National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Spray-Applied Polyurethane Foam to Insulate Heated Rooms Excavated in Permafrost.

PB192302

Publication Date	1970
Personal Author	Pangels, R.; Gooch, A. E.
Page Count	48
Abstract	Spray-applied polyurethane foam was used to insulate the walls of heated rooms excavated in permafrost. The experiment was designed to determine whether polyurethane foam can be sprayed successfully on frozen ground under freezing conditions and to measure the effectiveness of the insulation in maintaining--at elevated temperatures for an extended period--a room excavated in frozen ground. The results show that polyurethane foam can be successfully sprayed on frozen ground in below-freezing temperatures. Given this type of insulation, together with winter cold to supercool the surrounding ground, it should be possible to maintain a shaft or heated room in permafrost for several years. (Author)
Keywords	Underground structures Thermal insulation Polar regions Expanded plastics Isocyanate plastics Permafrost Sprays Permafrost construction Heated rooms
NTIS Subject Category	71O - Plastics
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197016

Spray-Applied Polyurethane Foam to Insulate Heated Rooms Excavated in Permafrost.

Spray-Applied Polyurethane Foam to Insulate Heated Rooms Excavated in Permafrost.
PB192302

Publication Date	1970
Personal Author	Pangels, R.; Gooch, A. E.
Page Count	48
Abstract	Spray-applied polyurethane foam was used to insulate the walls of heated rooms excavated in permafrost. The experiment was designed to determine whether polyurethane foam can be sprayed successfully on frozen ground under freezing conditions and to measure the effectiveness of the insulation in maintaining--at elevated temperatures for an extended period--a room excavated in frozen ground. The results show that polyurethane foam can be successfully sprayed on frozen ground in below-freezing temperatures. Given this type of insulation, together with winter cold to supercool the surrounding ground, it should be possible to maintain a shaft or heated room in permafrost for several years. (Author)
Keywords	Underground structures Thermal insulation Polar regions Expanded plastics Isocyanate plastics Permafrost Sprays Permafrost construction Heated rooms
NTIS Subject Category	71O - Plastics
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197016