Comments on: Geo Thermal Heat pumps. Theory and operation from Sibley.

By: oOoxelAoOo

oOoxelAoOo — Mon, 09 Nov 2009 15:42:59 +0000

Heat pumps are awesome, the reason they appear to be more than 100% efficient is because you get a bigger thermal energy difference than the electrical energy supplied to the compressor in the system. So technically you can’t calculate their efficiency, but you get a performance factor instead.
Annoyingly if you switched this around and tried to make a heat engine, it wouldn’t work

By: NightFlyyer

NightFlyyer — Mon, 09 Nov 2009 15:42:59 +0000

$1,100 including replacing one of the 3 pump motors. I just bought this house 3 years ago and it was supposed to be a working unit. I have had enough expenses fixing this place up, so replacing the whole thing did not seem like an option. If everything fails at once, I may do it.

By: daveschloemer

daveschloemer — Mon, 09 Nov 2009 15:42:59 +0000

I work for a company that puts about seventy geothermal units per year, mostly residential units. I must say, the guys did a good job but i would like to know what they charged to put that new heat exchanger in. I bet a new geothermal unit with ten year parts and labor warranty for around six grand after tax rebates and credits would sound better.

By: NightFlyyer

NightFlyyer — Mon, 09 Nov 2009 15:42:59 +0000

My backup heat doenst come on often. It was -27 degrees here last week and the Heat exchanger keeps the house cozy, but when you need to turn it up, the backup comes on in addition so they both run. Folks around here all have backup gas heaters. This was my first experience with the system, as I never had one in California, for sure. LOL

By: NightFlyyer

NightFlyyer — Mon, 09 Nov 2009 15:42:59 +0000

Folks around here in the Midwest, seem more interested in taking time and trying to save people a few bucks or at least maybe get us by a while longer, and I had just moved here from California, where I lived 50 years in Orange county and it is much different attitudes. They tried and failed, so I had to buy a heat exchanger which was close to $1000 plus labor. I dont think it is that funny. I thought it was thoughtful to try.

By: lfoldi

lfoldi — Mon, 09 Nov 2009 15:42:59 +0000

and why is your backup heat coming on? your temperature is constant in the ground…….dont matter if its -50 outside, this is the pupose of going underground. if your not getting enough heat exchange to heat your house all winter it is because you are not getting heat transfer from your freon to your secondary. or your secondary is not transfering the temperature back in the ground

By: lfoldi

lfoldi — Mon, 09 Nov 2009 15:42:59 +0000

They said they found a leak. They were just gonna solder it. All of a sudden they are changing the heat exchanger?
and you also said when they were gonna try to fix the leak that no other company would even attempt that? lol thats funny

By: willberg1

willberg1 — Mon, 09 Nov 2009 15:42:59 +0000

So the ground stays 55 degrees, your cold side warms up quickly..

By: willberg1

willberg1 — Mon, 09 Nov 2009 15:42:59 +0000

Dont think of the ground temp, think of the refrigerant. It has a COLD and HOT side just like your AC system in your car. Run your AC unit and touch the first radiator “Condenser” it gets hot very quickly which would be used to heat your home. You need to get rid of the cold side to make more hot, which gets stucked into the ground.

By: NightFlyyer

NightFlyyer — Mon, 09 Nov 2009 15:42:59 +0000

Im sorry your are upset that I didn’t go into theory. It’s very simply explained as a reversed a/c with a Thermal Heat exchanger.(see description) The vid is for use on their site, not to go into how things work. As far as Glen Frey goes, as long as Im not getting paid for using this video (I have no revenue sharing turned on) and since CMI has released this song’s use (according to YT guidelines), I can use it. The recommend me to “Do nothing” in the copyrighted music prompts on my video page.