DE19602973A1 - Heat energy measurement device for solar energy hot water storage tank - Google Patents

Heat energy measurement device for solar energy hot water storage tank

Info

Publication number
DE19602973A1
DE19602973A1 DE19602973A DE19602973A DE19602973A1 DE 19602973 A1 DE19602973 A1 DE 19602973A1 DE 19602973 A DE19602973 A DE 19602973A DE 19602973 A DE19602973 A DE 19602973A DE 19602973 A1 DE19602973 A1 DE 19602973A1
Authority
DE
Germany
Prior art keywords
sensor
tank
storage tank
heat energy
hot water
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Withdrawn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
DE19602973A
Other languages
German (de)
Inventor
Rolf Schneider
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
Priority to DE19602973A priority Critical patent/DE19602973A1/en
Publication of DE19602973A1 publication Critical patent/DE19602973A1/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Withdrawn legal-status Critical Current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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
    • G01K3/06—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The device (3) involves a heat storage tank (1) which has a sensor (2) arranged parallel to its longitudinal axis which integrates the temperature over the tank height. An alternative arrangement uses a Z-shaped sensor along the outer surface of the tank. A resistance bridge (3) shows the electrical resistance of the measurement sensor (2) and this together with the volume of the tank can be converted to the heat energy contained in the tank, either as a reading in Joules or as a percentage of maximum value. The sensor is an electrically conducting wire such as copper which is in thermal, but not electrical, contact with the container wall. The resistance change is proportional to the temperature change of the container wall.

Description

Die Erfindung bezieht sich auf ein Energievorratsmeßgerät für den Gesamtwärme­ inhalt von Flüssigkeiten mit Temperaturschichtung in vertikal-zylindrischen Tanks. In Wärmespeichern, wie sie z. B. in solarthermischen Anlagen Verwendung finden, ist eine möglichst ungestörte Temperaturschichtung des Speichermediums innerhalb des Speichers erwünscht.The invention relates to an energy supply measuring device for the total heat Contents of liquids with temperature stratification in vertical-cylindrical tanks. In heat storage, as z. B. find use in solar thermal systems, is an undisturbed temperature stratification of the storage medium desired within the store.

Durch die Temperaturschichtung läßt sich jedoch der jeweilige Energievorrat im Speicher nicht mit einzelnen, punktuellen Temperaturmeßstellen an der Speicherwandung feststellen.Through the temperature stratification, however, the respective energy supply in the Do not store individual, selective temperature measuring points on the Determine storage wall.

Eine genaue Information über den Energievorrat ist aber für eine optimale Nutzung der solarthermischen Anlage unerläßlich.Precise information about the energy supply is, however, for optimal use essential for the solar thermal system.

Der Gesamtwärmeinhalt eines Wärmespeichers (Fig. 1, 2 Nr. 1) ist das Produkt aus Speichervolumen und Temperatur. Bei zylindrischen Speichern ist das Volumen eine Funktion der Speicherhöhe. Bei unterschiedlichen Temperaturen in den einzelnen Speicherschichten ist der Wärmeinhalt eine Funktion des Integrals der Temperatur über die Speicherhöhe.The total heat content of a heat store ( Fig. 1, 2 No. 1) is the product of the storage volume and temperature. For cylindrical cylinders, the volume is a function of the cylinder height. At different temperatures in the individual storage layers, the heat content is a function of the integral of the temperature over the storage height.

Dieser Wert ist annähernd äquivalent zum Integral der Speicherwandtemperatur entlang einer Geraden über die Höhe des zylindrischen Speicherteiles, welches wiederum äquivalent beispielsweise zum Widerstand eines Drahtmeßfühlers (Fig. 1, 2 Nr. 2) ist, welcher entlang dieser Linie in thermischem Kontakt zur Speicherwand verläuft.This value is approximately equivalent to the integral of the storage wall temperature along a straight line over the height of the cylindrical storage part, which in turn is equivalent, for example, to the resistance of a wire sensor ( Fig. 1, 2 No. 2) which runs along this line in thermal contact with the storage wall.

Daraus folgt, daß der elektrische Widerstand des Meßfühlers äquivalent ist zum Wärmeenergieinhalt des Speichers.It follows that the electrical resistance of the sensor is equivalent to Thermal energy content of the storage.

Um möglichst hohe Widerstandsänderungen im Meßfühler zu erzielen, ist das An­ bringen mehrerer, in Reihe geschalteter Meßfühler möglich, z. B. lackisolierter Kupferdraht mit 0,1 mm Durchmesser in 10 parallel angebrachten, in Reihe geschalteten Meßabschnitten (Fig. 1, 2 Nr. 2).In order to achieve the highest possible changes in resistance in the sensor, it is possible to bring several sensors connected in series, e.g. B. enamelled copper wire with 0.1 mm diameter in 10 parallel mounted, series connected measuring sections ( Fig. 1, 2 No. 2).

Die Anforderungen an den Meßfühler (hoher Temperaturkoeffizient des elektrischen Widerstandes, lineare Temperatur-Widerstands-Charakteristik im gewünschten Anwendungstemperaturbereich, elektrisch isolierte, aber thermisch leitende Verbindung zur Behälterwand) richten sich nach dem Anwendungsgebiet. Eine Widerstands-Meßbrücke (Fig. 1, 2 Nr. 3) mit Abgleichmöglichkeit für Nullpunkt und Maximalanzeige dient als Anzeigeinstrument und kann in % des maximalen Speicherenergieinhalts (Gesamtvolumen mit maximal zulässiger Speichertemperatur = 100%, Gesamtvolumen mit minimaler Speichertemperatur = 0%) oder unmittelbar in Energieeinheiten (Joule) geeicht werden. The requirements for the sensor (high temperature coefficient of electrical resistance, linear temperature-resistance characteristic in the desired application temperature range, electrically insulated but thermally conductive connection to the container wall) depend on the area of application. A resistance measuring bridge ( Fig. 1, 2 No. 3) with adjustment option for zero point and maximum display serves as a display instrument and can be used in% of the maximum storage energy content (total volume with maximum permissible storage temperature = 100%, total volume with minimum storage temperature = 0%) or immediately are calibrated in energy units (joules).

Ein solches Wärmeenergievorratsmeßgerät ist zu äußerst geringen Kosten herstellbar und kann auf zweierlei Art zur Energieeinsparung beitragen:Such a thermal energy meter is extremely low in cost producible and can contribute to energy saving in two ways:

  • 1. Die genaue Information über den Energievorrat erlaubt es dem Betreiber, seine Energieentnahme optimal dem vorhandenen Vorrat anzupassen. Bei solarther­ mischen Anlagen ist so eine bessere Ausnutzung der gespeicherten Sonnen­ energie möglich.1. The precise information about the energy supply allows the operator to Optimally adapt energy consumption to the existing stock. At solarther mixing systems is a better use of the stored sun energy possible.
  • 2. Die Einspeisung des gewonnenen Meßwertes in ein Regelgerät ermöglicht die Optimierung des Wärmeerzeugungsmanagements für eine Nachheizung des Solarspeichers.2. Feeding the measured value obtained into a control device enables Optimization of heat generation management for reheating the Solar storage.

Claims (3)

1. Wärmeenergievorratsmeßgerät für Wärmespeichertanks dadurch gekennzeichnet, daß ein Fühler integralmäßig die Temperatur über die Behälterhöhe mißt.1. Thermal energy measuring device for heat storage tanks, characterized in that a sensor integrally measures the temperature above the container height. 2. Wärmeenergievorratsmeßgerät nach Anspruch 1, dadurch gekennzeichnet, daß ein Fühler entlang der Außenwand des Speichertanks parallel zu dessen Längsachse angebracht ist.2. Heat energy measuring device according to claim 1, characterized, that a sensor along the outer wall of the storage tank parallel to it Longitudinal axis is attached. 3. Wärmeenergievorratsmeßgerät nach Anspruch 1, dadurch gekennzeichnet, daß ein Fühler wendelförmig um die Außenwand des Speichertanks angebracht ist.3. Thermal energy meter according to claim 1, characterized, that a sensor attached helically around the outer wall of the storage tank is.
DE19602973A 1996-01-27 1996-01-27 Heat energy measurement device for solar energy hot water storage tank Withdrawn DE19602973A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19602973A DE19602973A1 (en) 1996-01-27 1996-01-27 Heat energy measurement device for solar energy hot water storage tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19602973A DE19602973A1 (en) 1996-01-27 1996-01-27 Heat energy measurement device for solar energy hot water storage tank

Publications (1)

Publication Number Publication Date
DE19602973A1 true DE19602973A1 (en) 1997-07-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19602973A Withdrawn DE19602973A1 (en) 1996-01-27 1996-01-27 Heat energy measurement device for solar energy hot water storage tank

Country Status (1)

Country Link
DE (1) DE19602973A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000058668A1 (en) * 1999-03-30 2000-10-05 Menachem Cohen Hot water tank
NL1019964C2 (en) * 2002-02-14 2003-08-15 Nedap Nv Inexpensive measurement system for determining the average temperature and heat content of, for example, hot water boilers.
CN103900265A (en) * 2012-12-27 2014-07-02 海尔集团公司 Solar water heater and method for measuring amount of saved energy of solar water heater
CN106461267A (en) * 2014-04-08 2017-02-22 安广达股份有限公司 Thermal energy metering using an enthaly sensor
DE102017129014B3 (en) 2017-12-06 2019-02-28 Johann Roggenstein System for determining a quantity of heat
DE102011011022B4 (en) 2010-11-08 2023-08-17 VK Energie GmbH Process for determining the status of a thermal buffer storage tank and for multi-criteria control of a heating system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384793A (en) * 1980-12-22 1983-05-24 Uop Inc. Temperature profile monitoring method and apparatus
WO1988005160A1 (en) * 1986-12-24 1988-07-14 Rheem Australia Limited Integrating temperature-averaging sensor
US4915507A (en) * 1987-07-17 1990-04-10 Janotta Louis J Liquid average temperature measuring apparatus and method
GB2227562A (en) * 1989-01-28 1990-08-01 William Robert Bingham Monitoring hot water level in tanks
JPH05266475A (en) * 1992-03-19 1993-10-15 Csk Corp Optical card with fingerprint authenticating function and device for the optical card read/write
DE4401539A1 (en) * 1994-01-20 1995-07-27 Stiebel Eltron Gmbh & Co Kg Hot water tank with hot water quantity indicator
DE19511218A1 (en) * 1994-03-25 1995-09-28 Vaillant Joh Gmbh & Co Filling hot water storage tank heated indirectly via secondary heat exchanger

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384793A (en) * 1980-12-22 1983-05-24 Uop Inc. Temperature profile monitoring method and apparatus
WO1988005160A1 (en) * 1986-12-24 1988-07-14 Rheem Australia Limited Integrating temperature-averaging sensor
US4915507A (en) * 1987-07-17 1990-04-10 Janotta Louis J Liquid average temperature measuring apparatus and method
GB2227562A (en) * 1989-01-28 1990-08-01 William Robert Bingham Monitoring hot water level in tanks
JPH05266475A (en) * 1992-03-19 1993-10-15 Csk Corp Optical card with fingerprint authenticating function and device for the optical card read/write
DE4401539A1 (en) * 1994-01-20 1995-07-27 Stiebel Eltron Gmbh & Co Kg Hot water tank with hot water quantity indicator
DE19511218A1 (en) * 1994-03-25 1995-09-28 Vaillant Joh Gmbh & Co Filling hot water storage tank heated indirectly via secondary heat exchanger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 62-126321 A., In: Patents Abstracts of Japan, P-635,Nov. 10,1987,Vol.11,No.342 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000058668A1 (en) * 1999-03-30 2000-10-05 Menachem Cohen Hot water tank
NL1019964C2 (en) * 2002-02-14 2003-08-15 Nedap Nv Inexpensive measurement system for determining the average temperature and heat content of, for example, hot water boilers.
EP1336828A1 (en) * 2002-02-14 2003-08-20 N.V. Nederlandsche Apparatenfabriek NEDAP Measuring system for determining the average temperature and optionally heat content of, for instance, hot water boilers
DE102011011022B4 (en) 2010-11-08 2023-08-17 VK Energie GmbH Process for determining the status of a thermal buffer storage tank and for multi-criteria control of a heating system
CN103900265A (en) * 2012-12-27 2014-07-02 海尔集团公司 Solar water heater and method for measuring amount of saved energy of solar water heater
CN103900265B (en) * 2012-12-27 2017-10-13 海尔集团公司 Solar water heater and energy-saving solar metering method
CN106461267A (en) * 2014-04-08 2017-02-22 安广达股份有限公司 Thermal energy metering using an enthaly sensor
CN106461267B (en) * 2014-04-08 2019-08-09 安广达股份有限公司 Use the thermal metering of enthalpy sensor
DE102017129014B3 (en) 2017-12-06 2019-02-28 Johann Roggenstein System for determining a quantity of heat

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8139 Disposal/non-payment of the annual fee