Solar Heating and Cooling for the City of Gleisdorf – Optimisation of the Control Strategy
Abstract
In June 2008 a system for solar thermal cooling and heating was put in operation in the Town Hall and Service Center of Gleisdorf, Austria. This was realised in the framework of the EU FP6 project HighCombi. Cooling energy is generated by an absorption chiller at one side and by a desiccant evaporative cooling (DEC) device at the other side. The whole installation is equipped with a monitoring system, capable to the IEA SHC Task38 Monitoring Tool. All measured values such as temperatures, humidities, flow rates, heat and electricity meters are logged in intervals of five minutes and are subsequently evaluated and analysed since October 2008. Based on the analysis of that measurement data, some optimisation measures on the control strategy were executed. This paper shows the influence of those optimisations on the operation performance of the system. The solar thermal driven cooling equipment, the absorption chiller and the DEC device were working as projected in general – not optimal operation conditions were caused by the conventional building equipment and appliances and the building structure itself.