9.3.- HEAT PUMPS

A heat pump is a thermal machine that exchanges energy in the form of heat from one space to another, from a cold source to a hotter one. Energy must be supplied for its operation since, due to the second law of thermodynamics, heat is spontaneously transferred from a hot source to a colder one.

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The cycle of a heat pump is:

  • Compression: the compressor transforms the electrical energy into heat and transfers it to a cooling fluid, raising its pressure and temperature.
  • Condensation: the refrigerant goes from gaseous state to liquid state in a condenser that gives heat to the hot source.
  • Expansion: the liquid expands, it is transformed into gas and cooled.
  • Evaporation: heat is absorbed from the cold source and it is transferred to the refrigerant.

From this basic scheme, modifications can be made to increase the cycle performance or adapt it to specific requirements.

For greater performance, it is important to obtain the highest possible temperature of the environment (air, water, soil, groundwater …), which is the source of energy. Nevertheless, variables such as the initial investment and the authorization cost must be taken into account.

Since the thermodynamic cycle is the same, a heat pump can operate to heat or cool the ambient air. The function of the evaporator and the condenser is changed by a reversing valve, two check valves and an additional expansion valve.

Different evaporator designs are used depending on the needs:

  • The direct evaporator, where the refrigerant takes the heat directly from the environment and the costs are reduced.
  • The brine evaporator, where a circuit with liquid transfers the heat from the heat source to the evaporator to cover distances. It is used when heat is extracted from the groundwater, soils or waters. Since a pump is used for the brine circuit, the costs are high.

Heat pumps are used in conditioning systems for homes, hotels, offices, etc., although they are also used in other areas, such as heating swimming pools or in laundries.

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HEAT PUMPS UNITS
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HEAT PUMP FOR DIFFERENT HEAT SOURCES AND HEAT EXCHANGERS - HPSE
  • HPSE
Available
9.3.- HEAT PUMPS
HPSE
Heat Pump for different Heat Sources and Heat Exchangers
The Heat Pump for different Heat Sources and Heat Exchangers, "HPSE", represents the typical compressor compression refrigeration plant. The compressor is of the scroll type, which is a positive displacement compressor.The evaporator and condenser...
UNDERFLOOR HEATING AND/OR HEAT SOURCE FOR HEAT PUMP - UHHS
  • UHHS
Available
9.3.- HEAT PUMPS
UHHS
Underfloor Heating and/or Heat Source for Heat Pump
The Underfloor Heating and/or Heat Source for Heat Pump, "UHHS", designed by EDIBON, allows the visualization of a piping system that simulates a radiant floor heating system and its functions as a heat sink. It can also be used as a heat source...
FAN HEATER AND/OR AIR HEAT EXCHANGER - FHAH
  • FHAH
Available
9.3.- HEAT PUMPS
FHAH
Fan Heater and/or Air Heat Exchanger
The unit Fan Heater and/or Air Heat Exchanger, "FHAH", designed by EDIBON, allows the visualization of a fan heater and its functions as a heat sink. It can also be used as a heat source working in conjunction with a heat pump.The main component...
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