Road structure – process – or apparatus – Process
Patent
1989-06-19
1991-11-05
Neuder, William P.
Road structure, process, or apparatus
Process
404 79, 405234, 165 45, F24J 308, F28D 712
Patent
active
050627368
ABSTRACT:
Snow lying on a road or building structure is melted and removed without sprinkling water on the snow by pumping up from a well and circulating underground water, which is contained in an underground aquifer and warmed by geothermy of the aquifer utilizing the heat retaining function thereof, through pipe arrangement laid under the surface of the road or building structure. The used and cooled underground water is returned into another artesian well without being wasted and exposed to the atmosphere. Underground water warmed by the solar heat and stored in the aquifer in a hot season may be preferably used in a cold snow season. An antifreezing liquid may be filled and circulate in the pipe arrangement to perform effective heat transfer through a heat exchanger between the antifreezing liquid and the underground water which circulates from one well to the other well. A pipe having excellent crystal structure of the welded joint portion can be used for the pipe arrangement.
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patent: 4693300 (1987-09-01), Adachi
Hiyama Takayuki
Katsuragi Kohei
Neuder William P.
Nihon Chikasui Kaihatsu Kabushiki Kaisha
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