V-Tower and MPP

The latest landmarks of Prague’s Pankrác Plains are two buildings completed during 2019: Main Point Pankrác (MPP) and V-Tower.

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The MPP building was designed with the aspiration to obtain the LEED Platinum certificate. It is ventilated by air conditioning while maintaining the possibility of natural ventilation through the windows. There are three air-conditioning engine rooms in the building. The air-conditioning have suction and outlets solved through facade blinds and building ventilation ducts, so that only roof outlets from restaurants, toilets and garages are terminated on the roofs. The air from the offices is recycled to the garages.

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The rooms are cooled by induction units in the office parts and by fan-coil units in the rental part. Additional cooling technology and local server rooms are provided by smaller units with direct cooling. The heat source is a heat exchanger station connected to district heating networks. The office space is fitted with floor convectors, the other space with panel or fin radiators. During the construction, a heat pump was added to the heating system to extract heat from the wastewater of the neighboring V-Tower.

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The building management system includes 23 freely programmable stations, mostly Domat markMX, and more than 500 zone controllers (including 156 fan-coils and induction controllers and 356 radiators and cooling panel controllers). In visualization, this represents more than 6000 data points. The Merbon SCADA software was used as a visualization program.

Since the building was being completed and rented gradually, commissioning was possible with fewer technicians than is normally the case for such an event. However, this was not the case for assemblies – they were practically simultaneous throughout the building.

With its 104 meters, V-Tower has become the tallest apartment building in the Czech Republic. It has 130 apartments located in two towers (east and west, up to the 28th floor) and in the central part (up to the 15th floor). Primary technologies (heat and cold production, 44 air handling units for common space ventilation and integration of foreign equipment) are controlled by ten powerful markMX and mark320 process stations, with a total of nearly 3000 data points. Furthermore, there is one markMX controller in each apartment with about 120 data points, so only the apartments represent more than 15000 data points. The building management system also monitors the swimming pool technology located on the roof of the building in the penthouses.

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In the case of flats, emphasis was placed on noise insulation, so that due to the acoustics, ventilation units had to be regulated in the flats. Each unit has individually calculated and controlled inlet and outlet pressure parameters. Some of the flats were supplemented with steam humidifiers according to the owners’ wishes, while others were customized. This meant that the original concept of several type wiring disintegrated into an individual project and control software for each apartment.

Each apartment has water meters for hot and cold water, calorimeters for measuring heat and cold and another calorimeter for cooling consumption for air conditioning. Nearly 150 electricity meters are installed to measure electricity consumption in common areas and garages. In total, there are about 800 M-Bus meters in the V-Tower, connected to data concentrators, from which the values are brought into the visualization.

The V-Tower and MPP project has historically been one of Domat’s largest contracts. Despite the common problems of coordination, lack of time and constant changes in the technical solution, we managed to finish the event on time. This created a project that combines modern technology, comfort and energy efficiency.