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1993-19 Gakona, AK - HAARP Antenna
 

1995-12 Wainwright, AK - Water Tank
 

2005-61-2 Kwigillingok, AK - Washeteria
 

Fusion-bond epoxy application
 

2007-28-1 Kyrgystan - Kumtor Mine Portal
 

2005-51-3 Unalakleet, AK - Bulk Fuel Upgrade
 

Probe Farm
 

1989-23 Kipnuk, AK - K-12 School
 

Russia Far East - Kubaka Gold Mine
 

1990-15 Gakona, AK - OTH-B Power Plant
 

2004-29-2 Kotzebue, AK - NW Arctic Heritage Ctr
 

2007-32-2 Kotzebue, AK - Maniilaq Health Ctr
 

2005-17-2 Chandalar, AK - Heavy Equip Shop
 

2007-28-2 Kyrgystan - Kumtor Mine Portal
 

2004-29-1 Kotzebue, AK - NW Arctic Heritage Ctr
 

1996-22 Wainwright, AK - Washeteria
 

2004-32-2 Prudhoe Bay, AK - Relocatable Heatpipes
 

Field assembly
 

2004-17 Hooper Bay, AK - K-12 School
 

2007-10 St. Michael, AK - K-12 School
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Thermopiles Print E-mail

haarp.GIF
Thermopile supporting an antenna tower at the HAARP facility at Gakona, Alaska

Thermopiles are load bearing two-phase thermosyphons that are generally used to found structures where permafrost soils exist. Typical thermopile applications follow:

  • Installation at sites with a frost-susceptible active layer where heave and pile jacking are problems. Thermo-cycling reduces frost heave forces to negligible quantities.
  • Installation in marginal permafrost where pile creep rates are high. Thermo-cycling reduces soil temperatures and subsequently reduces creep rate.
  • Installation at sites with saline permafrost where allowable stresses are reduced due to substantial quantiies of unfrozen water in the soil matrix. Thermo-cycling freezes water near piles and pushes salts away. Also proven effective for moving glycol from a piling face.
  • Installation at sites where development has increased the heat load to the subgrade. Heat transfer rates of the Thermopiles need to be sized to balance or exceed heat load.