Table 7 . --Sorption time constants (in minutes) for ponderosa pine 

 needle litter beds. Desorption conditions with solar hear: 80° F 

 (27° C), 90 to 20 percent relative humidity, 0,6 solar constant. 

 Adsorption conditions following solar heat: 80° 20 to 90 per- 

 cent relative humidity , 0. solar constant 







Time period 







REPLICATES ' 



1 



2:3:4 



5 



• Average 



LOADING: BULK DENSITY 0.005 g/cm^ 



Desorption 

 1 



200. 







329. 



9 



496. 



4 



305. 



9 



68. 



2 



280. 



1 



2 



142. 



3 



187 



6 



205. 



9 



371. 







131. 



7 



207 



7 



3 



184. 



2 



262 



9 



270. 



3 



431. 



5 



130. 



3 



255 . 



8 



4 



150. 







230 



1 



260. 



5 



337. 



1 



124. 



8 



220 



5 



Average 



169. 



1 



252 



6 



308. 



3 



361. 



4 



113. 



7 







Adsorption 

 1 



297. 



2 



518 



3 



521. 



4 



73. 



2 



19. 







285 . 



8 



2 



320. 



3 



423 



7 



263. 



3 



379 



3 



33. 



8 



284 



1 



3 



360. 



5 



563 



5 



310. 



7 



92 







33. 



8 



272 



1 



4 



291. 



7 



388 



9 



334. 



9 



198 



9 



28. 



9 



248. 



6 



Average 



317. 



4 



473 



6 



357. 



6 



185. 



8 



28. 



9 









LOADING : BULK 



DENSITY 



0.015 











Dp s o TVi t i on 



1 



104. 



5 



168 



6 



170. 



9 



243 



5 



298 



6 



197 



2 



2 



161. 



3 



185 



4 



425. 



6 



229. 



4 



327. 



5 



265 



8 



3 



147. 



6 



157 



4 



480 



4 



504. 



4 



95 



1 



277 







4 



121. 



2 



212 



4 



126. 



6 



172 



8 



279 







182 



4 



5 



161. 



4 



200 



4 



270. 







154 



2 



iZU 



U 



1 O 1 

 lOi 



2 



Average 



139. 



2 



184 



8 



294. 



7 



260 



9 



224 











Adsorption 

 1 



535 



1 



418 



9 



276 



5 



137 



"7 



47 



5 



283 



1 



2 



473. 







434 



9 



203. 



7 



93 



9 



34 



5 



248 







3 



483 



6 



520 



.0 



336 



2 



70 



8 



18 



6 



285 



8 



4 



444. 







426 







325 



8 



64 



2 



132 







278 



4 



5 



462 







478 



.0 



283 



8 



126 







42 







278 



4 



Average 



479. 



5 



455 



.6 



285 



2 



98 



5 



54 



9 









LOADING: BULK 



DENSITY 



0.045 











Desorption 

 1 



99 



4 



116 



.7 



222 



2 



216 



7 



551 



3 



241 



.2 



2 



82 



1 



111 



1 



252 



5 



499 



.7 



199 



1 



228 



9 



3 



127 







175 



.6 



264 



9 



588 



5 



181 



9 



267 



6 



4 



103 



9 



121 



. 1 



171 



6 



222 



5 



560 



8 



236 







Average 



103 



1 



131 



. 1 



227 



8 



381 



8 



373 



3 







Adsorption 

 1 



520 



8 



472 



.0 



264 



1 



102 



9 



47 



1 



281 



.4 



2 



504 



2 



466 



.6 



233 







150 



2 



54 



4 



281 



7 



3 



604 



5 



490 



. 8 



203 



2 



105 



6 



22 



.7 



285 



4 



4 



578 



1 



419 



. 7 



179 



1 



188 



2 



41 



9 



281 



4 



Average 



551 



9 



462 



. 3 



219 



9 



136 



.7 



41 



5 







•irU.S. GOVERNMENT PRINTING OFFICE: 1 9 7 8 0- 7 7 7- 9 5-7 4 



28 



