Transactions of the American Society of Heating and Ventilating Engineers Volume N . 25

Transactions of the American Society of Heating and Ventilating Engineers Volume N . 25

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ... of coal to knit together and form a hard metallic cake in the coking process, while coke made from other coal of practically the same analysis has little or no crushing strength. The structure of coke is variable, some is so light in weight that there is considerable stack loss as compared with anthracite coal. of Eastern Pennsylvania Chapter The work of the above Committee which has aroused interest throughout the Society, was reported at the Annual Meeting of 1919. In submitting this preliminary report, however, it has been deemed advisable by the Weather Bureau Committee, in view of the unusual character of this work, to place on record a statement, setting forth the events, which finally terminated in the formation of this Committee in 1917, and an explanation of its object. BOUT six or seven years ago during the earlier stages in the develop ment of spray type humidifiers and dehumidifiers for use in con nection with humidifying, cooling or low temperature drying plants, those engaged in this field would receive inquiries from manufacturers requesting estimates for air conditioning plants including refrigerating apparatus for maintaining say, for instance, 70 deg. and 60 per cent. relative humidity, and in many cases stipulating that we figure on taking the air from outdoors entirely or partly at a maximum condition of say 95 deg. and 90 per cent relative humidity or even higher, this maximum condition being based on the daily weather reports as issued by the local weather forecasters in different parts of the country. During this period it was a custom of the weather forecasters to issue to the daily papers temperature readings taken at 8 A. M., 2 P. M. and 8 P. M. and relative humidity readings at 8 A. M., and 8 P. M., but more

Product details

  • Paperback
  • 189 x 246 x 9mm | 299g
  • United States
  • English
  • black & white illustrations
  • 1236777735
  • 9781236777737