초록 ▼

A method to exterminate insects, for example termites, in situ, whose situs is embodied within an urban structure. Gases that undergo no phase changes in the temperature range between ambient and lethal temperatures are directed on the structure to heat the structure itself to a temperature that is

A method to exterminate insects, for example termites, in situ, whose situs is embodied within an urban structure. Gases that undergo no phase changes in the temperature range between ambient and lethal temperatures are directed on the structure to heat the structure itself to a temperature that is lethal to the insects, and maintaining that temperature long enough to kill the insects.

대표청구항 ▼

A method of exterminating wood-destroying insects in situ whose situs is embodied at a substantial depth inside a wooden structural member of an urban structure having surfaces, said method comprising: heating an environmentally acceptable gas which does not undergo phase change at any temperature b

A method of exterminating wood-destroying insects in situ whose situs is embodied at a substantial depth inside a wooden structural member of an urban structure having surfaces, said method comprising: heating an environmentally acceptable gas which does not undergo phase change at any temperature between ambient and the temperature utilized herein, to an elevated temperature; applying said heated gas to surfaces of said structure until the temperature of the wooden structural member at said substantial depth reaches a lethal temperature at which said insects cannot survive for a significant length of time, and maintaining said lethal temperature at said substantial depth for a period of time necessary to assure the death of said insects, said heated gas being supplied at a supply temperature higher than said lethal temperature; said application of heated gas being accomplished in such a manner that the heated gas circulates so as to provide for improved heat transfer to the surfacer of the structure and to avoid thermal stratification in the structure.