IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask A Report A-D3b, Date: December 2010
Due to the fact that detailed monitoring data was not available for the whole first cooling
period, no concrete statement to the system reliability can be given. But the fragmented
measurement data showed good operation behaviors of the solar thermal system and the
cold distribution system. Additionally the feedback of the Feistritzwerke’s employees was
pretty positive in view of room comfort conditions. A huge optimization potential could be
detected in the storage charging control strategy. Currently, all five heat storage tanks are
charged (Solar, CHP) - with resulting storage losses of 65% respectively 59%! Improvements
will be reached by operating only the one high temperature tank. Nevertheless, for the
circumstance that this system was installed and put in operation with no carried out
optimization measures, the monitoring data showed quite acceptable values.
Photos
Absorption chiller Chilled ceiling, water treatment Cooling tower
Vegatable oil driven CHP High temperature storage tank External plate heat
exchanger of the solar
thermal system
Monitoring Data
Measured period
Monitoring level (according to Task 38
procedure)
Person responsible for monitoring
July 2010 - ongoing
Level 3
Alexander Thür, AEE INTEC
Phone: +43-3112-5886-26
e-mail: a.thuer@aee.at
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