This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 Excerpt: ...is made and fewer factors are considered. The simplest test takes into consideration only the weight of the water apparently evaporated and the weight of the fuel supplied to the furnace. In between come the happy mediums which are elaborate enough to insure reasonable accuracy and simple enough to avoid expensive ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 Excerpt: ...is made and fewer factors are considered. The simplest test takes into consideration only the weight of the water apparently evaporated and the weight of the fuel supplied to the furnace. In between come the happy mediums which are elaborate enough to insure reasonable accuracy and simple enough to avoid expensive complications and justifiably dispensable effort. Such a one will be herein outlined. It may be further simplified on the judgment of the man who is conducting the test. All the principles involved and all the calculations entering into the making and reporting of this test have been taken up in detail in previous lectures and it only remains for the writer to show how they all are brought into application when conducting a test. Test Apparatus Required The following apparatus is required for properly making a test as here outlined: 1. Equipment for measuring or weighing water evaporated. 2. Equipment for measuring or weighing fuel. 3. Two draft gages; one at damper, one at furnace. 4. Four thermometers; one for feed water, one for steam calorimeter, one for flue gases and one for air. 5. One complete flue-gas analyzing set. 6. One steam calorimeter. 7. One outfit for making proximate fuel analyses. Weighing Feed Water As probably has been assumed from foregoing paragraphs, one of the main factors to be determined is the weight of water evaporated or steam generated during the test. This factor can be ascertained in two ways. First, the water can be measured or weighed before it is fed to the boiler or, second, the steam given off by the boiler can be collected, condensed and measured or weighed. The latter method is, perhaps, the more reliable because only water that has been condensed from steam will be weighed while with the first method all th...
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