Värmedriven komfortkyla i Stockholm: Teknologier och marknadspotential

Abstract: The fastest growing use of electricity in buildings today is that of cooling applications. The energy used for this has more than tripled from 1980 to 2018. In Stockholm, as in many other cities, a recurrent ptoblem during summers is power peaks in the electric grid. This often leads to the purchase of non-renewable electricity instead, which in today´s society is something that is considered good.  During summer the need for cooling is at its largest, while the district heating system is almost unused that time of year, although it still keeps a high temprature. This is due to the fact that waste is being burned all year around, which provides energy to the district heating system.  This thesis aims to investigate heat-driven cooling in Stockholm, a technique that has the ability to utilize this energy. In the theory section some techniques for this have been explained - these are absorption , adsorption and evaporative methods. A case is made where it is examined approximately what traditional compressor-driven colling usually costs. This was done to get a break even cost-scenario for the heat-driven techniques. The demonstrated conclusion is that heat-driven cooling very well can be an ecenomically profitable option compared to traditional alternatives. Beyond this, heat-driven cooling also has the capability to reduce the stress on the electric grid during the summer months in Stockholm, which also contributes to, among others, positive externalities.