Browsing by Author "Jokisalo, Janne"

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  • Aurinkosähkö kiinteistöjen energiahuollossa
    (2010) Jokisalo, Janne
     Insinööritieteiden ja arkkitehtuurin tiedekunta | Bachelor's thesis
  • Nollaenergiarakennuksen energiankulutus ja talotekniikkaratkaisut
    (2012) Jokisalo, Janne
     School of Engineering | Master's thesis
    The aim of this master thesis was to determine what the energy consumption of a zero energy building is and based on that propose building service solutions for zero-energy buildings. This thesis was made part of Indoor Climate Research Program of RYM Oy. The energy consumption of zero-energy buildings was expounded by simulating with IDA-ICE simulation program. Simulated buildings were a detached house and an office building. Here the "zero-energy building" means building which has passive house standard thermal insulation and energy efficient solutions is applied in the building. The point of comparison is the "standard building" fulfilling the minimum demands of building regulations 2010 of Finland. According to simulations, the total energy consumption of the zero-energy detached house is 51 % smaller than the standard detached house. The total energy consumption of the zero-energy office building is 37 % smaller than the standard office building. The most common building service solutions went through in the thesis. First step was determined is current building technology suitable for the zero-energy building. Second step was drafted what kind of little changes can improve the suitability of building service solution. Final step was analysed how well the building service solution suits the zero-energy building. Building service solutions for the zero-energy building were outlined based on the account of building service solutions and simulations. The E-number of the zero-energy detached house (the zero-energy office building) range 32-62 kWh/m2 (47-94 kWh/m2) and the share of renewable energy use range 45-66 % (11-57 %) depending on a draft scenario. These are the main conclusions of this master thesis. The Heating solutions of current buildings are oversized for zero-energy buildings and could be scaled down. The Cooling solutions of zero-energy buildings should be primary passive solutions. Active cooling systems could be necessary to use to prevent overheating besides in office buildings but also in detached houses. The total energy consumption of the zero-energy building must be minimized and energy which is consumed must be renewable.