Application

Building

The Brewery has heavy one meter thick brick walls and the foundation pressure exceeded nominal bearing capacity of soil. The foundations were in a really bad condition and their reinforcement was necessary in order to avoid a demolition order. When the reinforcement of the foundations and load bearing structures was completed the energy saving measures could be applied.There were almost no changes in the proposed energy saving measures on the building construction. New windows with the glazing U-value of 1.1 W.m-2K-1 replaced the old ones. Some external walls were thermally insulated with 100 mm of mineral wool. The floors adjacent to the ground were insulated with 60 mm of polystyrene, and the ceilings under the unheated lofts with 160 mm of mineral wool. The roof of the two-storey building was insulated with 160 mm of mineral wool. Guest rooms were built in the attic increasing the floor area of the building from 2300 m2 to 2660 m2. (April 2008)

The building was commissioned. Furnishing of the building by the investor is still in progress. Due to the summer vacation the full operation will begin in September 2007. Monitoring phase began on April 1, 2007. Tuning of data acquisition is in progress. (June 2007)

Most of the interior finishes are complete. Furnishing is in progress.(March 2007)

The plasterboard walls of the guest rooms have been build in the attic. Internal walls are being plastered. Additional thermal insulation was applied to the ceilings of the highest floor. A scaffold has been build around the part of the building in order to apply thermal insulation and plaster the facades.(September 2006)

The reinforcement of the roof has been done (in order to hold a 14 kWp photovoltaic system). The wooden staircases were replaced with the reinforced concrete ones. New cement floors have been laid in the building. The vault ceilings in the oldest part of the building were reinforced with ferroconcrete. Some of the vaults were completely rebuilt.
(June 2006)

A new roof with dormers on the two-story part of the Brewery was built and the outlets for the ventilation systems in the roof ridge were prepared. Reinforcement of the building foundations and load bearing structures is in progress. (March 2006)

Plants

A hydronic heating system with different types of radiators and convectors is installed in the building. The wall mounted radiators are used in most of the rooms. Floor convectors placed in grill covered cavities are used in some rooms in order not to disturb the historical appearance of the rooms. Air handling units of the mechanical ventilation system are fitted with heating and cooling coils (water-to-air heat exchangers) and they can be used for heating and cooling. Since the building has a tremendous heat storage mass the mechanical ventilation systems can be employed for night cooling. A heating plant with two condensing gas boilers provides hot water for the heating system and air-handling units. A cooling plant with two chillers prepares chilled water for the cooling loop. A VRV air conditioning system is installed in the guest rooms. The VRV system can be used for both cooling and heating. The external units of the VRV system are located in the attic, so as not to disturb the visual aspect of the building. The units draw the outside air in through the openings in the facade and blow it out through the outlets (chimneys) on the roof. Both balanced mechanical ventilation with heat recovery and hybrid ventilation are used in the building. The mechanical ventilation systems are used in cafeterias, kitchens, clubs and multipurpose rooms where high air change rates are required. The hybrid ventilation system with the demand control based on air quality sensors is used in the guest rooms where the ventilation demand varies significantly over the time and from room to room. A grid connected PV system with the peak output of 13 kW is installed on the roof. The system consists of 132 monocrystalline modules. The main objective of incorporating the PV system into the energy retrofit measures was the reduction of the load to the power grid in summer months when mechanical cooling is needed. A good match between the output of the PV system and the cooling loads is expected due to the orientation of the system. (April 2008)

The main HVAC systems are operational. Tuning of the control of the hybrid ventilation system is in progress.(March 2007)

The ventilation ductwork was installed in the building. The main piping of the heating and cooling system was installed throughout the building. The installation of electrical wiring is in progress. The photovoltaic system is ready for installation (it will be mounted on the roof in early October).
(September 2006)

Ventilation ductwork and piping for cooling and heating system were installed in the attic. (June 2006)

Two condensing boilers were installed in the heating plant. The plant will only be used during the academic year. A heat pump will be used for domestic hot water heating during summer vacation. (December 2005)

BEMS

The Building Energy Management System (BEMS) is integrated into the Building Management System (BMS) of the whole campus of the Faculty of Information Technologies. It is possible, with this approach, to use information that is not directly linked to energy management for energy management purposes (e.g. information about occupancy from the access system can be used in control of heating and cooling). The BMS monitors number of parameters related to the performance of the building and building equipment. Since the BMS also incorporates security system, CCTV, fire alarm and other services it is possible to limit access of different users to certain information. (April 2008)

The sensors, actuators, and meters are in place. The commissioning of the building management system has started.(March 2007)

Installation of the wiring for the BEMS has been in progress. The control and monitoring centre located in one of the new built buildings in the campus is now operational. The fine-tuning of the system is in progress.
(September 2006)

Control and monitoring of all the systems in the campus will be done from the control center located in one of the building in the campus. Some systems will also be connected to the computer at the reception desk with 24-hour attendance (access system, security system, fire alert, CCTV, etc.). The control center is under construction. (December 2005)

Integration of hybrid ventilaiton system control into the central BEMS is underway. (September 2005)