Itho Daalderop WPU 5G 25 c, Руководство пользователя

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2.2.2. Heat pump
The WPU heat pump is an electrically powered device, in
which liquid is pumped around in a closed circuit; this
liquid reaches boiling point and evaporates at a low
temperature and low pressure. This liquid is also referred
to as a refrigerant and is in liquid or gaseous state,
depending on the pressure and temperature. The
refrigerant's change from gas or liquid causes heat to be
absorbed or released.
The refrigerant circuit in the heat pump consists of a
compressor C1, an expansion valve EV1 and two heat
exchangers HX1 and HX2.
C1
EV1
HX1 HX2
The refrigerant circuit works as follows:
1.
The liquid refrigerant flows from the expansion valve
EV1 to the evaporator HX1. The evaporator is linked to
the source system. Due to the temperature
difference, the refrigerant absorbs the heat from the
heat source and evaporates.
2. The compressor C1 draws in the gas and compresses
it under high pressure, causing the temperature of
the gas to rise further.
3. The gas then enters the HX2 condensor. The
condensor is linked to the storage tank and the
central heating system of the home. Due to the
temperature difference, the heat of the gaseous
refrigerant will be released to the central heating
water or the tap water. In doing so, the gas will cool
down and condensate.
4. The liquid refrigerant cools down even further until
the expansion valve reduces the pressure.
5. After this, the process can start again.
2.2.3. Central heating system
An efficient use of the WPU heat pump requires the use of
supply systems, such as:
●
Wall, floor or ceiling heating (pipes incorporated in
wall, floor or ceiling)
●
LT-radiators (oversized radiators)
●
LV-convectors (larger than standard convectors)
The benefit of wall, floor and ceiling heating is that the
surface is usually much greater than that of a regular
radiator. A relatively low temperature is therefore enough
to transfer sufficient heat to the environment.
In addition to improved efficiency, these low temperature
systems ensure an even heat distribution and create
more comfort.
LT-radiators and LT-convectors are supply systems that
can still emit sufficient heat at a relatively low water
temperature. They have an extra large surface area (often
due to additional slats or connections) or are equipped
with a ventilator, which enhances the convection effect.
When choosing the supply system, make sure that it is
also suitable for the cooling of the home.
2.2.4. Tap water system
Besides heating and cooling the home, the heat pump
also provides hot domestic water. A traditional gas boiler
can quickly supply an unlimited amount of water at high
temperature, but a heat pump cannot. In order to
guarantee a constant temperature, a storage vessel is
required. The heat pump slowly heats up the water in the
storage vessel.
The WPV storage vessels of Itho Daalderop were
especially designed fro the WPU heat pump, whereby the
power and temperature are harmonised.
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