University of Twente Student Theses
Opgewekt op de flat : het opwekken van hernieuwbare energie in appartementengebouwen.
Jeurink, H. (2018) Opgewekt op de flat : het opwekken van hernieuwbare energie in appartementengebouwen.
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| Abstract: | The Dutch government introduced a new law for sustainable building, the so-called BENG, in order to stop climate change. At Trebbe Wonen B.V. it turned out however that the rules concerning energy generation are difficult to meet for their apartment buildings: at least 50% of the energy demand must be First, all possible techniques are summarized, out of which a selection is made to be evaluated: (1) Air source heat pump; (2) Solar energy; (3) Geothermal heat pump; (4) Wind energy. According to the energy performance calculations, it turns out that all concepts can meet the BENGrequirements. However, wind-energy is on the edge and won’t be sufficient without any other sustainable system. The use of solar and wind energy is on the other hand more promising, even for higher buildings or more strict requirements. Secondly, costs are evaluated. As for the investment, the air source heat pump is the cheapest with additional costs of €1100, a collective geothermal heat pump is the most expensive with over €8000 of additional costs (compared to the reference situation). Using solar energy is affordable too: about €2500 of additional costs. Costs for the wind energy system have not been released. The heat pumps have higher maintenance costs though, which makes this less profitable on the longer term. Besides, the lifetime of heat pumps is shorter than solar panels or collectors. This makes the life-cycle costs for air heat pump and solar energy comparable, despite different investment costs. Looking at other aspects, also efficiency is evaluated: geothermal heat is very efficient and constant throughout the year. An air sourced heat pump and solar energy generate however the most energy in summer, whilst the main energy demand is during winter. Besides, air heat pumps and a wind turbine can cause noise disturbances. A low temperature water distribution system has low energy losses, but needs an expensive system to boost temperature for the use of tap water. Finally, air heat pumps are not quite esthetic, but a solar wall or wind turbine can on the other hand modernize a building’s appearance. All in all, the multi-criteria analysis states that solar energy should be used (combination of solar collectors and solar façade). Only considering costs, the air sourced heat pump would be best, as long as the building’s height does not exceed circa 5 floors. Solar energy is however suitable for higher buildings. The application of a solar façade leads to the need for investigation of the local power grid and next to that the possibility of use of energy storage. |
| Item Type: | Essay (Bachelor) |
| Faculty: | ET: Engineering Technology |
| Subject: | 56 civil engineering |
| Programme: | Civil Engineering BSc (56952) |
| Link to this item: | https://purl.utwente.nl/essays/77452 |
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