Gebwell GEMINI 40, Инструкция по установке, эксплуатации и обслуживанию

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8 Gebwell GEMINI
3 HEAT PUMP OPERATING
INSTRUCTIONS
3.1 General
Gebwell GEMINI is a perfect heat pump, which saves energy
and offers efficient technical possibilities. A well-designed and
appropriately dimensioned ground source heating system is af-
fordable in terms of operating expenses and energy efficient.
With a heat pump, you can efficiently heat both interior air and
domestic hot water. In summer, the system can also be used to
cool interior air in an environmentally friendly fashion.
3.2 Ground source heat energy
A heat pump collects heat from the ground and transfers it inside
the building. The heat can be collected using pipes sunk in a
bored well, heat collection pipes installed near the ground sur-
face or pipes anchored at the bottom of a water system.
Bored well as a heat source
Ground as a heat source
Water system as a heat source
More information on heat collection systems and their scaling
can be found on the website of Gebwell Ltd. and the Finnish
Heat Pump Association.
www.gebwell.com
www.sulpu.fi
3.3 Ground source cooling
The cold temperature of the brine can also be used to cool dwell-
ings. In summer, the free cooling energy can be transferred from
the ground with just a circulation pump. The heat pump system
can be connected to the convection heaters of the ventilation sys-
tem or an underfloor heating/cooling system for cooling pur-
poses.
3.4 Heat pump’s operating principle
The heat pump’s refrigerant circuit includes four main compo-
nents:

Evaporator

Compressor

Condenser

Expansion valve
The heat in the ground is absorbed into a liquid solution circu-
lating in the heat collection pipes.
In the evaporator, the liquid comes into contact with the refrig-
erant that, when vaporised, binds heat energy from the liquid so-
lution that circulates in the ground. The liquid solution returns to
the ground about 4°C cooler than when coming out to the sur-
face. The lowest permissible temperature for the liquid solution
coming to the heat pump is -5°C.
The compressor increases the pressure and temperature of the
refrigerant. The refrigerant also absorbs the heat energy gener-
ated by the compressor’s operation.