GB645252A - Improvements in and relating to means for the detection and quantitative determination of combustible gas or vapour in an atmosphere - Google Patents

Improvements in and relating to means for the detection and quantitative determination of combustible gas or vapour in an atmosphere

Info

Publication number
GB645252A
GB645252A GB1226746A GB1226746A GB645252A GB 645252 A GB645252 A GB 645252A GB 1226746 A GB1226746 A GB 1226746A GB 1226746 A GB1226746 A GB 1226746A GB 645252 A GB645252 A GB 645252A
Authority
GB
United Kingdom
Prior art keywords
inactive
atmosphere
materials
oxide
flue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1226746A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEORGE MALECKI
Original Assignee
GEORGE MALECKI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEORGE MALECKI filed Critical GEORGE MALECKI
Priority to GB1226746A priority Critical patent/GB645252A/en
Publication of GB645252A publication Critical patent/GB645252A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
    • G01N25/44—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the heat developed being transferred to a fixed quantity of fluid
    • G01N25/46—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the heat developed being transferred to a fixed quantity of fluid for investigating the composition of gas mixtures

Abstract

<PICT:0645252/III/1> Means for detecting a combustible gas in an oxygen-containing atmosphere comprises a differential thermometer for measuring the heat generated by burning said gas in said atmosphere by a catalytic agent having two separate conduits whereby the atmosphere is divided into two substantially identical streams, one conduit containing one part of the differential thermometer embedded in the catalytic material whilst the other conduit contains the other part of the differential thermometer embedded in inactive material, the specific heat and heat conductivity of both materials being substantially the same. In the construction shown, a U-tube 8, 9 is held in a flue 19 by diaphragms 27, a partition 20 dividing the flue into two equal portions. A spirally-grooved wall 21 receives liquid from a boiler 23, and the presence of the grooves ensures that the flue, and thereby the active, 18, and inactive, 17, materials, is uniformly heated. A condenser 26 is provided. An electric circuit is completed when the mercury rises to a predetermined value in the limb 8 and an alarm bell is rung. This limb has a chart giving a direct reading of the amount of combustible gas present. In each case the inactive and active materials must offer the same resistance to air, and have similar heat conductances and specific heats. In a modification, a thermo-couple is used and a further modification utilizes a mercury bulb thermometer packed in the catalyst-no inactive component being present. A further modification, designed to operate at room temperatures (Fig. 1, not shown) has an inlet divided into two similar conduits-the active material being in one, and the inactive in the other-and the atmosphere may be drawn through the apparatus by a pump. Active materials specified are a mixture of manganese dioxide, copper oxide and silver oxide, a mixture of iodine pentoxide and sulphuric acid on a porous carrier, cupric oxide, silver oxide or cobaltic oxide; whilst inactive materials are a mixture of manganese dioxide and copper oxide, sulphuric acid in a carrier, magnesium silicates or alumina.
GB1226746A 1946-04-23 1946-04-23 Improvements in and relating to means for the detection and quantitative determination of combustible gas or vapour in an atmosphere Expired GB645252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1226746A GB645252A (en) 1946-04-23 1946-04-23 Improvements in and relating to means for the detection and quantitative determination of combustible gas or vapour in an atmosphere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1226746A GB645252A (en) 1946-04-23 1946-04-23 Improvements in and relating to means for the detection and quantitative determination of combustible gas or vapour in an atmosphere

Publications (1)

Publication Number Publication Date
GB645252A true GB645252A (en) 1950-10-25

Family

ID=10001409

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1226746A Expired GB645252A (en) 1946-04-23 1946-04-23 Improvements in and relating to means for the detection and quantitative determination of combustible gas or vapour in an atmosphere

Country Status (1)

Country Link
GB (1) GB645252A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743167A (en) * 1950-10-10 1956-04-24 Robert H Cherry Instrument for measuring carbon monoxide in oxygen bearing atmosphere
US2781249A (en) * 1953-05-18 1957-02-12 Pisano Martin Combustible gas detector
CN104122291A (en) * 2014-07-22 2014-10-29 上海交通大学 Method for identifying rate of heat transfer from water-cooled wall to working medium of ultra-supercritical thermal power generating unit in real time
CN110455856A (en) * 2019-07-30 2019-11-15 中国特种设备检测研究院 A kind of supersaturation flue gas condenser thermal property measuring system and its measurement method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743167A (en) * 1950-10-10 1956-04-24 Robert H Cherry Instrument for measuring carbon monoxide in oxygen bearing atmosphere
US2781249A (en) * 1953-05-18 1957-02-12 Pisano Martin Combustible gas detector
CN104122291A (en) * 2014-07-22 2014-10-29 上海交通大学 Method for identifying rate of heat transfer from water-cooled wall to working medium of ultra-supercritical thermal power generating unit in real time
CN104122291B (en) * 2014-07-22 2016-06-01 上海交通大学 Ultra supercritical coal-fired unit water wall is to the real-time discrimination method of refrigerant heat transfer speed
CN110455856A (en) * 2019-07-30 2019-11-15 中国特种设备检测研究院 A kind of supersaturation flue gas condenser thermal property measuring system and its measurement method
CN110455856B (en) * 2019-07-30 2021-11-23 中国特种设备检测研究院 Supersaturated flue gas condenser thermal performance measuring system and measuring method thereof

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