F - Mech Eng,Light,Heat,Weapons – 24 – H
Patent
F - Mech Eng,Light,Heat,Weapons
24
H
126/1
F24H 1/06 (2006.01)
Patent
CA 1158119
PORTABLE CONSTRUCTION HEATING SYSTEM: ABSTRACT. A portable construction heating system is described in which flexible heat elements are placed in close proximity to objects of various shapes and configurations which would otherwise be difficult to heat. The heating elements are comprised of flexible hoses which contain a circulating preheated liquid. The primary object of this invention is to provide an improved method of applying heat to fresh concrete which has been placed in pre-constructed formwork during extreme cold weather. The advantage is that heat can be applied to virtually any shape of formwork including structural beams, walls, vertical columns and slabs, and together with the application of a tight fitting insulating cover provides an economical means of preventing damage due to freezing during the curing process. Conventional heating methods utilize direct fired forced air heaters which are placed inside of temporarily constructed hoardings or enclosures. Due to the nature of open flame heaters the enclosures must be large and therefore are costly to construct and uneconomical to heat. The temporarily constructed enclosures offer little resistance to wind damage, and are obviously a fire hazard. The heat is generally too great at the source and too little at the far end of the enclosure. Conventional heaters produce carbon monoxide fumes which attack the concrete curing process rendering this equipment undesirable without heat exchange fitments added.
402499
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