MODELLING AND ANALYSIS OF AN ENERGY SYSTEM FOR AN INDOOR ICE RINK

摘要

In Norway, there are approximately 45 indoor ice-rinks that vary substantially concerning their age, offeredrnservices and their conditions. Research by the Centre for Sport Facilities and Technology (SIAT) at thernNorwegian University of Science and Technology (NTNU), has shown that the indoor climate and energy usernhave a large spread. Energy use in ice rinks is mostly triggered by the refrigeration system, dehumidification,rnheating, ventilation and to a limited extent by the building envelope. The different subsystems are dependentrnon each other and in order to understand them better a need to develop an energy model for the whole systemrnwas identified. This paper presents three dynamic simulation models, that were created using DYMOLA andrnModelica. The areas of interest are the potential of heat recovery, the use of geothermal energy, the capacityrnvariations and the energy demand of the facility on an hourly basis. The thermal heat loads which can occurrnduring different periods of the operating season were identified. These loads dictated the use of geothermalrnenergy. The results show that an additional heat source is needed throughout the year. Using an eco-friendlyrnand cost effective heat source like a geothermal well is critical for the energy budget and operating costs.rnFurther the results revealed possibilities for improvement of the simulation models, which will increase thernresults’ accuracy.