Heat solar collector for transmitting solar energy received by heat exchange coolant, has closing unit comprising actuating unit with shape memory alloy to open closing unit beyond preset temperature of collector

摘要

The collector has an air-knife (4) i.e. lower air blade, comprising a ventilation opening (6) that is closed or opened by a closing unit i.e. trap door (10). The closing unit comprises an actuating unit with shape memory alloy to open the closing unit beyond preset temperature of the collector. The shape memory alloy is selected among titanium nickel based alloy or copper based alloy, where the shape memory alloy comprises phase changing temperature ranging at 15 degree Celsius. An independent claim is also included for a method for ventilating a heat solar collector.