Read e-book online Atmospheric Pollution. Its History, Origins and Prevention PDF

By A. R. Meetham

ISBN-10: 008024002X

ISBN-13: 9780080240022

ISBN-10: 0080240038

ISBN-13: 9780080240039

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Table 13 shows an example of how the world consumption of energy has changed since 1929, all values expressed in million tonnes of coal equivalent. TABLE 13. World consumption of energy (million tonnes of coal equvivaient ) Solid fuels Liquid fuels Natural and imported gas Hydro and imported electricity Uranium 1929 1937 1949 1958 367 255 76 14 - 1361 1482 328 115 22 - 557 239 38 - 1983 1136 505 75 - 1975 2500 4000 1700 540 570 The figures in Table 13 include energy used for heating and other purposes besides power.

A further specialized development has been the introduction of the impulse injection system for firing continuous-chamber brick kilns. With this system a metered quantity of oil is injected at controlled intervals into the kiln from injectors arranged along the top or side of the chamber being fired. The equipment is made to be portable so that it can be moved from chamber to chamber as required. Injection is the in form of a "slub" of oil and no attempt is made to atomize it, the oil breaking up when it impinges upon a "striking point" located inside the combustion zone.

They are smokeless, ashless, and can be made sulphur-free;, they have all the virtues of being "on tap"; and they can be used in very efficient appliances, internal combustion engines as well as furnaces. It is not surprising that, along with electricity, gas has revolutionized cooking methods, domestic hot-water supply* and domestic heating. About 25 per cent of the calorific value of good gas coal was recovered in the form of gas, 50 per cent in the form of coke, and 7 per cent as tar and other by-products.

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Atmospheric Pollution. Its History, Origins and Prevention by A. R. Meetham


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