Minnesota Humidity and chilled water

Discussion in 'Maintenance and Troubleshooting' started by Timothy Pellizzer, Aug 2, 2015.

  1. heatoldhome

    heatoldhome Geo Student Forum Leader

    The greater difference in temperature between the ground loop and the load side water make the compressor work harder and use more electricity to move the btus across.
     
  2. docjenser

    docjenser Well-Known Member Industry Professional Forum Leader

    The ground loop temperature is pretty much stable during the peak of the heating season, usually in the low 30s. Thus the only variable is the Leaving Water temperature to the zone. Each 10F warmer decreases the efficiency by about 15%. Going from 90F to 120F will make the system more than 45% less efficient, for life. That's why feeding air handlers with water-water heat pumps is inherently inefficient, since they usually need 120F water.
     
  3. Mark Custis

    Mark Custis Not soon. Industry Professional Forum Leader

    It is nice to find out that air handlers need 120* water.
     
  4. docjenser

    docjenser Well-Known Member Industry Professional Forum Leader

    You did not know?
     

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