USING RAINWATER IN THE PRINTING-HOUSE DAMPING SYSTEM
The air humidity in the printing house must be at 60%, in order to guarantee sufficiently damp printing paper. For this purpose, we have installed an automatic damping system in our printing premises. A probe in the room constantly measures the air humidity and then either starts or stops the sprinklers in the ceiling. We use rainwater in our damping system.
The rainwater is collected from the roof of the premises (which measures 850sq metres) and collected into a tank (which measures five cubic metres). When the damping system operates at full power, the contents of one tank of rainwater should be enough for twelve days of operations, in case there is no additional precipitation in this period. When there is no precipitation and the tank empties out, the system automatically switches to the public water supply system and uses tap water. In a period of rain, when the tank becomes full, the excess water runs to the drainage system.
According to our estimates, the use of rainwater in the damping system should reduce our water consumption by 60%.
The printing-house has three Airdolphin wind turbines made in Japan and installed by OÜ Futuren (www.futuren.ee).
The Airdolphin wind turbines have been designed for use in urban environments: the design of the rotor blades is based on the wing layout of owls in order to ensure the lowest possible noise levels.
We are working on solution, that in the future, people will be able to monitor output of wint turbines online in real time!
VENTILATION AND UTILISATION OF RESIDUAL HEAT
We have installed separate ventilation systems in our production and office premises. This allows us to switch to the ‘economy mode’ in the office at 5.00pm and to switch back a few hours before the beginning of our office hours. The ventilation system in the printing premises is adjusted depending on the work schedule and can operate around the clock if required.
Our ventilation system has been fitted with a heat exchanger which allows us to use the thermal energy released from the equipment to heat the fresh air blown inside. The residual heat from the operation of the production equipment is utilised in the production premises - it provides all the heating required in the production premises during the winter period.
The efficiency of the lamellar heat exchanger is 65%
The systems are fully automated.
SOLAR COLLECTOR TO HEAT THE WATER
We use a 7.7sq metre solar collector located on the roof of our building to heat water.
The system is like a pre-heater for the 1,500-litre boiler in our building - at first, the cold water runs through the tank which is connected to the solar panel and then runs into a larger storage unit.
There is no CO2 emission in the production of energy using a solar collector.
When there is not enough sunshine, we use the boiler room for heating water.