University of Twente Student Theses
Driving Sustainability in Swiss Multi-Family Housing : A Comprehensive Carbon Footprint and Optimisation Analysis of a Sustainable Heating System
Hijwegen, R. (2023) Driving Sustainability in Swiss Multi-Family Housing : A Comprehensive Carbon Footprint and Optimisation Analysis of a Sustainable Heating System.
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| Abstract: | This thesis also focuses on devising an optimization approach to create an innovative heating system for Swiss Multi-Family houses, utilizing solar-powered heat pumps. This system caters to Domestic Hot Water and Space heating, with excess heat stored in a Seasonal Thermal Energy Storage (STES) unit. A multi-objective function considers minimal costs, self-sufficiency, and carbon footprint, incorporating specific weighting and normalisation factors. Varied factors are explored, including tank types, dimensions, solar panel count, and orientation. Sensitivity analysis reveals significant effects of HyTES tank and solar system dimensions, while Domestic Hot Water tank variables have minor impact. Preliminary optimization results present three scenarios (78%, 84%, 97% self-sufficiency) with the most favorable system reaching 78% self-sufficiency. It exhibits low life cycle costs, competitive with oil boilers when incentivized, and notably reduces global warming potential compared to the base case. An analysis of the main contributors to system costs and carbon footprint across different scenarios identifies Operation and Maintenance costs and the solar system as the most significant cost drivers. In contrast, the solar system and grid electricity significantly influence the carbon footprint. Interestingly, the seasonal thermal energy storage’s contribution to both system costs and carbon footprint escalates notably at higher levels of self-sufficiency. These findings demonstrate the utility of the carbon footprint implementation and optimisation strategy for optimising the HyTES system. |
| Item Type: | Essay (Master) |
| Clients: | Hochschule Luzern, Horw, Switzerland |
| Faculty: | ET: Engineering Technology |
| Subject: | 52 mechanical engineering |
| Programme: | Sustainable Energy Technology MSc (60443) |
| Link to this item: | https://purl.utwente.nl/essays/96742 |
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