PROBLEM TO BE SOLVED: To provide a heat relay that facilitates switching modes of heating and cooling.;SOLUTION: This heat relay includes a first wickless heat pipe and a second wickless heat pipe respectively having first ends and second ends, both of the first ends of the first and second wickless heat pipes configure a connection end connected with the same heat transfer object, and heat transfer mode is switched by simultaneously reversing a relative position in the gravitational direction of the first end and the second end of the first wickless heat pipe, and a relative position in the gravitational direction of the first end and the second end of the second wickless heat pipe.;COPYRIGHT: (C)2012,JPO&INPIT
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