Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 306
We,3ht ft/fa O- frank P - fiaddies£ V-Jtabc/va*y Vantf r~££e*mom etc* -z j - f - i - 1-I fir* Fig. 102 will give the number of foot pounds of work done. Thus,77.8 poundsXIO feet=778 foot pounds. The heat unit or British thermal unit (B. T. U.) is thequantity of heat required to raise the…
