A proposed design of the steam laboratory for the greater Armour Institute of Technology . ximum cap-acity is one hundred times greater than the rainuraumat the same speed, i-his large range of capacity isof particular advantage in that one prime mover &ndmay be tested by the same dynamometer at many dif-ferent spee-s. Compared with the total power capac-ity of anj size dynamometer the inertia of the ro-tar is very slight, anil there is therefore no dan-ger of wrecking any part of the prime mover shouldits operation be suddenly shut down v/hile connectedto the dynamometer. During operation the
A proposed design of the steam laboratory for the greater Armour Institute of Technology . ximum cap-acity is one hundred times greater than the rainuraumat the same speed, i-his large range of capacity isof particular advantage in that one prime mover &ndmay be tested by the same dynamometer at many dif-ferent spee-s. Compared with the total power capac-ity of anj size dynamometer the inertia of the ro-tar is very slight, anil there is therefore no dan-ger of wrecking any part of the prime mover shouldits operation be suddenly shut down v/hile connectedto the dynamometer. During operation the dyntimomet ..rproduces no noise, and this advantage of silent op-eration is obvious when the importtmce of beiiog ableto hear usual noises in the prime mover on test isconsidered. The load transmitted to the Froude dyn-amometer can be altered v/henever desired withoutshutting do\-fli, and the process of shutting dovm canbe accomplished quickly v/ithout attention being giv-en to the dynamometer in any waj. Due to the lackof necessity of giving anything more than cursory .62. txrris. attention to the ITroude dynamometer while it isin operation, this machine is particularly suit-able for service in connection with long non-stoptests at either full or partial loads. 3till an-other advantage of importance is the fact thattheFroude d^-naraometer im^ooses a pure re-sistance to the priiae mover on test and tliereforesubjects the engine bearings to no resistance frrwhich they are not designed. These several ad-vantages of the iroude dynamometer talcen togetherwith the many others which it possesses rendersit operation a natter of siich extreme sijaplicity,perfect accuracy, and absolute reliability as tomake it very desirable in the laboratory. SPEAGUE ELECT:.IC ABrfORPT lOH DYNAHOIIETIlH . THe electrical dynamometer is a very con-venient type to use and consists of an electricgenerator directly coupled to the ;^:haft of theprime mover to be tested. It rei^uires no measiir-ing i
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Keywords: ., bookcentury1900, bookdecade1920, bookidproposeddesi, bookyear1921
