Kyla i Nyköping och Motala : Kartläggning av kylapotential för Vattenfall Värm

The Swedish energy company Vattenfall is currently the owner of the district heatingsystems in Nyköping and Motala. To be able to also offer cooling solutions tocustomers are becoming more and more important. This report describes the resultsof an investigation of the cooling market in the two cities and the potential needs forcooling today and in the coming 20 years. The total potential for the coming 20 yearsis estimated to be roughly 17 MW for Nyköping and 9 MW for Motala.Two possible district cooling systems for each of the two city centers was modeledand a comparison was made between different cooling techniques namely absorptionand compressor chillers.Absorption chillers driven with district heating during the summer is one way ofincreasing the load in a combined heat and power plant and thereby the possibleelectricity generation. The cost of heat production must be low for absorption chillerto be able to compete as an alternative. The cost for the increased heat load becauseof absorption chillers was simulated with results showing a cost of 34/MWh kr inNyköping and 143 kr/MWh in Motala for the two district cooling cases.Investment calculation showed that neither of the systems in the two cities areprofitable with a required rate of return of 7 %