Figwce 1. — Fuel bed located in environmental ohamber. 



NO SOLAR 

 RH = 90 % 

 DB = 80°F 



NO SOLAR 



RH = 20% 

 DB = 80° F 



NO SOLAR 

 RH = 90% 

 DB = 80°F 



2 - 3H0URS 



STABILIZATION 

 PERIOD 



24 HOURS 



DESORPTION 

 CYCLE 



24 HOURS 



ADSORPTION 

 CYCLE 



Figvcpe 2. — The environ- 

 mental conditions for 

 the tests of moisture 

 response time during 

 first phase; a 0.6 

 solar constant was 

 added for solar heat- 

 ing during the de- 

 sorption cycle of the 

 second phase of the 

 tests. 



4 



