Värme- och kylalösningar för framtida Jägersro Hästcenter - En jämförande fallstudie av olika tekniska lösningar med fokus på ekonomisk och miljömässig hållbarhet

Sammanfattning: Skånska Travsällskapet (STS, ``The Scanian Trotting Association``) has subdivided its property on which the current Jägersro trotting and galloping arena is located. They have thereby enabled the financial means to invest in a new horse racing arena. The project aims to reduce its negative impacts on the environment and climate by selecting and integrating technologies that contributes positively for a urban sustainable development in the Malmö area. As a private landowner, STS has the authority to select what heating and cooling system to be used in order to meet their demands. This case study aims to contribute with knowledge regarding the scale and periodicity of the future heating and cooling demand. Furthermore, this study aims to detail the life-cycle costs (LCC) and emissions of greenhouse gases dependent on which heating and cooling system that is chosen. The methodology used to answer the research questions was developed by the author in a novel approach. The model combined the simulations of the heating and cooling demand with the system sizing and design as well as with the price models of electricity, district heating and district cooling in combination with the investment costs in the economical analysis. In this study, a system of district heating and cooling was compared with a ground source heat pump system. Both systems are considered to be in line with the study's objectives of being technically, economically and environmentally competitive in relation to other technologies. In an LCC analysis, the accumulated net present value for a system with higher capital expenditure (Capex) and lower operational expenditure (Opex), like the ground source heat pump system in this study, often tend to be the least costly alternative when considering long time ranges. However, in this study the base case shows that the system using district heating and cooling with lower Capex and higher Opex is the more economically feasible option in comparison to the ground source heat pump system. In the sensitivity analysis, this result is strengthened using an equivalent percentage increase for both the investment costs and the discount rate. On the other hand, if an equivalent percentage increase is applied to the energy prices (> 3.5\% per year) of electricity, district heating and district cooling, this study proved the ground source heat pump system to be the least costly alternative. In terms of greenhouse gas emissions calculated as carbon dioxide equivalents from purchased energy, the district heating and cooling solution turns out to be the better alternative according to the allocation methods used in this study. In summary, a good understanding of the activities and factors that generates a heating and cooling demand are of highly importance in order to perform a good system sizing, system design and to ensure the reasonableness of the LCC analysis.