05-08-2018, 07:37 AM
|
#21 (permalink)
|
|
Master EcoModder
Join Date: May 2011
Location: Syracuse, NY USA
Posts: 2,935
Thanks: 326
Thanked 1,315 Times in 968 Posts
|
16% capacity factor already is amazing considering the poor weather we have been having.
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
05-08-2018, 01:48 PM
|
#22 (permalink)
|
|
Master EcoModder
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,908
Thanks: 3,475
Thanked 2,952 Times in 1,845 Posts
|
Right - an average of 38.3kWh / day is okay, but not great. We have hit as much as 68kWh in one day.
The estimated annual total for our system was just shy of 13MWh. If we stay at the 38.3kWh / day average, that is almost 14MWh for the year.
|
|
|
|
|
05-08-2018, 02:58 PM
|
#23 (permalink)
|
|
Human Environmentalist
Join Date: Aug 2010
Location: Oregon
Posts: 12,829
Thanks: 4,329
Thanked 4,485 Times in 3,448 Posts
|
Lovely looking house and location Neil.
Did you build the roof pitch to optimize power generation, or to shed snow?
|
|
|
|
|
05-08-2018, 03:13 PM
|
#24 (permalink)
|
|
Master EcoModder
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,908
Thanks: 3,475
Thanked 2,952 Times in 1,845 Posts
|
Quote:
Originally Posted by redpoint5
Lovely looking house and location Neil.
Did you build the roof pitch to optimize power generation, or to shed snow?
|
I built the 12 pitch roof to get the most roof space I could reasonably get. It happens to be ideal for winter production, and yes snow shedding off is also important for winter production. My brother's system is on a 5 pitch, and that works better in the summer, but he has to clear snow with a long handled snow rake. Which is non-trivial work. |
|
|
|
|
The Following User Says Thank You to NeilBlanchard For This Useful Post:
|
|
|
05-08-2018, 03:20 PM
|
#25 (permalink)
|
|
Human Environmentalist
Join Date: Aug 2010
Location: Oregon
Posts: 12,829
Thanks: 4,329
Thanked 4,485 Times in 3,448 Posts
|
Quote:
Originally Posted by NeilBlanchard
I built the 12 pitch roof to get the most roof space I could reasonably get.
|
Can you share a "before" photo? Just curious to visualize what you described. |
|
|
|
|
05-08-2018, 03:40 PM
|
#26 (permalink)
|
|
Rat Racer
Join Date: May 2011
Location: Route 16
Posts: 4,150
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
|
Wait, no solar hot water?
__________________
Quote:
Originally Posted by sheepdog44
Transmission type Efficiency
Manual neutral engine off.100% @∞MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%
|
|
|
|
|
|
The Following User Says Thank You to Fat Charlie For This Useful Post:
|
|
|
05-08-2018, 04:38 PM
|
#27 (permalink)
|
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,268
Thanks: 273
Thanked 3,572 Times in 2,836 Posts
|
Probably better off installing more PV and running a hot water heat pump.
Depending on your homes lay out and where you live, some where cold like MA installing solar hot water can be a real pain because you have to run glycol and run these lines where you don't normally run water lines. That means you could be tearing out walls through 1 or 2 floors in a typical new England style home if your water heater is in the basement.
Actually I would only go through the trouble of thermal solar if I was going off grid and wanted to futlrther reduce my propane bill.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
|
|
The Following User Says Thank You to oil pan 4 For This Useful Post:
|
|
|
05-09-2018, 09:29 AM
|
#28 (permalink)
|
|
Master EcoModder
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,908
Thanks: 3,475
Thanked 2,952 Times in 1,845 Posts
|
I have a heat pump water heater.
|
|
|
|
|
05-09-2018, 09:33 AM
|
#29 (permalink)
|
|
Rat Racer
Join Date: May 2011
Location: Route 16
Posts: 4,150
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
|
I was thinking more along the lines of Gary's $1000 solar water heater. The plumbing isn't extensive, but you do need space in the basement.
It beats turning the sun's heat energy into electricity, storing that, and then turning it back into heat again.
__________________
Quote:
Originally Posted by sheepdog44
Transmission type Efficiency
Manual neutral engine off.100% @∞MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%
|
|
|
|
|
|
05-09-2018, 09:44 AM
|
#30 (permalink)
|
|
Master EcoModder
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,908
Thanks: 3,475
Thanked 2,952 Times in 1,845 Posts
|
I will upload pictures of the old 8 pitch hip roof when I have access to them.
Solar heat collectors with vacuum tubes are pretty good. Maybe someday.
Last edited by NeilBlanchard; 05-09-2018 at 09:49 AM..
|
|
|
|
|
