Multilateral Projekt Plus – Energy House Secondary Forestry School , Prešov

1. Multilateral Projekt Plus – EnergyHouseSecondaryForestrySchool, Prešov Slovakia

2. Plus – EnergyHouse

3. 12 steps to ourenergy plus house • 1.Structuralconditions • 2. Conceptualconditions • 3. Increasedthermalinsulationenvelope • 4. Preventionofthermalbridges • 5. Passive use of solar energy and thermal storage • 6. Active use of solar energy • 7. Optimally chosen heatingsystem • 8. Energyefficientpreparingof hot water • 9. Ventilation device with heat recovery • 10.Efficientuseofelectricity • 11. Consciousbehaviorofusers • 12. Positive ecological balance of the house

4. 1. Structuralconditions • Placement ofbuildings on the southern exposureisespeciallyimportantdirection of slope on sunny side. • Weather conditions in the area affecttheconsumptionheatingenergybuildings. Directing the appropriate property in wind direction, improving the aerodynamics of the building (compact form), limiting the height of a suitable layout of the surrounding vegetation.Rivers and lakes moderates temperature fluctuations, and therefore have an important function of climate. • Wooded areas have a significant regulatory role for the local climate, air purification, retain moisture and regulate the humidity and ambient temperature, protected from the wind, create leisure and recreational areas. Planting trees and shrubs can be protected upper house from the effects of wind, cold and noise, and additionally improves air quality.

5. ClimateConditions in Prešov • Latitude :48°59′47.22″ N • Longitude :21°14′19.39″ E • Altitude : 296 m. n. m • Solarradiation : 1225 - 1275 kWh/m2year • Avaragetemperature : 8 – 11 ° C • Prevailingwinddirection : The annual average prevailing direction: north – 22, northwest - 20Next: South - 19, North East - 13, South East - 11, southwest - 6 West - 2 East - 2, with no wind - 5

6. 2. Conceptualconditions • In shapedesigning of the house we assume the condition, thatwillbe the required volume at the lowest surface structure (the optimal shape is a sphere, respectively hemisphere). Compact, rugged little building with a few breaks, projections or balconies has a smaller loss of heat transfer.

7. 3. Increasedthermalinsulationenvelope • Windows - the majority of households lost more than 25% of heat through windows. Therefore, anenergy-efficient house is in the north, east and west windows in the area from 8 to 9% of thefloor area. And then increasing window area on the south side of the house about 12% of thefloor space. • The roofs of these houses are notably known to need high heat protection therefore should be chosen such a roof in which we achieve theminimum ofheat loss. The ideal solution would be a sphere or hemisphere. It is known that this shape is not very practical forcommonliving. The ideal shape of the roof would be less elongated rectangular with the longer side and reversed on the south roof, slightly inclined to the north. • http://www.youtube.com/watch?v=VFjxWdPPY1Q

8. HeatLoss

9. 4. Preventionofthermalbridges • Thermal bridges arise in theplaces, where they are connected to each other building materials with different thermal conductivity.The thermal isolation bridges reduce internal temperature. Thiscanlead to otherproblems : condensation, moisture, mold growth, creating cracks etc. Therefore, the correct design and theproper insulation of thermal bridges has a significant potential benefits: • Prevention of structural problems: surface condensation, aesthetic problems, cracking • Protection against mold • Reducing heat loss - saving energy (heat loss due to conductivity can be reduced by 10%)Improved thermal comfort

10. ThermalBridges

11. 5. Passive use of solar energy and thermal storage • The essence of the concept of a solar house is a passive use of solar energy - thus heating of rooms direct sunlight. The energy consumption for heating is about 10 to 20% lower than standard buildings. The main principle is focusingofall the large windows on the south. • Protection against overheating of the building: The primary objective of the summer thermal protection is preventionagainst overheating of theinternal space. It should bealso restrictedto use of electrical and ventilation equipment to apply less demanding, but itmustbeeffective enough to measure such as mechanical shielding, adequate ventilation, favor massive mass of buildings and waterareas.

12. SolarEnergy

13. 6. Active use of solar energy • Active solar heating system uses solar energy and transforms it into heat energy. Solar systems are mostly used for heating water, heating swimming pools, greenhouses,etc. It can be used to support heating.

14. 7. Optimally chosen heatingsystem • Terms of the heating system can be summarized into three basic groups: • Building requirements - architectural and urban concepts of construction, its layout, thermal properties of building structures and outdoor climatic conditions. These requirements relate to the shape, location and properties of building materials. • Requirements for heating system - the fuel base available, the use of space heating, thermal comfort requirements. • Operationalrequirements – requirements for operation, maintenance and comfort, esthetic and more. • When you have whatever heating system, make sure that it is designed and tailored exactly to your house. Just so there is a presumption of economical and safe operation.

15. HeatingSystem

16. 8. Energyefficientpreparingof hot water • Use equipment economically and environmentally appropriate, such as heat pumps are powered by natural refrigerants such as ammonia (NH3) • In particular, energy-saving applications are mainly linked to     heat recovery from industrial processes. Produced waste heat can be profitably reused in buildings - potential that is barely used for a long time

17. 9. Ventilation device with heat recovery Whatis a heatrecovery? Recovery or heat recovery is a process , wherethe air is supplied to the building hot exhaust ofair preheats. Therefore, warm air does not escape through the open window, but in the recoveryexchanger transmitted most of its heat supplied to fresh air. Main advantagesofheatrecovery : - provides the necessary fresh air - provides healthy microclimate without moisture, without the occurrence of mold, withoutpollen and dust-free

18. PrincipleofHeatRecovery

19. 10.EfficientUseofElectricity • Use • energy • efficient • equipment

20. Lightning Using ofeconomical bulbs

21. 11. Consciousbehaviorofusers • Qualified staff, consideration of the day and season, proper operation of technical equipment, limiting the heat losses due to ventilation, windows, etc.. • Averageannualenergyconsumption in standbymode : • TV 9.03 eur • Radio 7.46 eur • Microwaveoven 4.31 eur • Satelite set 47.36 eur • PC withallcomponents 57.23 eur

22. 12. Positive ecological balanceof the house • Taking into account the balance of the total life cycle, theenergy plus housessatisfy allthe criteria with a positive impact on thecreating ofa healthy indoor climate etc..

23. Thankyou • foryour • attention • Have a nicejourney to Slovakia