Electromagnetic signal transmission/reception tower and accompanying base station employing system of coaxial-flow heat exchanging structures installed in well bores to thermally control the environment housing electronic equipment within the base station
US2006201179A1
Coaxial-flow heat transfer system employing a coaxial-flow heat transfer structure having a helically-arranged fin structure disposed along an outer flow channel for constantly rotating an aqueous-based heat transfer fluid flowing therewithin so as to improve heat transfer with geological environments
US6964176B2
Centrifugal heat transfer engine and heat transfer systems embodying the same
US2003145616A1
Centrifugal heat transfer engine and heat transfer systems embodying the same