DE584902C - Heat meter, especially for central heating radiators - Google Patents

Heat meter, especially for central heating radiators

Info

Publication number
DE584902C
DE584902C DEO17729D DEO0017729D DE584902C DE 584902 C DE584902 C DE 584902C DE O17729 D DEO17729 D DE O17729D DE O0017729 D DEO0017729 D DE O0017729D DE 584902 C DE584902 C DE 584902C
Authority
DE
Germany
Prior art keywords
central heating
heat meter
heating radiators
temperature
temperature difference
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
DEO17729D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE584902C publication Critical patent/DE584902C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00Measuring quantity of heat
    • G01K17/06Measuring 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
    • G01K17/08Measuring 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Description

Wärmemengenmesser, insbesondere für Heizkörper von Zentralheizungen Die Erfindung bezieht sich auf Wärmemengenmesser; sie bezweckt, die bei diesen Geräten nötige Temperaturunterschiedsmessung derart auszuführen, daß ihre Resultate nicht nur, wie bei den bis jetzt bekannten Messern dieser Art, von den jeweils vorhandenen Temperaturunterschieden zwischen der Heizkörperoberfläche und der Raumluft, sondern zugleich von einem anderen wesentlichen Verhältnis, und zwar von der für lleizkörper bei steigendem Temperaturunterschied gegenüber der umgebenden Luft charakteristischen, mitunter bis io bis 15°1o betragenden Steigerung ihres Wirkungsgrades (Steigerung des Wärmeübergangskoeffizienten K) abhängig gemacht werden. Durch Mitberücksichtigung dieser Wirkungsgradsteigerung wird das Meßergebnis ein wesentlich genaueres Maß für den tatsächlichen Wärmeverbrauch.Heat quantity meters, in particular for central heating radiators The invention relates to calorimeters; it aims at those devices to carry out the necessary temperature difference measurement in such a way that their results do not only, as with the knives of this type known up to now, from the existing ones Temperature differences between the radiator surface and the room air, rather at the same time from another essential relationship, namely that of corporations characteristic with increasing temperature difference compared to the surrounding air, sometimes up to 10 to 15 ° 1o increase in their efficiency (increase of the heat transfer coefficient K) can be made dependent. By taking into account this increase in efficiency, the measurement result is a much more accurate measure for the actual heat consumption.

Die Erfindung besteht darin, daß in Reihe mit dem Temperaturdifferenzmeߧerät oder parallel zu ihm ein besonderer, an der Heizmittelzuleitung angeordneter, temperaturabhängiger Widerstand in den Meßkreis eingeschaltet ist. Durch die richtige Bemessung dieses temperaturabhängigen Zusatzwiderstandes und die Wahl eines Materials für ihn mit geignetem Temperaturkoeffizienten seines elektrischen Widerstandes wird erreicht, daß die Veränderung des Wirkungsgrades in dein Meßergebnis mitberücksichtigt wird.The invention consists in that in series with the Temperaturdifferenzmeßerät or parallel to it a special, temperature-dependent one arranged on the heating medium supply line Resistance is switched on in the measuring circuit. By properly dimensioning this temperature-dependent additional resistance and the choice of a material for him with suitable temperature coefficient of its electrical resistance is achieved, that the change in efficiency is taken into account in your measurement result.

Die Schaltung nach der Erfindung ist schematisch in den Abb. i bis q. dargestellt. Nach Abb, i und 3 werden in bekannter Weise als wärmeaufnehmende Glieder ein oder mehrere Thermoelemente 6 benützt, deren warme Lötstellen an der Zuleitungsröhre oder einem sonstigen Teil des Heizkörpers 7 angebracht sind und deren kalte Lötstellen im Luftraum liegen. Beim Betrieb der Heizanlage erzeugen sie einen Strom in einem Leitungskreis 8, der den normalen Widerstand i i der Anlage und das Meßgerät 9 enthält.The circuit according to the invention is shown schematically in Figs q. shown. According to Fig, i and 3 are in a known manner as heat-absorbing Members one or more thermocouples 6 used, the warm solder joints on the Supply pipe or any other part of the radiator 7 are attached and whose cold solder joints are in the air space. Generate when operating the heating system they generate a current in a line circuit 8, which has the normal resistance i i of the system and the measuring device 9 contains.

Nach Abb. i ist nun erfindungsgemäß parallel zu dem Meßgerät 9 ein an der Heizmittelzuleitung angebrachter Widerstand io von solchem positivem Temperaturkoeffizienten und solcher Größe im Verhältnis zu den Widerständen. i i und 12 der Anlage bzw. des Meßgerätes 9 geschaltet, daß der das Meßgerät 9 passierende Strom bei steigender Temperatur des Heizkörpers 7 im gleichen Maße wie der Wirkungsgrad des Heizkörpers verstärkt wird. Der Widerstand io kann z. B. aus Kupfer, Eisen oder Nickel bestehen.According to FIG. I, according to the invention, a is now parallel to the measuring device 9 Resistance io attached to the heating medium supply line with such a positive temperature coefficient and such size in relation to the resistances. i i and 12 of the system or of the measuring device 9 switched that the current passing through the measuring device 9 with increasing Temperature of the radiator 7 to the same extent as the efficiency of the radiator is reinforced. The resistance io can, for. B. made of copper, iron or nickel.

In Abb. 3 ist der Widerstand in Serie mit dem Messer g geschaltet; er ist in diesem Falle ein Widerstand 2o mit negativem Temperaturkoeffizienten, z. B. Kohle oder eine Flüssigkeit.In Fig. 3 the resistor is connected in series with knife g; in this case it is a resistor 2o with a negative temperature coefficient, z. B. coal or a liquid.

Bei den in Abb. 2 und q. veranschaulichten Ausführungsformen dienen als elektrische Thermometer Widerstände, die als Zweige einer Brückenschaltung an eine Stromquelle 1q. über die Leitungen 8 angeschaltet sind. Mit Bezug auf die Schaltung der Widerstände io bzw. 2o entsprechen die Abb. 2 und q. den Abb. i bzw. 3.With the in Fig. 2 and q. illustrated embodiments serve as electrical thermometer resistors that act as branches of a bridge circuit a power source 1q. are switched on via the lines 8. With reference to the circuit the resistances io and 2o correspond to Figs. 2 and q. Fig. i and 3.

Claims (1)

PATENTANSPRUCH: Wärmemengenmesser, insbesondere für Heizkörper von Zentralheizungen, beruhend auf der Messung der Temperaturdifferenz zwischen der Heizkörperoberfläche und der Luft mit elektrischen Thermometern, dadurch gekennzeichnet, daß in Reihe mit dein Temperaturdifferenzmeßgerät oder parallel zu ihm ein besonderer, an der Heizmittelzuleitung angeordneter, temperaturabhängiger Widerstand (1o, 20) in den Meßstromkreis eingeschaltet ist.PATENT CLAIM: Heat meter, especially for radiators from Central heating based on the measurement of the temperature difference between the Radiator surface and the air with electrical thermometers, characterized that in series with your temperature difference measuring device or parallel to it a special, temperature-dependent resistor (1o, 20) arranged on the heating medium supply line is switched on in the measuring circuit.
DEO17729D 1928-08-22 1928-11-14 Heat meter, especially for central heating radiators Expired DE584902C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK41653T 1928-08-22

Publications (1)

Publication Number Publication Date
DE584902C true DE584902C (en) 1933-09-26

Family

ID=8130885

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO17729D Expired DE584902C (en) 1928-08-22 1928-11-14 Heat meter, especially for central heating radiators

Country Status (3)

Country Link
DE (1) DE584902C (en)
DK (1) DK41653C (en)
FR (1) FR680636A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278137B (en) * 1964-02-05 1968-09-19 Siemens Ag Measuring circuit for heat output meter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567755A (en) * 1943-05-17 1951-09-11 Landis & Gyr Ag Temperature responsive system
US2567756A (en) * 1944-04-28 1951-09-11 Landis & Gyr Ag Temperature responsive system
US2865202A (en) * 1954-04-23 1958-12-23 Gulton Ind Inc Device for measuring and detecting thermal energy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1278137B (en) * 1964-02-05 1968-09-19 Siemens Ag Measuring circuit for heat output meter

Also Published As

Publication number Publication date
DK41653C (en) 1930-02-17
FR680636A (en) 1930-05-02

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