The main purpose of this thesis was to evaluate the energy use and the potential for energy savings in the ventilation for a hotel building that has been preliminary certified in the Swedish environmental assessment method Miljöbyggnad. In the preliminary certificate the building received the certificate SILVER for the energy use. This certificate needs to be verified in order to acquire the final certificate. The energy use was determined with data from energy meters and statistics from the energy provider. The potential for energy savings in the ventilation was evaluated by analyzing the effects of air flows, room temperature and supply temperature on the energy use and the room climate with the help of the simulation program IDA-ICE. The results show that the energy use in the building is 119 kWh/(m2, year), which equals the certificate BRONS in Miljöbyggnad. The certificate for SILVER will not be achieved. The biggest energy consumers are the heating system, the hot water system and the cooling system. They stand for 36, 21 and 19 percent of the total energy use, respectively. With energy savings measures in the ventilation the energy use can be reduced by 8 kWh/(m2, year). This would mean that the energy use can be reduced to 110 kWh/(m2, year). The building would still receive the certificate for BRONS. The energy savings, however, would be achieved by using a lower supply temperature, minimum air flows (0,1 l/(s, m2)) when rooms are not used as well as decreasing the time schedule for the ventilation by two hours and allowing the maximum temperature to rise by 0,5 degrees Celsius. This also resulted in a higher temperature in the conference rooms, where the temperature could reach up to 24,2 degrees Celsius in winter and 24,5 degrees Celsius hot summer days.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-415344 |
| Date | January 2020 |
| Creators | Forslund, August |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | UPTEC ES, 1650-8300 ; 20012 |
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