A method for the operation of a circle, which is constructed as a solar thermie barrel fluid handling device

摘要

Solar thermie circle barrels with a drain - back - system can be located on the outside during the filling of a freezing point, even though in the solar collector a high temperature prevails. This freezing is intended to prevent.The method according to the invention comprises an activation of a pumping start program in the case of a pumping activation. This comprises a preset a quantity of fluid to be conveyed; a fluid introduction sequence, comprising the conveyance of the predetermined quantity of fluid from a first line section in an unfilled second line section in the outer region; as well as a fluid return flow sequence, comprising determining a return current temperature of the returning fluid. Subsequently, the presetting of the delivery rate is increased and either the previously mentioned steps repeated, whenever the feedback current temperature greater than or equal to a reverse current - threshold temperature and the increased input of the fluid to be conveyed is less than or equal to a limiting quantity; or the pumps start program is deactivated and a standard operation of the pump when the increased input of the delivery rate is greater than the threshold; or pumps start program and the pump is deactivated as well as the specification of the fluid to be conveyed is reset when the feedback current temperature falls below the return current - temperature limit.