Social care home Tmavý Důl, also known as the mine shaft “Zdeněk Nejedlý II” in the cadastre of Rtyně v Podkrkonoší (behind the village Odolov, towards Adršpach). In 1989, the coal shaft was closed and a drinking water pumping station for a retirement home was established there.
|invertor DYNAMIC 8 kW
HP3AWX 16 D Splitbox
separated capacitor SPLITBOX
|accumulation vessel 500 l
3× accumulation tank for TeV
1× backup electric boiler 72 kW
6× circulation pump
3× three-way valve including actuator
|heating and hot water
|Place of realization
u Rtyně v Podkrkonoší
|Year of installation
|Theoretical annual heat consumption
|2 165 GJ/year
|Theoretical electricity consumption
The total capacity of the facility is 156 beds, of which 72 beds are for the home for the elderly and 84 beds for Ward I. The new Ward I (costing approximately CZK 170 million) has 84 new social beds, with individual rooms having their own sanitary facilities. The size, scope and use of innovative elements in social services make the new ward absolutely exceptional.
The Hradec Králové Region (the investor of the new building) decided to tackle the project comprehensively and reduce heating costs by installing PZP HEATING heat pumps, but also by making structural modifications that will reduce the overall energy consumption in the future.
HEAT AND ENERGY DEMAND
Heat source: air-to-water heat pump inverter type
HOT WATER SYSTEM
DOMESTIC HOT WATER HEATING
ZThe heat source for the building is the HP3AWX16D SPLITBOX air-to-water heat pump system (outdoor and indoor unit). Navržená kaskáda tepelných čerpadel je sestavena ze šesti venkovních jednotek, které jsou umístěny na jižní straně budovy u štítu. The indoor units (heat exchangers) are installed on the perimeter wall in the technical room, which is located on the 1st floor at the south gable.
At a calculated outdoor temperature of -18 °C and a heating water temperature of +55 °C, the output of one unit is 16 kW.
The air-to-water inverter heat pump with infinitely variable power modulation ideally follows the needs of the building and thus optimises heating and hot water costs as much as possible. It achieves high efficiency not only by controlling the compressor output, but also by adjusting the speed of the fan and circulator.
Very quiet operation (sound pressure level at 3 m from the outdoor unit 35.2 dB) is achieved by specially designed blades, the use of an ultra-quiet fan and a perfectly acoustically insulated compressor section. Setting the heat pump and heating system parameters is easy and intuitive via the touch screen. Operating conditions and values, such as the heating factor (COP at A7/W35 is 5.05), are clearly displayed on the seven-inch colour display. An electrical switchboard is included to provide power switching for the backup heat source, circulators and individual control elements. Heat pump DYNAMIC according to the new ErP directive (effective from 2019) belongs to the A+++ energy class.
Outdoor unit – heat pump HP3AWX 16 DSP
Designed an air-to-water heat pump with high energy efficiency, quiet operation and the possibility of setting lower fan speeds. Operation with compressor, fan and circulator power modulation, with intelligent control system. The outdoor unit is mounted on a concrete base with drainage layer.
Indoor unit – separate capacitor Splitbox
The separate Splitbox condenser consists of a plate heat exchanger (heat pump condenser) and is provided with thermal insulation. The condenser is connected to the refrigerant and secondary circuit of the heat pump. The unit is wall-mounted. The connection to the outdoor unit is via a copper pipe for refrigeration.
A heating water storage tank with a volume of 500 l (connected from the condensers of the indoor units) has been designed.
Preparation of hot water
The hot water is prepared in three indirect storage heaters with a capacity of 1000 l. TeV heating is preferred to heating.
A wall-mounted electric boiler with an output of 72 kW, connected to the hot-water heating system, is designed as a bivalent heat source.
Are you interested in this realization?
If you are interested in any of our products or services, please do not hesitate to contact us.