q= 0.42 x 10 m /Ah generated hydrogen s= 5, general general safety safety factor factor n= Number Number of of cells cells Igas= Current producing gas in mA per Ah rated ca pacity for the the float charge current I float or the boost charge current I boost (= Iboost x f g x f s mA/Ah) o
Crt= Capac Capacit ity y C10 for lead acid cells (Ah), U f =1.8 V/cell at 20 C o
or capacity C 5 for NiCd cells (Ah), U f =1.0 V/cell at 20 C
Batteries for Solar System Battery Type:- Lead Acid No. of Battery = 1 Nos. of Cells for each Battery= Battery Rated Capacity = Iboost =
1 08 800 Ah
8 mA/Ah (according (according to Table-1 Table-1 in BS EN 50272-2:2001) 50272-2:2001)
f g =
0.2 0.2
(acc (accor ordi ding ng to Tabl Tablee-1 1 in in BS BS EN EN 502 50272 72-2 -2:2 :200 001) 1)
f s =
5
(acc (acco ordin rding g to to Tab Table le--1 in in BS BS EN EN 502 50272 72-2 -2:2 :200 001) 1)
Igas =
8 x 0. 2 x 5 =
8 mA/Ah -3
99 x 0.42 x 10 x 5 x 108 x 8 x 800 x 10
Minimum Ventilation Air Flow = = =
-3
3
143.70 m /hr 84.58 cfm
Batteries for CCR DC System Battery Type:- Lead Acid No. of Battery = 1 Nos. of Cells for each Battery= Battery Rated Capacity = Iboost =
1 08 1800 Ah
8 mA/Ah (according (according to Table-1 Table-1 in BS EN 50272-2:2001) 50272-2:2001)
f g =
0.2 0.2
(acc (accor ordi ding ng to Tabl Tablee-1 1 in in BS BS EN EN 502 50272 72-2 -2:2 :200 001) 1)
f s =
5
(acc (acco ordin rding g to to Tab Table le--1 in in BS BS EN EN 502 50272 72-2 -2:2 :200 001) 1)
