Overview of operation period

The results presented here correspond to the operation period from June 4th, 2007 to December 1st, 2007. From these 180 days the system was in operation during 108 day. The days without operation were either weekends or days without monitoring data due to a lightning stroke into the data acquisition system. Within these 108 days 1034 hours of operation were registered. In some hours the machine was in operation only a few minutes, but in most of the registered hours a

continuous operation was observed. In Table 1 the number of hours with an operation time within given limits is shown.

Operation

mode

Number of hours with an operation time t (in minutes) within the given limits

<15 min

15<t<30 min

30<t<45min

45<t<60 min

60min

cooling

65

23

36

37

282

heating

56

72

28

73

398

solar

39

35

34

26

176

Table 1.Statistics of the operation hours

4. Operation results

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