Calculation software. DanCap. AG_31-008_Geothermal_021607b.pdf (application/pdf Object) Learning Institute Seminar and Course Descriptions. Hydronic Heating Systems The Effect of Design on System Sensitivity. Abstract: This thesis starts from the recognition that a hydronic heating system can be optimised, but can never be totally perfect. Sooner or later, in practice, deviations - caused by one or more components having slightly different characteristics or settings than they are assumed or supposed to have - arise.
The aim of this work is to show how system design affects the overall sensitivity to deviations, in terms of the effect on performance and return water temperature. The systems that have been analysed are radiator systems and air heaters controlled by valve groups, both supplied by heat from district heating. In particular, the analysis has been concentrated on differences between high-flow and low-flow systems. Based on fundamental theory in this area, as well as on physical measurements made in test rigs, models have been developed and/or applied in order to investigate system function in the desired manner.