EcoRenovator - Search Results

		EcoRenovator > Search Forums
Search Results

Advanced Search

Blog

60+ Home Energy Saving Tips

Recent Posts

Showing results 1 to 8 of 8
Search took 0.01 seconds. Search: Posts Made By: buffalobillpatrick

Forum: Geothermal & Heat Pumps

10-24-14, 02:57 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

The Shocking Truth About Heat Pumps...

The Shocking Truth About Heat Pumps (http://www.energyvanguard.com/blog-building-science-HERS-BPI/bid/69996/The-Shocking-Truth-About-Heat-Pumps)
...

Forum: Geothermal & Heat Pumps

10-21-14, 07:05 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

So Mike your suggesting that when Ice forms...

So Mike your suggesting that when Ice forms around the HX that the ESWT would go below 0*C?

It would, but I don't know how much, I mostly was restating what I've read in the hyp for Ice storage....

Forum: Geothermal & Heat Pumps

10-21-14, 06:27 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

Balance Point Formula from post #1 Kwh = .16...

Balance Point Formula from post #1

Kwh = .16
Mcf = 8.00
constant of 10.25 converts Mcf to Therm
Boiler Eff = .85
Kwh in a Therm = 29.3

BP = ( .16 / (( 8.00 / 10.25) * (1 / .85)) * 29.3);

Forum: Geothermal & Heat Pumps

10-21-14, 12:30 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

Thanks guys, I can buy a flat plate HX on Ebay...

Thanks guys,
I can buy a flat plate HX on Ebay 5"x12" 30 plate, 120Kbtu for $150
I already have a 5gal unopened propylene glycol made for heating systems.

I could sleep better doing the 30%...

Forum: Geothermal & Heat Pumps

10-20-14, 08:28 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

I could pipe the connection to the load tank in...

I could pipe the connection to the load tank in the house to pick up a little heat.
This would waste some heat but elemonate the glycol.

Forum: Geothermal & Heat Pumps

10-20-14, 08:14 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

Not sure, possibly below freezing in the Load...

Not sure, possibly below freezing in the Load 100' buried & insulated loop between HP in shop & house, if HP is not used for some days.

Another option to glycol would be to have a small pump...

Forum: Geothermal & Heat Pumps

10-20-14, 04:25 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

http://www.climatemaster.com/downloads/RP881.pdf ...

http://www.climatemaster.com/downloads/RP881.pdf
p19 graph for model TMW036 W/W

To get a COP of 5.2
Interpolating between lines
ELWT 70*F needs ESWT 30*F
ELWT 80*F needs ESWT 40*F
ELWT 90*F...

Forum: Geothermal & Heat Pumps

10-20-14, 02:28 PM

Replies: 15

HP COP vs NG boiler $ Balance point

Views: 10,031

Posted By buffalobillpatrick

HP COP vs NG boiler $ Balance point

I want my Heating System controller (Arduino) to be able to automatically switch between HP and NG boiler, based on $ calculations.

Code must calculate the HP COP vs. Natural Gas $ Balance Point....

Showing results 1 to 8 of 8

All times are GMT -5. The time now is 05:55 PM.