Doug Horgan
  • Mc Lean, VA
  • United States
Share on Facebook Share on Facebook Share
  • Featured Blogs
  • Discussions (6)
  • Events
  • Groups
  • Photos
  • Photo Albums
  • Videos

Doug Horgan's Discussions

Geothermal real-world performance

Started this discussion. Last reply by Terry D. Davenport Apr 18, 2013. 32 Replies

I've heard that measured performance of actual, installed geoexchange systems can be much lower than advertized COP numbers.Is anyone aware of any accessible, reliable reports about real-world…Continue

Tags: geothermal

 

Doug Horgan's Page

Latest Activity

Terry D. Davenport replied to Doug Horgan's discussion Geothermal real-world performance
"Hi Richard. Radiant engineering in Bozeman MT designed the closed loop glycol system using Caleffi colectors and a crown 120 gal stainless water storage tank.   The house is 1400 ft2.  r 70 walls and roof.  R 40 slab…"
Apr 18, 2013
Doug Horgan replied to Doug Horgan's discussion Geothermal real-world performance
"Just wanted to check in and thank all the great responders. I particularly appreciate those who took the time to post links to studies. Overall it would seem there are not many studies, and they don't include many houses--but the studies that…"
Apr 18, 2013
Richard Scott Mills replied to Doug Horgan's discussion Geothermal real-world performance
"What is the name of the system? Any info on the home?"
Apr 18, 2013
Terry D. Davenport replied to Doug Horgan's discussion Geothermal real-world performance
"Hi Leonard.  May I recomend a solar thermal combi system.  It heats the domestic hot water and uses the excess heat stored in that water to heat the home at night time.  I have one system on a heavily insulated home (R 70 walls/ roof,…"
Apr 18, 2013
Richard Scott Mills replied to Doug Horgan's discussion Geothermal real-world performance
"Best practice put your investment into sealing and insulation. One time cost that can bring your heating/cooling down by 90% with proper orientation. Mini split for heat/cool and ERV/HRV for IAQ. Simple cost effective without having to go into…"
Apr 18, 2013
R Higgins replied to Doug Horgan's discussion Geothermal real-world performance
"I'll share what I've found struggling to get a geo system to justify a geo system at my place: 1.  You need the right distribution system in place already, low temp hydronic or high volume low pressure well insulated ducted air…"
Apr 12, 2013
Curt Kinder replied to Doug Horgan's discussion Geothermal real-world performance
"Could be...could be not. In expensive electric markets such as the northeast, NG is likely a slam dunk for those who have it. OTOH in cheap electricity markets, $0.08 or less, even if NG is available, Geo has a place at the table if for no other…"
Apr 5, 2013
Bob Blanchette replied to Doug Horgan's discussion Geothermal real-world performance
"Geo systems may be more efficient than NG, but they don't cost less to run since NG is such a low cost fuel source."
Apr 5, 2013
Bob Blanchette replied to Doug Horgan's discussion Geothermal real-world performance
"Once NG goes to global pricing electric power rates will increase also. Keep in mind what most of the new power plants use for fuel..."
Apr 5, 2013
Joe Romero replied to Doug Horgan's discussion Geothermal real-world performance
"Though none of my relatives or friend have installed this system but when I Googled the topic I found that GeoExchange is the most energy-efficient, environmentally clean, and cost-effective space conditioning system available as per the…"
Apr 5, 2013
Bob Pietrangelo replied to Doug Horgan's discussion Geothermal real-world performance
"I agree with NG's current prices, but do you REALLY think NG is going to stay cheap once it's able to be exported, or regulation and Taxes are applied as they are with oil? The US has the infrastructure to import LNG, but not to export it.…"
Apr 5, 2013
Bob Blanchette replied to Doug Horgan's discussion Geothermal real-world performance
"Thermal inertia is NOT considered in Manual J calculations!! Equiptment can be sized a bit smaller once inertia is considered, just don't expect quick recovery times."
Apr 4, 2013
Bob Blanchette replied to Doug Horgan's discussion Geothermal real-world performance
"My bad, I wasn't considering the deep south."
Apr 4, 2013
Bob Blanchette replied to Doug Horgan's discussion Geothermal real-world performance
"With NG at current prices, no way Geo will ever have a reasonable payback time. Geo's real market is all electric homes, or those on oil/propane."
Apr 4, 2013
Bob Pietrangelo replied to Doug Horgan's discussion Geothermal real-world performance
"Strip heat will be a requirement mostly north of NC. The amount it requires is a fraction of an air source unit. The amount of EH is so small it could cost $10 or less per year, the max I've seen is about $100/yr. Geo outperforms every other…"
Apr 4, 2013
tedkidd replied to Doug Horgan's discussion Geothermal real-world performance
"Following Curt's comment - a house this well insulated and air tight, & possibly with thermal mass, may not really experience the "peak" load you think about with a leaky house in Upstate NY (or anywhere else)...  Mass, and…"
Apr 4, 2013

Profile Information

Company
BOWA
Professional Certification
BPI, LEED AP+ Homes, CGP, CGR, GCP
Professional Interests
Remodeling, energy upgrades, solar
Website URL
http://www.bowa.com

Comment Wall

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

  • No comments yet!
 
 
 

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Judy Rachel replied to Dean Kirkland 's discussion Im looking for a blower door / duct blaster / manometer rental in So Cal
"You can borrow the equipment from the Tool Lending Library maintained by SoCalEdison.  This is…"
3 hours ago
Profile IconSteve Last, Paul J Anzalone Jr, Jon Traudt and 1 more joined Home Energy Pros
17 hours ago
Jamie Medlin replied to angela stanzione's discussion Used Weatherization and auditing equipment for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Please let me know if the flowhood  still for sale. jmedlin@archonenergysolutions.com"
yesterday
Jamie Medlin joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
yesterday
Laurie DiDonato posted an event
Thumbnail

HERS Rater Training Discount: Register by 1/6/17 and Get $100 Off! at Energize CT Center, North Haven, CT

January 23, 2017 to February 3, 2017
Become a HERS Rater with the NEHERS Alliance!Online Component: January 23rd-February 3rd, 2017 -…See More
yesterday
angela stanzione replied to angela stanzione's discussion Used Weatherization and auditing equipment for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Yes, I do. Pictures are above. I have a newer fan, I have a frame in a case and I have panels."
yesterday
Tom Phillips replied to Bruce Ceniceros's discussion How effective are whole house air cleaners?
"re: costs:  I suspect the added UV & PCO & ESP has a big price tag but no clear…"
Thursday
David Baerg replied to angela stanzione's discussion Used Weatherization and auditing equipment for sale in the group Energy Auditing Equipment for Sale, Trade or to Purchase
"Hi Angela, Do you have any fans left?  Frames?  Panels? Thanks, Dave"
Thursday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service