• Login:
Welcome, Register Here
follow PropertyTalk on facebook follow PropertyTalk on twitter Newsletter follow PropertyTalk on LinkedIn follow PropertyTalk on facebook
Results 1 to 5 of 5
  1. #1

    Default how does heat pump work?

    does anybody know?

  2. #2
    Join Date
    Feb 2004


    Try this .....click the link http://lmgtfy.com/?q=how+does+a+heat+pump+work


  3. #3
    Join Date
    Oct 2003


    Just like a fridge.

  4. #4
    Join Date
    Oct 2008
    Auckland/Melbourne/ whereever the money is


    Heat pumps are like a big version of your fridge.
    They have 2 sides, a cold side that absorbs heat (like the inside of your fridge)
    & a hot side that gives off heat that has been absorbed from the cold side. (the back of your fridge)ie radiator

    both devices on each side can act in either way depending upon what direction the fluid inside the pipes are pumped.
    They are really just radiating surfaces, normally with lots of fins that give plenty of surface area to contact the surrounding air or water.
    At some point the pipes change size, from small to large, or large to small
    It is at that transition where heat is either absorbed or released

    so the cycle is as follows:
    Gas is compressed by a pump from a large pipe into a small pipe
    the compression gives off heat, which is usually blown into the desired area by a fan ie the head unit inside the house.
    the gas is transformed into a liquid when it is compressed.
    the liquid flows to the other device (the external radiator/absorber) at which point the pipe expands from small to large.
    when the liquid reaches this point the pressure is reduced (like water squirting out from a hose) and the liquid expands back to a gas. to do this it takes in heat - usually from the air.
    the gas is sucked back to the pump.

    the whole process can be reversed so a radiator becomes an absorber, ie aircon

    this principle is used whether either side interfaces with air or water.
    for most domestic heat pumps the transfer is from air to air
    but the aborber can be in the form of a solar panel, or from a pool of water
    and the radiator can be in the form of a fan heater, or water radiator

    hence we get devices such as standard domestic heatpumps, heatpump water cylinders, solar panel heatpumps, and if we used radiators like the UK & Europe we would have heatpump central heating systems.
    Last edited by Keithw; 07-04-2011 at 08:46 AM.

  5. #5
    Join Date
    Apr 2004


    You push the on/off button and you pays the electricity bill.
    Beats days of splitting and stacking wood!
    The three most harmful addictions are heroin, carbohydrates and a monthly salary - Fred Wilson.


Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Heat pump or fireplace?
    By Cass in forum Property Investment (NZ)
    Replies: 6
    Last Post: 12-02-2018, 10:31 PM
  2. Heat pump
    By Livie in forum Property Investment (NZ)
    Replies: 8
    Last Post: 10-08-2016, 09:30 AM
  3. Ducted/Multi-head Heat Pump
    By PC in forum Property Improvements (NZ)
    Replies: 14
    Last Post: 29-06-2015, 11:16 AM
  4. Heat pump removal
    By helenalex in forum Property Improvements (NZ)
    Replies: 7
    Last Post: 18-03-2014, 10:52 AM
  5. What Do Tenants Want Heat Pump or Woodburner
    By lissie in forum Tenant Stuff (NZ)
    Replies: 10
    Last Post: 16-02-2011, 05:32 PM
  6. Recommend Heat Pump Installer on the North Shore
    By rockran in forum Property Improvements (NZ)
    Replies: 0
    Last Post: 21-08-2008, 11:01 AM
  7. Depreciation rate for new (electric) heat pump
    By jksmurf in forum Finance, legal and tax (NZ)
    Replies: 13
    Last Post: 17-06-2008, 09:19 AM
  8. Air con/heat pump fitter wanted
    By Heg in forum Property Improvements (NZ)
    Replies: 0
    Last Post: 10-04-2008, 01:07 PM
  9. Heat pump installer in Wellington
    By moovet in forum Property Improvements (NZ)
    Replies: 3
    Last Post: 20-04-2007, 08:16 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts