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Image 5 of Kentucky farm and home science, vol. 6 No. 3 summer 1960

Part of Kentucky Agricultural Experiment Station

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It also was found that when the roof’s bottom ute air movement. VVhen the roof covering was ,1 layer (underneath the rafters) was either aluminum changed to aluminum sheets, a reflector, the velocity r foil (a good reflector of radiant heat) or half-inch- slowed to 55 feet per minute. " iiiiok insulation board, iiioio Was Vofy iiiiio diH<;>r- It was found that when the bottom layer of material P _: onoo inndo by iiio material Pot on tiio ioP <<>utS¤d€> was omitted, the heat transferred from the bottom side roof. Thrs rs because arr circulating between the Of the root, botb by thgrinal radiation arid by Coiiyac- _ `” toP and boiioni inYoi$ kopt tho bottom inYoi` oooi· tion, increased. This, of course, was simply because · ` Several materials were used rn the test, aluminum, the riridarqayar acted as an irisriiatory rajactirig heat ;_ gniVoniZo€i n`on and Pio$iio» for iiio outside ooVoi" transfer from the roof. Removing the bottom layer ' ing- For tiio boiioin (insido ooVoi`ing) he iisod also removed the trough (duct) arrangement be- _ iiboi booi`€i» Pin$iio» aiummum ioii» and in oonibin‘ tween the rafters, and part of the cooling effect from _ air circulation was lost. V if gr it·i)i E ’i'i»‘ i i=‘f¢‘ ·.,· · irtf , _i,f i _. ` jj rr P&1`l<€1' said tl1€ test €I13.l)l€(l lillé (l€]_)&1't1n€1]t tt) · f·.ii ,i__V, =.. ,,·_f_,° 3 if _ draw up plans for a gabled roof building where the " ‘i‘»‘‘‘· *‘‘‘ ‘·‘’i‘‘‘‘‘‘ i ’i=-»··r .»,» -V/i_.;~ rrrtr nlnnvl oooling “elfects” would be of value. Right now it is A iI‘—-‘“»’~ _‘i)i JQ "" ` ‘‘‘‘i “ ‘t’’‘ ’ f’'i`’“ being used in a poultry house plan (No. 727-17). _ v ,,.,_ i ( ~‘ii ~ ··~- =·»»~ V 'r_VVr·;__ry· __ ( (Ky, Misc. Pub. 165 dealing with poultry houses also - - v r_ ;’‘‘ contains the roof plans and a resulting ventilation de- __ eyes) ·· _, ia ..” ' I · ;=§§2§’$§2$€€ Sign ) _ ti,/;·¥~a;•···g _,·· _ Parker sa s the ex Jerrment has led them into ·;Z¤··§:¥·: · szjiy :*‘°:;`;t · y I — ro other Helds of study on ventilation and air circula- -· ' _,_¤ ·‘ .... v_ ___,_ ; N. tion atterns in closed animal structures and heat- t. ' _ 2 ..... · “ ’ . r :p__. r___ transfer through roofs. 1 E;} tr HS; -=_;r,::::;;E;;v,;;; .,.,-=:;:;.- ·`*· _ M i 2 ’:;y,,.,y,;"< i ar strata lr {— . { ·' . waxy; g t i—, X ¤ o (1 R h · ,. ar -4* . a .` _ ‘~Qi~·»t wt ~ *··~* 5 - ¤*'[;a=;. _ _ 31‘1€ €S€3I‘C 4 ·i_ l' :1 _`>-‘ W iép , · - " ;` I H ji _:__ A tvvvprl _ • r V ‘·t` ir f ‘ r —;· ·-;Y ,: is i ,4 _ rxh WM !· ; gg}; N g __ I ER , vvlr e._ ‘· I _— ·#i· H;. =.€ ly · .==. z A ‘ ·"" ......... ‘ i 1 ‘ · ‘ ‘ ·=·;=i z. X; » · _ ve*‘ ;..~ ~ · -· W ."’z. g F roof would reach SO feet per minute. This rs very close PEM H k Pfum 5 iss Emu (il L if I iilnnff S 0 him g to one mrle an hour speed. Heat lamps were used *1 Q m tut mtmn Yiumsu {K “il‘li'>C in the laboratory testing to produce something ig']? lgdm P"““‘ 1%;; tm °;"‘§"’ 5} *“‘{ li‘° { nearly equivaicm to Sunlight la tc corrrfstcersluizt) · itountls ess ttt tran 2 In this test hc found that black talvanrzed roof- tm MUG 5 O1 (mi imum 5 him . > B ~® ing, which absorbs heat, produced the 8()—foot a min- (C,,,,rim,Ud mi pugc 8) ez Krsxrucrtr FARM AND Home Seamen- SUMMER 1960 5 {A i'