is 2,500 baht/set.
QTY 5 sets: 2500 × 5 = 12,500 baht
Solar ventilation blower model SB4100, 100w at the price of 13,400 baht/set
Electricity cost calculation of general ceiling-mounted ventilation fans 220AC, 25w, amount 5 sets.
Total power: 25 × 5 = 125w
Required: 8 working hours/day, 1,000 watts of power = 1 unit, Electricity cost 1 unit = 4 baht.Power
Working hour/day
Electric power x hour/day
Unit
Electricity cost/day
Electricity cost/year
125
8
1,000
1
4
1,460
Breakeven point (13,400 – 12,500)/1,460 = 0.62 year or 0.62 × 12 = 7.39 months.
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A typical ceiling ventilation fan using 220AC 25w electricity, the average price is 2,500 baht/set.
Solar Blower Ventilation Fan Model SB4020 20w price 2,600 baht/set
Electricity cost calculation of a typical ceiling fan
Required: 8 working hours/day, 1,000 watts of power = 1 unit, Electricity cost 1 unit = 4 baht.
Power
Working hour/day
Electric power x hour/day
Unit
Electricity cost/day
Electricity cost/year
25
8
200
0.2
0.8
292
Breakeven point: (2,600 – 2,500)/292 = 0.34 year or 0.34×12 = 4.1 months
Therefore, Solar ventilation blower is considered an efficient renewable energy equipment with a breakeven point of about 4-8 months, while helping to prevent heat from under the roof.
- By: DWA COOL
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