ID.: 17-16-20-2979-10
13
3.2018
humidity may be higher. Devices, placed at higher altitudes above sea level may function
less efficiently due to lower air pressure.
3.3 Operation Principle
5
6
4
7
8
3
10
1
2
9
1. Compressor
6. Fan
2. Condenser
7. Magnetic valve
3. Dehydrator
8. Temperature bulb of the expansion valve
4. Thermoexpansion valve
9. Electric heater
5. Evaporator
10. Hot sanitary water tank (boiler)
The cooling system of the heat pump is a closed circuit system, within which the coolant R134a
circles as a heat exchanger
. At lower pressure and lower temperature (e.g. 10°C), the coolant is
vaporised in the heat pump vaporizer, thereby drawing heat from the air. Then, the coolant is
compressed to a higher pressure in the compressor, which makes its temperature rise to the
temperature, higher than that of the water in the boiler. The coolant then gives away the heat to
the water in the condenser, whereby it liquefies. The expansion of the coolant, which makes the
coolant pressure and temperature lower to the primary value, the circular process is concluded.
This process is repeated throughout the heat pump operation time.
Содержание WP4 LF-502
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