Patent ID: 8534347

Claim:
A heat sink for exchanging heat with an object, comprising: a hollow sealed enclosure, at least a portion of said hollow sealed enclosure being thermally conductive; at least one fluid inlet tube connected to said sealed enclosure, and configured to deliver fluid to said sealed enclosure; at least one fluid outlet tube connected to said sealed enclosure, and configured to remove fluid from said sealed enclosure; a return tube configured to receive fluid from at least said at least one outlet tube for return to a source of fluid; said hollow sealed enclosure being configured to expand under positive pressure within said enclosure and contract under negative pressure within said enclosure; wherein when fluid is injected at above a minimum pressure into said hollow sealed enclosure, said enclosure will fill and then expand; wherein when said fluid is withdrawn from said hollow sealed enclosure, said enclosure will contract; and wherein said return tube extends through an interior of said enclosure.