This time we're reviewing the main topics of our latest lessons:
- TCO (PV,solar thermal,wind)
- ROI (PV,solar thermal,wind)
- kW/day
- V=IxR
- P=I^2xR
- P=V^2 : R
- Kill-a-Watt
now, we're inventing two fictional questions about any of these topics:
1) We have a PV that costs 1000$ and has an amperage of 3,34 A and a voltage of 120 V, HELCO pays us .50 $ for every kW/h generated every day, the PV has a lifetime of 15 years and works for 5 hours every day, calculate the ROI and the TCO.
2)We are using three different types of light bulbs that generate the same amount of light, a conventional bulb (0,50 Amperes), a CFL bulb (0,31 Amperes) and a LED lamp (0,05 Amperes), supposing that our outlets are intended to generate 120V, calculate the quantity of Watts used and determine what's the most efficent bulb.
balbo_luigi
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