Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . COMMISSION 163 It must be borne in mind throughout this discussion that objec-tions raised against apparatus on an experimental scale might ceaseto be such in large installations. The demands of the experimentchamber are extreme, there being occasions where such factors asmoving air, noise and temperature fluctuations are undesirable. Inpractice all of these limitations would not exist. Of primary impor-tance in this work is the production of the air condition method of producing the conditio
Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . COMMISSION 163 It must be borne in mind throughout this discussion that objec-tions raised against apparatus on an experimental scale might ceaseto be such in large installations. The demands of the experimentchamber are extreme, there being occasions where such factors asmoving air, noise and temperature fluctuations are undesirable. Inpractice all of these limitations would not exist. Of primary impor-tance in this work is the production of the air condition method of producing the condition is of secondaryconsideration. The control of temperature has therefore been obtained in thisexperimental work by balancing excesses. To produce 68 degreesand 50 per cent, relative humidity under a stagnant condition actu-ally requires but a small amount of cooling to neutralize the heatgiven oft by the subjects and electric lights in the room. In factthe amount of cooling to take care of two to four people is so slightthat the refrigerating plant need only be operated intermittently. Fig. 0 Chart from Recording Isyi-hrouicter showing Teiuiierature Fluctuations from 2 to 0 P. M. IW EXPERIMENTAL LABORATORY OF NEW YORK STATE COMMISSION at its lowest output. This intermittent operation, however, causestemperature fluctuations and requires undue attention in startingand stopping the compressors. (See Fig. 6.) It is much simplerto operate the compressor continuously at a low output and neu-tralize the excess cold with the heaters. This, in short, is the methodthat has been found most successful in our work. In producing a stagnant condition the three factors, refrigeration,heat and moisture, are worked against each other by hand has not appeared at all feasible to manage this problem auto-matically because of the number of independent variables may be listed as follows: 1. Refrigeration—lowering temperature and removing moistureby condensation. 2. Heat
Size: 1581px × 1581px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidtransactions, bookyear1895
