FR2295409A1 - Measurement of heat used in central heating system - uses two thermocouple junctions powering voltmeter eliminating power supplies - Google Patents

Measurement of heat used in central heating system - uses two thermocouple junctions powering voltmeter eliminating power supplies

Info

Publication number
FR2295409A1
FR2295409A1 FR7442070A FR7442070A FR2295409A1 FR 2295409 A1 FR2295409 A1 FR 2295409A1 FR 7442070 A FR7442070 A FR 7442070A FR 7442070 A FR7442070 A FR 7442070A FR 2295409 A1 FR2295409 A1 FR 2295409A1
Authority
FR
France
Prior art keywords
voltmeter
heating system
central heating
heat used
measurement
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.)
Withdrawn
Application number
FR7442070A
Other languages
French (fr)
Inventor
Pierre Leger
Marcel Simonin
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR7442070A priority Critical patent/FR2295409A1/en
Publication of FR2295409A1 publication Critical patent/FR2295409A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
    • G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
    • G01K17/10—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval
    • G01K17/12—Indicating product of flow and temperature difference directly or temperature
    • G01K17/18—Indicating product of flow and temperature difference directly or temperature using electrical or magnetic means for one measurement and mechanical means for the other

Abstract

Measurement of heat used in a hot water central heating system employs a thermocouple with one junction attached to the inlet and one junction attached to the outlet. The junctions power a voltmeter giving temperature difference thus eliminating the need for mains or battery power supplies. One thermocouple junction (4) is attached to the hot water pipe (1) of a central heating system and a second junction (5) is attached to the return flow pipe (2). The junctions are connected to a voltmeter (10) measuring temperature difference. Water flow is measured by a flowmeter (D) driving a cam (11) with a spar (12) which causes a second cam (14) with steps (15) to but against the voltmeter pointer (19). During descent the second cam operates a ratchet (21) on a counter (22) giving heat used.
FR7442070A 1974-12-19 1974-12-19 Measurement of heat used in central heating system - uses two thermocouple junctions powering voltmeter eliminating power supplies Withdrawn FR2295409A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7442070A FR2295409A1 (en) 1974-12-19 1974-12-19 Measurement of heat used in central heating system - uses two thermocouple junctions powering voltmeter eliminating power supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7442070A FR2295409A1 (en) 1974-12-19 1974-12-19 Measurement of heat used in central heating system - uses two thermocouple junctions powering voltmeter eliminating power supplies

Publications (1)

Publication Number Publication Date
FR2295409A1 true FR2295409A1 (en) 1976-07-16

Family

ID=9146406

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7442070A Withdrawn FR2295409A1 (en) 1974-12-19 1974-12-19 Measurement of heat used in central heating system - uses two thermocouple junctions powering voltmeter eliminating power supplies

Country Status (1)

Country Link
FR (1) FR2295409A1 (en)

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