. Bulletin. Agriculture -- New Hampshire. May, 1929] SIMPLIFIED TECHNIQUE FOR MEASURING ENERGY 15 windchest and forces it in turn through the driers, absorbers for CO2, and meters, all of which are connected in series. The air not passed through the absorbers leaves the windchest through a free opening on top and is carried off through a room ventilating hood above the table. The object of using only a fractional part of the total ventilating current is to reduce the size of the absorbers so that they may be conveniently handled. Figure 5—Schematic outline of apparatus for ventilating respirat
. Bulletin. Agriculture -- New Hampshire. May, 1929] SIMPLIFIED TECHNIQUE FOR MEASURING ENERGY 15 windchest and forces it in turn through the driers, absorbers for CO2, and meters, all of which are connected in series. The air not passed through the absorbers leaves the windchest through a free opening on top and is carried off through a room ventilating hood above the table. The object of using only a fractional part of the total ventilating current is to reduce the size of the absorbers so that they may be conveniently handled. Figure 5—Schematic outline of apparatus for ventilating respiration chamber and for analy- sis of aliqtiot sample of air coming from chamber C, respiration chamber; B, blower for removal of air from chamber; c, cover in water seal of blower container; W, windchest; d, opening for free discharge of air into labora- tory room; s, can with rubber cap expansion top attached to circuit breaker r, which actuates magnetic bypass e thus automatically maintaining control of aUquot air sample from windchest W; b, hand-controUed bypass to aUquot air sample; P, manometer to indicate the air pressure in sampling can; Gi, sulphuric acid to remove moisture from air stream; E, airpump; G2 serves as check to Gi to indicate approach of saturation; \i and \-2, valves to deflect air stream from one set of carbon dioxide absorbers (Si and So) to the other (Li and L2); Ai and A2, sulphuric acid to retain moisture absorbed from soda lime in Si and S2; Di and D2, sulphuric acid to retain moisture absorbed from Li and L2; Pi and P2 petcocks to tap air stream for sampling; t, barium hydroxide to test air stream for loss of carbon dioxide; K, sodium bicarbonate to absorb fumes; Mi and M2, meters. and, secondarily, to economize on absorbent materials and on labor. The size of the aliquot relative to total ventilation may be varied from 4 to 50 per cent by altering the size of the free opening for waste. The principle of the aliquoting mechanism has been repeatedly d
Size: 1815px × 1376px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthornewhampshireagricultu, bookcentury1900, bookdecade1920
