Document n96aQXZ2xwv1DQeaNNEK8Z3B1

_____________________________________________ American Society of Heating and Ventilating Engineers Guide, 1928 Chapter II--Heating by Radiation Results reported by Frost and others indicate that the increased heating efficiency noted with enclosed radiation is due to increased air circulation caused by flue action of the enclosure. While the use of an enclosure often retards heat emission from the radiator it is counter- M ote: 3oter aa mt o r 7* e m p e/ra tis rac o n s ta n t o t 2 /6 #/ T 3 re o t/> /n g L in e 7 a m p - ` 6 Q r. ___________________ Case J ___________ ; l < 2 0 Section, 38 "J C o /o m n ^ira ct) C l. K foter 7ppo ^ a d /o to r used in o // P60Z V !L N d 'O d >s. "S. $ Qi Ol Oi >* oi d * 462.3 , 5? "v Oi I'fc I d a d nSv Is $ii. d d o d d d d Ci n 1i*k f?{ !1 N <M S N fc f- i 1 it,ift.$1 It I 1 i 1 1 i 1 111! If >wj .?!CD II h 51 i< * gH I uIs1 !! 1 $ It :t?! S.1S1Ii 1M! .I?I^* 11 itts 1tl?lf Iill .4 .5 < ''J *> n .5 o Oi V Oi v sv; * v: '*- o a * Nv * SJi >4i Fig. 3. Different Arrangements of Radiators in Enclosures balanced by the greater effectiveness of the heating. The heating effect for the enclosures shown in Fig. 3 follows: v Case 1 is 10 per cent more effective than a direct radiator when properly constructed. Case 2 is 5 per cent more effective than a direct radiator when property constructed. Case 3 is equally as effective as a direct radiator when properly constructed.' Case 4, with E equal to one-half A,--percentage of reduction is 10 per cent. Case 4, with E equal to A,--percentage of reduction is 20 per cent. Case 4, with E equal to 1 l/zA,--percentage of reduction is 35 per cent. * 11If, Ml d'd d <5 d *$ V \ d *d Ci d d d d d sQ % <5 Ci Case 5, with E equal to A,--percentage of reduction is 30 per cent. Case 6, percentage of reduction is 5 per cent. This data applies to the use of cast iron column radiation, with en closures built-in as part of the architectural treatment of the room and ik- does not apply to other types of enclosed radiators. II11 o 5K. Ot s ?!. ,3t 77 76