Patent ID: 6615907
Filing Date: 2003-09-09
Classification: E01C,E04H,F25C

Abstract:
A system for controlling temperatures in a stadium having an arena (1), on which water may be frozen and thawed, and a surrounding stand (2) which is heated or cooled for the comfort of spectators, said system comprising a first channel assembly mounted in heat transfer relationship with the arena; and a second channel assembly mounted in heat transfer relationship with the stand; each of said channel assemblies being formed from at least three, generally contiguous layers (3,4,5) of corrugated sheet material, said generally contiguous layers being arranged in a stack having a pair of exterior layers separated by at least one intermediate layer, the orientation of the corrugations in one layer being perpendicular to the orientation of the corrugations in any adjacent layer for forming a plurality of channels in said generally contiguous layers, said at least one intermediate layer being perforated to interconnect the channels of said layers and to allow air supplied to a first or second channel assembly to circulate through the channels in the layers; said system including means (9, 10) interconnecting said first and second channel assemblies for circulating air between said channel assemblies so that heat supplied to, or extracted from, the air at one of the arena or the stand can be extracted from, or supplied to, the air at the other of the stand or the arena to carry out temperature control in the stadium.