EcoRenovator - View Single Post - P-p-p-ower shed: part two

creeky · 09-20-12, 07:29 PM

this brings up a few questions for me

1-I recently struggled with the propane vs solar powered fridge question. I finally realized, that at today's prices, it is far more economical to expand your solar system a small amount and buy a regular fridge. You save about a thousand bucks over a propane fridge and then you save 600+ bucks a year in propane cost.
So now you tease me with your A7. .6 kw for a shower. How long was that shower???

1a) given that the best propane on-demand water heater is 500 and you can get a cheaper one for 120 and on-demand water heaters appear to be pretty frugal with gas.
How much was that A7 again?
2)Your TS-45. How do you change the panel 60-70v to 48.x (the charging current level) with a pwm controller without throwing power away?

09-20-12, 07:29 PM	#7
creeky Journeyman EcoRenovator Join Date: Jun 2011 Location: a field somewhere Posts: 304 Thanks: 64 Thanked 44 Times in 31 Posts	this brings up a few questions for me 1-I recently struggled with the propane vs solar powered fridge question. I finally realized, that at today's prices, it is far more economical to expand your solar system a small amount and buy a regular fridge. You save about a thousand bucks over a propane fridge and then you save 600+ bucks a year in propane cost. So now you tease me with your A7. .6 kw for a shower. How long was that shower??? 1a) given that the best propane on-demand water heater is 500 and you can get a cheaper one for 120 and on-demand water heaters appear to be pretty frugal with gas. How much was that A7 again? 2)Your TS-45. How do you change the panel 60-70v to 48.x (the charging current level) with a pwm controller without throwing power away?