Avaliação Experimental Da Influência Da Inclinação De Operação De Termossifões Aplicados Em Coletores Solares Utilizando Nanofluido De Óxido De Grafeno

. Thermosyphons are passive gravity-assisted heat transfer devices operating in a two-phase cycle. They are able to transfer large amounts of heat with small temperature gradients. They are commonly used in high-pressure vacuum solar collectors, with the aim of improving the thermal efficiency of these heat exchangers. They are composed of three parts, the evaporator, responsible for absorbing heat and transferring, to the working fluid so that it evaporates and by pressure difference rises to the evaporator; the condenser, responsible for exchanging heat with the cooling fluid so that the working fluid can condense and