Selected investments:

- Profeed in Trzeciewiec,
- Supravis Group in Bydgoszcz,
- Polimer in Solec Kujawski.

Selected investments:

- Fordon Mall in Bydgoszcz,
- Alfa Shopping Centre in Olsztyn,
- Alfa Shopping Centre in Grudziądz,
- Arpol Shopping Centre in Toruń.

Selected investments:

- Railway Station and Shopping Mall in Myślenice,
- Railway Station in Iława.

Selected investments:

- 10th Military Clinical Hospital with Clinic in Bydgoszcz,
- Pod Tężniami Nursing Home in Ciechocinek,
- Villa Park Nursing Home in Ciechocinek.

Selected investments:

- Education Centre of Physical Culture and Sports in Bydgoszcz,
- Orka Water Park in Bolesławiec,
- MK Bowling in Włocławek,
- Gymnasion Fitness in Włocławek,
- Kazimierz Wielki University Swimming-pool in Bydgoszcz,
- Naquarius Swimming-pool in Nakło,
- Moczydło Sport Complex (Aqua Relaks) in Warsaw,
- Wilanów Swimming-pool in Warsaw,
- Swimming-pool in Osielsko,
- Kościan Swimming-pool,
- Mońki Swimming-pool,
- PERŁA Swimming-pool in Bydgoszcz,
- Water Park in Solec Kujawski.

Selected investments:

- Focus Park Bydgoszcz - Pizza Hut, KFC,
- Bohema Hotel in Bydgoszcz,
- Weranda Restaurant in Bydgoszcz,
- Autos Hotel in Solec Kujawski,
- Samotnia nad Wdą Resident Hotel in Tleń,
- Auchan Shopping Centre in Bydgoszcz,
- Rzym Tavern in Pawłówek,
- MCAW Gerczak in Jażdżówki,
- Sowa Restaurant in Bydgoszcz.

Selected investments:

- Romantic Palace in Turzno.

Selected investments:

- Kujawy Meat Processing Plant (Drobex) in Bydgoszcz,
- National Sugar Company Inc. „Sugar Plant” in Nakło,
- Dakri Bis in Łódź,
- Olewnik Meat Processing Plant,
- Frito Lay in Tomaszów Mazowiecki.

Selected investments:

- ICT Poland Kostrzyn,
- Akomex Packaging Producer in Starogard Gdański,
- Mondi Plants Pulp and Paper in Świecie,
- Intropak Celestynów,
- Agi Media Warsaw,
- Grafpol Printing House in Bydgoszcz,
- Express Media Printing House in Bydgoszcz,
- Abedik Printing House in Bydgoszcz.

Selected investments:

- Voivodeship Training Centre for Drivers in Grudziądz,
- Family Park in Bydgoszcz,
- Radio Transmitting Centre in Solec Kujawski,
- Jabil Global Services Poland in Bydgoszcz,
- Corimp Bydgoszcz,
- Ursynów City Hall in Warsaw,
- GM Records in Warsaw,
- Arpol Motor Company Showroom in Toruń,
- Opel Showroom in Bydgoszcz,
- Mercedes Showroom in Szczecin.

HVAC Systems in the Jubilee House of the ’WIATRAK’ Foundation

Design solutions adopted in HVAC installations.

Design works carried out by KLIMAT SOLEC Ltd have resulted in the creation of designs of HVAC installations, installation of heat pumps with ground probes (as the lower heat source) and gas boiler room with condensation boilers. High expectations of the customer have forced the application of many advanced solutions.

Ventilation of rooms

The majority of rooms will be equipped with mechanic supply – exhaust ventilation systems. Eight such systems have been designed with total air capacity of 44,785 m3/h. The majority of them have been equipped with modular ventilating units with highly efficient modules of heat recovery in the form of rotating exchangers and energy-saving fans with direct drives of the Plug-fan type. All ventilators will be equipped with an inverter allowing the adjustment of the ventilation unit’s output to meet the current demands for ventilation air. Two large rooms: an auditorium and an art coffee-shop will be equipped with ventilation systems not only ensuring adequate ventilation but also maintaining correct temperature all year long. That is why the ventilation units servicing these rooms have been equipped with additional mixing chambers. This solution allows for rapid heating or cooling of air to the required temperature with the use of recirculated air. Moreover, in the case of the auditorium, where due to the considerable height of the room, constant air currents introduced through ceiling diffusers are necessary, a change in the quantity of fresh air will be possible depending on the current demand (controlling the quantity of fresh air with the use of air quality sensors – CO2).

The system of ventilation ducts manufactured by KLIMAT SOLEC is made out of galvanized steel sheets. KAH-I+PV and KAH+PV ventilation grills and ceiling swirl diffusers of the NSW type – manufactured by KLIMAT SOLEC, have been installed in the majority of rooms. KOK compensation hoods produced by the KLIMAT SOLEC, which provide for the supply and exhaust of air, also have been installed. In the auditorium, due to the considerable height of the room and the fact that ventilation has to ensure heating and cooling of the room, special ceiling swirl diffusers equipped with thermostatic servo-motors have been installed. They ensure adequate angle of air supply depending on the mode of operation: heating or cooling.

Due to the variable number of users, VAV air flow regulators have been installed in selected rooms. In rooms with an expected large number of users, the control of the operation of VAV regulators will be carried with the use of air quality sensors to guarantee a smooth transition (CO2). In the case of remaining rooms equipped with air flow regulators, two methods of control will be used: nominal output/minimum output (stand-by). The activation of a particular mode will be effected by the BMS system. Due to the variable operation of the individual VAV regulators, the smooth adjustment of ventilator output to current demands, as part of ventilation units’ automatics, will be enabled through a system of pressure sensors and inverters.

Air-conditioning of rooms

The air-conditioning has been based on three systems: ice water being the product of the lower heat source of the heat pumps, freon coolers working together with condensation units and VRF and Split air-conditioning systems.

The ice-water, coming from the lower heat source of the heat pumps, will feed water radiators of the ventilation units. A 33% solution of propylene glycol will be the system’s cooling agent. The temperature parameters of this agent will change depending on the current and seasonal efficiency of the heat pumps and the total cooling demand. For this reason, the radiators will be used mainly to initially cool the ventilation air. The maximum cooling power of the whole system amounts to 210 kW. In order to reduce operational costs, it has been assumed that the system will also produce cold in a passive way (i.e. when a heat pump does not produce heat, ice water is cooled naturally by the ground probes). As the cooling agent (33% solution of propylene glycol) has variable parameters depending on the current and periodical load of heat pumps, additionally, secondary freon coolers, fed by the individual condensation aggregates, will be installed in ventilation units servicing the auditorium and the art coffee-shop.

Air-conditioners which operate in VRF and Split systems have been installed as the third air-conditioning system. Two VRF systems with total cooling power of inner units of 194.7 kW have been applied. Two sets of Split air-conditioners with total cooling power of 10.5 kW have been installed in technical rooms (server room and electrical switchboard). An additional asset of the designed solutions which use VRF and Split air-conditioners is that thanks to the application of external devices such as heat pumps, it is possible to provide alternative room heating by the air-conditioners. In the case of VRF systems, the devices can operate in the heating mode with outside temperature below -20oC.

Heating systems

The majority of utility, storage and technical rooms will be heated by means of a central heating unit. The calculation parameters of this installation are: 75/55oC and total heating power of 98.5 kW. The current heating power in storage and technical rooms will be adjusted with the use of conventional thermostatic heads. In the case of utility rooms, thermal servo-motors working together with zone controllers and room temperature sensors have been installed on the radiators’ control valves. The BMS system will send details on the required temperature for a particular room to a zone controller. The solution enables an automatic control of stand-by temperature in unused rooms and the elimination of accidental simultaneous activation of heating and air-conditioning systems. It will have a direct impact on the reduction of operational costs.

Apart from the central heating unit, a technological heat installation has been designed. The calculation parameters of this installation are: 50/35oC and the heating power of 376 kW. The installation will be responsible for the feeding of water heaters in ventilation units and the air curtains protecting the main entrance to the Jubilee House. A bivalent system based on heat pumps and a cascade of condensation gas boilers will be the source of heat for the above installations and for the installation of hot utility water for the Jubilee House. The heat pumps system is composed of the lower heat source with ground probes (64 probes, each reaching the depth of 100 m), circulating pumps, buffer tanks on the side of the lower and upper heat source, as well as two heat pumps. The total heating power of the heat pumps amounts to 310 kW with the parameters of the heating water leaving the buffer tank of the upper heat source of 50/35oC. The gas boiler room will be based on a cascade of suspended gas condensation boilers with the maximum heating power of 420 kW with the parameters of the heating water leaving the in-built hydraulic coupling of 75/55oC. Such a distribution of power was a result of the limited space available for the ground probes of the heat pumps, the imposed parameters of the previously constructed central heating unit, as well as from the requirements of the hot utility water installation.

The whole system will:

- combine two installations with various requirements as far as the temperature of the heating agent is concerned,
- ensure adequate supply of individual heating circulations,
- provide for the maximum utilization of the cheapest heat source available,
- thanks to the smart management of the available heating water, ensure the reduction of consequences of possible failures,
- facilitate settlement of the heating and cooling energy delivered to the particular parts of the facility,
- substantially reduce operational costs.

BMS (Building Management System)

KLIMAT SOLEC also supplies automation systems necessary for the functioning of HVAC systems in accordance with relevant design principles. Yet, the key role is played by the BMS system. This superior management system establishes the operational schedule for all HVAC devices and additionally supervises their status. The BMS system enables a further reduction of operational costs and a rapid removal of all defects.