I built a large garage a few years ago.
24' x 80' with 16 ft ceilings.
I plumbed pex into the concrete floor. 2 x 4 loop zones.
There is 2" of foam under and around the slab.
The walls are 3.5 inches of closed cell foam.
Ceiling is R40.
I am located about 70 miles north of Detroit.
Goals:
Keep the shop from freezing in the winter
Heat the shop to approx 65 degrees for a lot of the shoulder seasons, spring and fall. Understanding that this may vary depending on weather.
Minimize operating costs to do this. I am willing to spend a bit more upfront for this as I feel that all energy costs will continue to increase, within reason of course. This isn't an unlimited budget. Would definitely like to see a ROI of this over the years.
I do not have natural gas at home.
So heating options are propane, oil, electric, or solar.
It is not possible to tie PV solar panels to the grid here as I do not have 3 phase power.
My intention at the time I started the garage build was to use vacuum tube solar panels to heat the water for the floor.
Think bringitsolar.com type solar system with commercial panels.
There seem to be conflicting info on this type of system online anymore.
The stories of failed heat pipes or vacuum tubes, and maintenance required for them are making me rethink my options.
This combined with some stories online that these types of solar systems are becoming obsolete and that PV and heat pumps may be a better option have me wanting to get some thoughts from this group.
In my situation, what are your suggestions?
Is a hot water solar option still viable?
Tips for finding more robust vacuum tubes? Designing such a system for longevity?
I am trying to research the PV panel and heat pump options.
But, most of these seem to include grid tie feedback of the PV panels into the calculations.
If I cannot grid tie, is this still an option? Are there examples shown online? Recommended vendors?
Other suggestions?
24' x 80' with 16 ft ceilings.
I plumbed pex into the concrete floor. 2 x 4 loop zones.
There is 2" of foam under and around the slab.
The walls are 3.5 inches of closed cell foam.
Ceiling is R40.
I am located about 70 miles north of Detroit.
Goals:
Keep the shop from freezing in the winter
Heat the shop to approx 65 degrees for a lot of the shoulder seasons, spring and fall. Understanding that this may vary depending on weather.
Minimize operating costs to do this. I am willing to spend a bit more upfront for this as I feel that all energy costs will continue to increase, within reason of course. This isn't an unlimited budget. Would definitely like to see a ROI of this over the years.
I do not have natural gas at home.
So heating options are propane, oil, electric, or solar.
It is not possible to tie PV solar panels to the grid here as I do not have 3 phase power.
My intention at the time I started the garage build was to use vacuum tube solar panels to heat the water for the floor.
Think bringitsolar.com type solar system with commercial panels.
There seem to be conflicting info on this type of system online anymore.
The stories of failed heat pipes or vacuum tubes, and maintenance required for them are making me rethink my options.
This combined with some stories online that these types of solar systems are becoming obsolete and that PV and heat pumps may be a better option have me wanting to get some thoughts from this group.
In my situation, what are your suggestions?
Is a hot water solar option still viable?
Tips for finding more robust vacuum tubes? Designing such a system for longevity?
I am trying to research the PV panel and heat pump options.
But, most of these seem to include grid tie feedback of the PV panels into the calculations.
If I cannot grid tie, is this still an option? Are there examples shown online? Recommended vendors?
Other suggestions?
Comment