EXECUTIVE
SUMMARY
The BPS Office
Building 15 is a new construction. The project consists of a single office
building rising above the ground level, two underground floors and a central
atrium space crossed by bridge connections, providing evacuation routes from
the inside of the building. The two underground floors of the building are
designed as parking space for the employees and the visitors, storage rooms,
technical and service premises. The ground floor provides two independent
entrances to the office floors, an office space in the northern part of the
floor, a cafe, a restaurant, two fast food restaurants with free access from
the outside.
Heating and
Cooling
Тhe heating of the building is provided by
the central district heating systems via local district heating substation
equipped with control and safety fittings. The hot water is distributed via
four pipe water distribution system to the building’s fan coil units. The cold
water for the air conditioning of the building is provided by four air cooled
chillers installed on the roof of the building. Each chiller is provided with
two buffer tanks and an expansion vessel.
Ventilation
of the office premises is established via four air handling units with rotary
regenerators, located on the roof. The four AHUs provide an outdoor airflow
volume of total 32 125 l/s. Each unit consists of two fan sections (supply and
exhaust), rotary wheel recuperation section and two F7 filter sections. The
ventilation of the ground floor premises is performed through recuperation
units for the Fast Food area and Lobby and AHUs for the Restaurant and Café. For
the garage exhaust ventilation and smoke extract ventilation via directing jet
fans and two main ventilators is established. The fans work in parallel and the
amount of the exhaust airflow is controlled by frequency inverters according to
the degree of air pollution. In case of emergency the main and jet ventilators
operate at maximum speed in order to provide 6-fold air exchange.
