Geoenergi på IKEA Svågertorp - Visualisering och uppföljning av geoenergi på IKEA i Malmö mellan 2009-2011.

Sammanfattning: Title Geothermal Energy Solution at IKEA in Malmö Visualization and monitoring of geothermal energy at IKEA in Malmo concerning 2009-2011 Author Magdalena Horn Environmental Engineering towards Energy Systems Analysis, Lund University Tutors Dr Patrick Lauenburg, Department of Energy Lund University - Lund Institute of Technology Anna Ekdahl, Sweco Environment Tobias Malmgren, IKEA Properties Problem presentation When the new IKEA store in Malmö was installed in 2009 the advertising was aiming to present the world's greenest IKEA store, where energy supply came from a geothermal energy solution. Geothermal energy solutions are classified as renewable energy since 2007 by the Swedish Energy Agency. A number of new IKEA stores have followed the same course and are using different geothermal energy solutions as energy sources. IKEA Svågertorp in Malmö is built and operated with ambitious environmental goals. The question of this report will compare and put into perspective how sustainable the IKEA store really is, by visualizing the geothermal energy solution and energy use at the store. Although geothermal energy is a well-established source of energy it is relatively unknown in today's debates on renewable energy. Also in IKEA, there is a certain lack of knowledge about how the geothermal energy solution works. It may be that the solution is relatively autonomous and invisible, even more the energy supplied from the geothermal energy solution meets the same requirements in terms of heat and cold, like other energy plants can offer. The problem presentation is summarized as follows: - To visualize the geothermal energy solution and energy utilization at IKEA in Malmö - To clarify how the electricity utilization could be lowered in the plant by continuous monitoring and implementation of new routines for collecting data Objectives The report aims to present a visualization of the geothermal energy solution and the energy use at IKEA's store in Malmö. The accumulation of energy utilization will be the basis for IKEA to follow how the geothermal energy solution supplies energy and to allow the monitoring and optimization of the plant to be improved, resulting in a good ability for reduced use of electricity. Method The project is based on a review of related documents from the construction of the geothermal energy solution at the IKEA department store built in Malmö in 2009. Discussions have been held with people who have been, or are involved in the geothermal energy solution at IKEA in Malmö. Logged and compiled data for temperature, flow and energy are visualized with graphs that the operations staff at IKEA can update regularly, and use for optimization measures and monitoring of the geothermal energy plant. Geoenergi på Ikea Svågertorp 8 Results The work with the visualization shows that some values should be logged and reported differently than in the current situation, to allow for an accurate accounting of energy use in the geothermal energy plant. Breakdown of reported electricity use for produced and distributed energy shows that the geothermal energy plants performance enables more accurate optimizations in respect to reduced electricity use. Simulations where the temperature difference from the ground water circuit is increased to reduce the flow cannot show any result indicating if the total electricity use would decline or not. Simulations are based on instantaneous values so conclusions on the optimization results are difficult to reach. There is a clear need for measured values to be logged and documented with the target to enable monitoring and optimization of the plant. In comparison to other energy utilizing commercial locals, IKEA Malmö has a low sum, indicating that the store keeps a path toward a comparatively, sustainable energy use. Conclusions The energy use at IKEA Malmö can be better illustrated and more accurately subdivided with accurate data logging. A great deal of the information contained in the current control system that are logged and measured, is not performed in a manner that would best visualize energy use and enable optimizations for a reduced electricity use in the plant. In order to follow the plant in a more accurate way, different circuits should have individual metering for the use of electricity.