Lake Seminole Topics: Natural Gas Heating rather than Heat Pump
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Name:   Summer Place The author of this post is registered as a member - Email Member
Subject:   Natural Gas Heating rather than Heat Pump
Date:   7/13/2010 3:47:07 PM

WHY IS A GEOTHERMAL HEAT PUMP BETTER?
Water stores tremendous quantities of heat. In nature, few substances have a higher specific heat (one BTU per pound) than does water, making it an ideal heat storage medium for both natural and man-made phenomena.

Air, on the other hand has a very low specific heat (.018 BTU per cubic foot). There is 3472 times more heat stored in a cubic foot of water (62.5 BTU per degree F) as in a cubic foot of air . In other words it would be necessary to move 3472 cubic feet of air through a heat exchanger in an air-to-air heat pump in order to expose that heat exchanger to the same quantity of heat stored in a cubic foot of water (7 1/2 gallons) that is moved thru a geothermal heat pump.

small_cu.gif

This cube represents one cubic foot of water

h2o_cube.gif

This cube represents 3472 cubic feet of air

Furthermore, Enviroteq geothermal heat pump units have such low resistance to water flow (pressure drop) that about two cubic feet per minute (15 gallons) is the average water flow through an Enviroteq geothermal heat pump utilizing only about 235 watts of energy compared to well over 1000 watts to move nearly 7000 cfm of air through the air-source heat pump.

While these differences are significant, there is more: the heat transfer characteristics of water make it superior to air. Conduction is more rapid, more complete, and more efficient a heat transfer phenomenon than convection. A ground-water heat pump extracting heat from water at freezing is approximately equal in performance to that of an air-source heat pump extracting heat from 60 degree air.

Other messages in this thread:View Entire Thread
Natural Gas Heating rather than Heat Pump - Mike75 - 7/12/2010 3:55:08 PM
     Natural Gas Heating rather than Heat Pump - Ulysses E. McGill - 7/12/2010 4:27:42 PM
          Natural Gas Heating rather than Heat Pump - Talullahhound - 7/12/2010 4:45:45 PM
               Only Negative - roswellric - 7/12/2010 7:01:05 PM
                    [Message deleted by author] - Ulysses E. McGill - 7/12/2010 8:00:01 PM
                         Turning down Winter temps - roswellric - 7/12/2010 10:11:17 PM
          Natural Gas Heating rather than Heat Pump - Mike75 - 7/12/2010 7:28:38 PM
               Natural Gas Heating rather than Heat Pump - Ulysses E. McGill - 7/12/2010 7:39:35 PM
               Natural Gas Heating rather than Heat Pump - Mack - 7/12/2010 7:42:38 PM
                    Bigger ain't necessarily better.... - roswellric - 7/12/2010 10:19:30 PM
                         Bigger ain't necessarily better.... - Ulysses E. McGill - 7/13/2010 7:34:30 AM
                              Bigger ain't necessarily better.... - roswellric - 7/13/2010 11:25:32 AM
                                   Bigger ain't necessarily better.... - Ulysses E. McGill - 7/13/2010 11:58:04 AM
     Natural Gas Heating rather than Heat Pump - muddauber - 7/12/2010 9:46:12 PM
          Natural Gas Heating rather than Heat Pump - Pontoonfisher - 7/13/2010 7:38:19 AM
               Natural Gas Heating rather than Heat Pump - Ulysses E. McGill - 7/13/2010 7:55:00 AM
               Natural Gas Heating rather than Heat Pump - Ulysses E. McGill - 7/13/2010 8:14:07 AM
     Geothermal systems - Osms - 7/13/2010 9:00:53 AM
          Geothermal systems - roswellric - 7/13/2010 12:00:10 PM
     Natural Gas Heating rather than Heat Pump - Summer Place - 7/13/2010 10:20:33 AM
          Natural Gas Heating rather than Heat Pump - Summer Place - 7/13/2010 10:37:14 AM
          Natural Gas Heating rather than Heat Pump - Ulysses E. McGill - 7/13/2010 10:45:18 AM
          Natural Gas Heating rather than Heat Pump - lakngulf - 7/13/2010 12:14:43 PM
               Natural Gas Heating rather than Heat Pump - pcs1900 - 7/13/2010 1:25:28 PM
                    Natural Gas Heating rather than Heat Pump - Kizma Anuice - 7/13/2010 2:21:39 PM
                         Natural Gas Heating rather than Heat Pump - Summer Place - 7/13/2010 3:40:47 PM
                              Natural Gas Heating rather than Heat Pump - Summer Place - 7/13/2010 3:47:07 PM
                                   Basic Questions on a Geothermal system?? - Mack - 7/13/2010 5:20:55 PM
                                        Basic Questions on a Geothermal system?? - Kizma Anuice - 7/13/2010 5:57:01 PM
                                        Basic Questions on a Geothermal system?? - BamaDave - 7/13/2010 11:25:33 PM
                         Natural Gas Heating rather than Heat Pump - pcs1900 - 7/14/2010 9:54:00 AM
               Natural Gas Heating rather than Heat Pump - Mack - 7/14/2010 4:35:25 PM
                    Natural Gas Heating rather than Heat Pump - BamaDave - 7/14/2010 5:49:07 PM
                         Natural Gas Heating rather than Heat Pump - Osms - 7/14/2010 6:09:21 PM
                              Natural Gas Heating rather than Heat Pump - Summer Place - 7/14/2010 6:14:50 PM
     Hey Mike - green,ed - 7/14/2010 10:45:30 PM



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