Solar heating system, method and apparatus for diagnosing an amount of air in a solar fluid circuit filled with a solar fluid and for operating a solar heating system

摘要

Method for diagnosing the amount of air in a solar fluid circuit (K) filled with a solar fluid (F) with a solar collector (4), in particular in a solar fluid circuit (K) of a solar heating system (1), the solar fluid (F) being supplied by means of a controllable conveying device (12) is conveyed through a riser (3a) and a downpipe (3b) of the solar fluid circuit (K) and the riser and downpipe are connected to one another at a high point and a low point, characterized in that the beginning of an overflow of the solar fluid (F) above the high point is detected and a speed and / or a power consumption of the delivery device (12) is detected and evaluated in relation to its residual delivery head in order to diagnose the amount of air present in the solar fluid circuit (K) from the speed and / or power consumption required to generate the beginning overflow.