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  4. Air to Water Heat Pump for Radiant Floor
  • Air to Water Heat Pump for Radiant Floor

Air to Water Heat Pump for Radiant Floor

  • Product Item:Floor Heating Heat Pumps
  • Max. COP: 5.56
  • Max Water Temp: 40℃
  • Running Temp: -15℃~45℃
  • Function : Water Heating & Cooling
  • A+++  , DC Inverter  , High COP  , High Efficiency  , Multifunction  , WIFI Control
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    Description

    Spatial conditioning accounts for nearly 50% of the average residential household's energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are built more compactly, there is a growing need for strategies that are particularly well-suited for high-performance, low-load homes.

     

    An air-to-water heat pump system is an energy-efficient space conditioning solution designed to cost-effectively provide home comfort through efficient, safe and durable operation. This strategy works best in tightly insulated houses with high thermal mass (i.e. bare slab floors).

     

    Air-to-water heat pumps work the same as air-to-air heat pumps, but instead of connecting an outdoor unit to an indoor refrigerant-to-air heat exchanger coil like split air-to-air heat pumps, they use refrigerant-to-water heat exchanger and produce hot or cold water. Heating or cooling is distributed throughout the home by circulating hot or cold water through radiant floors, fan coils or radiators.

     

    The same heat pump can also be used to provide domestic hot water. Operating systems gain efficiency benefits during summer nights and winter days to reduce "thermal lift", reduce compressor cycling and improve distribution efficiency.

     

    Mixed-mode distribution strategies include hydraulic conveying using small fan coil units to provide moisture removal, and radiant distribution to provide sensible heat and cooling. Radiant systems provide occupants with a comfort advantage as the average radiant temperature and zoned delivery in the home is more uniform. The thermal storage provided by the slab allows for off-peak cooling and produces demand response benefits. Insulation at the perimeter of the floor and under the floor increases distribution efficiency.

     

    Air-to-water heat pump system in mixed mode distributed cooling mode. In cooling mode, the refrigerant-water heat exchanger acts as an evaporator. Chilled water is first circulated through a fan coil that provides potential cooling for the house and raises the temperature of the water supply to the radiant floor. The most significant cooling is then distributed through tubes embedded in the radiant panel floor.

     

    Lessons Learned

    • Proper humidity control is essential to ensure comfort and eliminate opportunities for condensation in all climates. In very dry climates, local ventilation is sufficient (i.e. bathroom and kitchen exhaust fans); otherwise a fan coil or dehumidifier is recommended. Radiant cooling is not recommended in humid climates.

     

    • AWHP can save up to 31% annual heating, ventilation and air conditioning energy compared to standard air-to-air heat pumps with tight ducts located in the attic, and up to 28% compared to ducts located in conditioned spaces.

     

    • Air conditioning pre-cooling can save up to 43% of seasonal cooling energy compared to a constant set point strategy. Even in hot and dry climates, the best strategy for changing the temperature and timing of the fallback may depend on location.

     

    • When delivering energy through radiant floors, power distribution system losses are reduced compared to ductwork. The average measured distribution efficiency was 94%, compared to 76% for ductwork with tight pipes installed in the attic.

     

    Looking to the future

    Further research focusing on the development of packaged air-to-water heat pumps as well as packaged controls for zoning systems is necessary. This will drive cost reductions, simplify installation procedures and ensure consistent levels of quality, thereby increasing installation market acceptance.

     

    As market penetration increases, system costs are expected to decrease.

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    Product Categories

    • Air Source Heat Pumps
      • Domestic Heat Pumps
      • Commercial Heat Pumps
      • Industrial Heat Pumps
    • Heat Pump Cylinders
    • Air to Water Heat Pumps
    • Swimming Pool Heat Pump
      • Residential Swimming Pool Heat Pump
      • Commercial Swimming Pool Heat Pump
      • Spa Heat Pump
    • Hot Water Heat Pumps
      • Domestic Hot Water Heat Pumps
      • Commercial Hot Water Heat Pumps
    • Underfloor Heating Heat Pumps
    • High Temperature Heat Pumps
    • Cold Climate Heat Pumps
      • Low Temperature Heat Pumps
      • EVI Heat Pumps
    • Geothermal Heat Pump
      • Ground Source Heat Pump
    • DC Inverter Heat Pumps
    • CO2 Heat Pumps

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    +86 15603721115

    tyler@lnashp.com

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