Identifier: industrialgasca191436waid (find matches)
Title: Industrial gas calorimetry.
Year: 1914 (1910s)
Authors: Waidner, C.W. Mueller, E.F.
Subjects:
Publisher: National Bureau of Standards
Contributing Library: NIST Research Library
Digitizing Sponsor: NIST Research Library

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, 30inches) to find the observed heating value as defined on page 14.The volume of gas burned being equal to the volume of waterheated, it is not necessary to measure these volumes independ-ently; so that the use of the gas meter and the weighing of thewater, necessary with the usual type of flow calorimeter, is dis-pensed with. A calorimeter operating on this principle wouldseem to be adapted for use as a recording calorimeter, as it auto-matically maintains a constant ratio of volume of gas to volumeof water; so that only changes in the heating value or in the tem- 25 The calorimeter No. 16 was kindly loaned for this investigation by the Improved Equipment Co. 26 Inasmuch as the water is measured volumetrically, the heat capacity of a cubic foot of water forvarious outlet-water temperatures may be found, without sensible error, by multiplying the weight of acubic foot of water at 6o° F, viz, 62.4 pounds, by the appropriate factor taken from Table 22, p. 91. Technologic Paper No. 36
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Fig. 34.—Doherty calorimeter Industrial Gas Calorimetry 133 perature or in the pressure of the gas produce changes in thetemperature rise of the water flowing through the calorimeter.Arrangements would have to be made for automatically refillingthe tank with gas, and if only one tank were used the recordwould be discontinuous. In a recording instrument the two ther-mometers would of course be replaced by a differential mechanicalor electrical thermometric device combined with a suitablerecorder. The calorimeter is shown in Fig. 34. The internal connectionsare too complicated to be shown clearly in a single sectionaldrawing. For details of construction the reader is referred to thepatent specifications, United States Letters Patent No. 828306.The essential principles of construction are shown in the diagram-matic sketch, Fig. 35. The water flows through the calorimeterunder a pressure determined by the difference in level betweenthe inlet wier A and the outlet wier B. The rate of flo

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