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The 2Barevné Letňany project is executed by Trigema a.s., which has completed successful residential projects in Prague-Radotín, Jinonice, Stodůlky, Roztoky u Prahy and Letňany, which comprise more than 1000 new flats. www.trigema.cz
Low energy buildings have been designed and built in such a manner to reduce the costs of operation, compared with civil engineering structures build in accordance with current standards and rules. These costs include, primarily, heating and ventilation, cooling of air in summer, service water heating, power and water consumption.
But what exactly does it mean in the Two Colour Letňany Project?
Two Colour Letňany Estate have been classified B-level, i.e. low-energy buildings (lower heat consumption than standard buildings in B category, in accordance with the energy label of the building.
In the Two Colour Letňany Project, this has been achieved by Porotherm insulation brickwork and triple-glassed plastic windows guaranteeing almost perfect thermal insulation of our new houses. The air handling system guarantees pleasant environment with minimum costs.
Whereas previous civil engineering projects accepted air change through leaky windows, contemporary apartments in low energy houses are almost hermetically closed units, where adequate air exchange is provided by air handling system.
Thanks to heat recovery, fresh air is heated by exhaust air, thus reducing heat losses caused by ventilation. The heat generated in the apartment remains in the interior and fresh air from outside is pre-heated to pleasant temperature.
Each heat recovery unit has additional electric air heating system, which is sufficient for heating low energy apartment with minimum power consumption.
Efficient air handling system with heat recovery unit guarantees air exchange amounting minimum 10 per cent of air volume in the apartment each hour. Hence, whole air in the apartment will be changed in ten-hour´s time, which significantly improves air quality, both in terms of carbon dioxide content, smell and air moisture. The entire system is controlled and its performance can be increased several times.
Two separately adjustable subsystems are installed in each apartment, the one removing air from the kitchen and the other from other rooms. For instance, you can boost air exhaust from the kitchen during your cooking, while allowing minimum ventilation of other rooms.
A new feature of the 2nd project stage is extension of the air handling unit to add cooling system of incoming air in summer ( by approx. 10°C, which is substantially more favourable for human health than air-conditioning). In the 2nd project stage, the air handling unit has been inter-connected, i.e. booth functions (cooling and heating) are integrated in one system. Local electric air heating units installed in all apartments allow additional heating of incoming air.
All benefits of this system will become apparent only by personal experience of every occupant, nevertheless, it is sure that this system will increase living comfort in the apartment. And we also have received only positive feedback from the occupants for the following reasons:
To obtain ideal building static parameters, green houses in Letňany are made of quality fired bricks, starting from the first storey. Even in the age of alternative building materials, fired bricks maintain their privileged position, first of all, owing to high quality and long-time durability. They have been used for thousands of years and even now they are highly appreciated as a building material with excellent properties.
Made by one of the most significant manufacturers, the bricks used for construction of the Two Colour Letňany Estate are ideal choice for low energy houses. Well-tried material, sophisticated perforation system and, last but not least, processing quality make Porotherm brick indispensable component of any high-quality and cost-effective building project.
Benefits of houses made of bricks:
Plastic windows become ‟green ‟ standard in most of new houses now, yet, we are again a step ahead of the competition, thanks to offering triple-glassed windows to our customers. Compared with double-glassed windows, they guarantee better thermal insulation and unmatched parameters vs conventional windows.