Document g2VQM3RX4XdpkMaegk46qaa4G

plnnK __ __ Ppuirr CnyinCOt's job will gtOV/ OS mechanization continues in air-conditioncd sound' conditioned plants. Lighting engineers see lower windows--"black areas by night and blight spots by day ... a stumbling block to uniform controlled light* ing " Reduced window space will cut initial costs, healing and air-conditioning leases. Nohow seeing Strips will give workers psychological carn/ufJ. marhines-^___ Shift toward automation v/ill throw spotlight on electrical control with simpler compo nents. Voltages will continue their upward climb, paced by bolter insulations and mechanical designs. Equipment size will shrink or. temperatures use. Higher Irequcncies. smaller components (example: transistors), better insulations will also contribute. March of packaged equipment will go on - in spite ol some who led optimum has been readied. More dollar savings will cotnc horn cutting Held labor, Plastic electrical conduit will make its debut, prom ising no bending and threading, plus light weight. Aluminum installations will crow as engineers learn to design and install the light metal as a system, rather than spollily as a copper substitute. Motor designers wilt pinpoint frame sizes for a smaller hprange rather than extend mulii-lrcnne prac- * lice. With wider adoption ol 277 v, power engineers are wondering about pressing (or 277-v single-phase motors lor small applications - water coolers. Ians. operation .... Electrical maintenance men will need better savvy. Smart power engineers will seek out technical men rather than `conduit benders." In-plant training courses lor electricians will grow. Keen manufacturers will *crid with better manuals and streamlined drawings ior quick trouble-shooting. a ipcciol report -- Octobor 1953 -- tir'f DATA SHEET. . iU | Mea 1 lot*, Btu per eq t1 per hr TL4r "? '* "?? H*ot 1e*Y C > ew per tQ tl p*r year (esnitnaoui opiroiion ) oXs'V It || | I I t t-H 41 h I | I I I I t III HI 'Ult-H tST 2.00 91.50 , < Annual coil of hoot b*, % per tq It ' f.Cost of Heat Loss--insulated Vessels Thu hcat-LOM cjiafh help* determine economic thlekneaa ol ; mineral-wool blanket insulation by giving the approilmato annual f f0Jt of heat tots (dollan per aq (0 for iclecicd insulation thick* ttuti (in.) at specified hot-surface temperatures (deg F) and at `tecifie fuel cotu per million Bin (dollar*), ticampfet To compare heat-lou coat for 1-, 2(4- and 3-fa. thick- tuea o( mineral-wool blanket inaulaiton on a steam-heated tank :.k operating continuously at 660 F, the three values of heal lost per year (million Btu per q ft) are first found (dotted ` lines) on vertieat center Kale. With ta assumed .fuel coat per milltan Btu of 10.40, annual heat-lou costa per tq ft uro $040'(1 in.), $0.36 12% in.), and $043 13 In.). Selection of .either 2ft or 3 in. (1 in. ia clearly too little here) i> governed by relative inetallation coal (materials and labor) of the two thickneaies and the anticipated useful Ufa of the tank. industrial Mineral Fiber Institute, lae, New York, N. Y. i O rowtt \ OCIOSffi 1953 iNOlNEEftlNO ANO MANAGEMENT SECTION 123 SIlf ! |[i ] [h I',