WO1981002786A1 - Dispositif de mesure de consommation de chaleur pour installation de chauffage - Google Patents

Dispositif de mesure de consommation de chaleur pour installation de chauffage Download PDF

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Publication number
WO1981002786A1
WO1981002786A1 PCT/DE1981/000049 DE8100049W WO8102786A1 WO 1981002786 A1 WO1981002786 A1 WO 1981002786A1 DE 8100049 W DE8100049 W DE 8100049W WO 8102786 A1 WO8102786 A1 WO 8102786A1
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WO
WIPO (PCT)
Prior art keywords
radiator
frequency
quartz crystal
pulses
frequency difference
Prior art date
Application number
PCT/DE1981/000049
Other languages
German (de)
English (en)
Inventor
H Ziegler
Original Assignee
H Ziegler
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 H Ziegler filed Critical H Ziegler
Publication of WO1981002786A1 publication Critical patent/WO1981002786A1/fr

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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/32—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using change of resonant frequency of a crystal

Definitions

  • the invention relates to a device for measuring the heat consumption for heating systems according to the generic term of claim 1.
  • thermocouples are used as temperature sensors, the output signals of which are transmitted in analog form to a central counting point.
  • thermocouples only generate small voltages, which cause losses in the transmission lines to the central metering point.
  • the thermal voltage output is also heavily load-dependent; you have to take the length of the transmission line into account.
  • the present invention is intended to provide a device for measuring the heat consumption for heating systems according to the preamble of claim 1, which is suitable for both decentralized and central recording of the heat consumption and works with high reliability.
  • a measuring device In the measuring device according to the invention, use is made of the fact that the technology in the field of electronic quartz watches has advanced considerably.
  • the quartz crystals and semiconductor chips used in these watches, which contain the frequency dividers, counters, memories and display drivers, as well as the frequently used liquid crystal segment displays are available in excellent quality for very low prices due to their manufacture in very large series.
  • Complete hour and quartz wristwatches with seconds, minutes and date display for one year, including metal wristbands, are already commercially available for around 30 to 40 DM.
  • the measuring device according to the invention is despite considerable better precision and, despite lower maintenance requirements, cost-competitive even with the most common simple evaporation meters so far. Reading is much easier; the measuring range that can be covered by the individual measuring device is much larger; and the apartment owner always has a clear and easily readable display of the total consumption so far.
  • a measuring device has high sensitivity.
  • the sensitivity of the measuring device is selected according to the size of the associated radiator. This is done simply by selecting the cutting direction of the quartz crystal; by mere different assembly with
  • Quartz crystals can be used to scale the measuring device for a specific room.
  • a measuring device as specified in claim 4, can also be produced by small companies not previously active in this area simply using ready-made quartz watches, which can only be modified very slightly if this cannot already be done by the watch manufacturer.
  • a particularly good thermal coupling of the quartz crystal to the watch case and thus also to the radiator is obtained.
  • a measuring device according to claim 6 it is ensured in a simple manner that the occupants of the room cannot falsify the measurement result.
  • the cover also serves as the clock on the retaining plate elastically pressing leaf spring. So you always get a tight fit of the bottom of the watch case on the holding plate even with thermally induced dimensional changes of the holding plate or with manufacturing-related dimensional fluctuations of the clock or holding plate or when using clocks from different manufacturers.
  • the development of the invention according to claim 12 is advantageous with regard to a good thermal coupling of the watch case to the heating plate even when the case base is uneven. You also get a full and tipping free contact of the watch case on the mounting plate without the often uneven bottom needing to be turned over.
  • a measuring device can be very easily attached to existing and not specially prepared radiators.
  • the heat consumption in a room is determined even more precisely, since not only the temperature of the radiator, but also the room temperature and the return temperature are taken into account.
  • the output signals of the two Schwingquare are first summarized differentially, and a counter of the counting device is only with the
  • Beat frequency applied This is of particular advantage if the counter is located locally away from the quartz crystals, since the electrical power required for the transmission of the pulses can then be kept small. A low electrical power consumption is very important because the entire measuring device should generally be operated exclusively from batteries, so that the heat consumption measurement is ensured even if the electrical network fails.
  • the calculation of the beat frequency is ensured in a simple circuit-technical manner exclusively for positive frequency differences.
  • the development of the invention according to claim 17 is advantageous in terms of keeping the required signal transmission power small.
  • the transmitted signals are of low frequency and are therefore safely below the frequency prescribed by Swiss Post for systems requiring approval. No special effort is required for the transmission lines either.
  • the development of the invention according to claim 18 is advantageous because the interference immunity of the signal transmission is even better. If one of the pulses of a pulse group is lost or individual interference pulses are injected into the transmission line, the measurement result as a whole is only slightly influenced. In addition, the number of pulses contained in a pulse group can be used to easily take the desired additional consideration of the radiator size, as specified in claim 19, or additionally to take into account the water throughput through the radiator, as indicated in claim 20.
  • the claim 21 specifies a pulse train generator that can be put together from a few simple building groups, with the use of an intermediate output of the frequency divider of the clock as a free-running frequency generator in practice only requiring a monostable multivibrator and an AND gate.
  • claim 23 specifies a simple way of how to obtain an increase in the pulses emitted in a pulse group by the pulse train generator with increasing throughput, that is, the distance between the pulses emitted by the flow meter.
  • each pulse provided by the frequency difference computers for the different rooms is detected with certainty by the central selection device.
  • a pulse train generator need not be provided; the further processing of the transmitted impulses, in particular the multiplication with the scaling factors assigned to the radiator size, takes place in a computer belonging to the central counting device.
  • the overall result is preferably stored in such a way that the computer outputs counting pulses to an electromechanical counter, which thus stores the overall result.
  • the development of the invention according to claim 26 is advantageous in terms of keeping the energy consumption small. Even if the display part of conventional wristwatches continues to run, they can work with a battery for several (3 to 5) years. If the display part is put out of operation, at least this battery life is absolutely guaranteed. No maintenance is required on the measuring device within this period work and only has to read the meter reading at the end of each heating period.
  • the development of the invention according to claim 28 is advantageous because both the part of the measuring device attached to the radiator and the part of the measuring device attached in the room or the part of the measuring device attached when the radiator returns can be designed and manufactured exactly the same. This is of great advantage in terms of low manufacturing costs and simple storage.
  • Fig. 1 the upper part of two adjacent members of a radiator of a hot water heating system with an intermediate heat consumption knife, which with minor modifications can also be used as a heat consumption sensor, a system with central reading of the heat consumption;
  • FIG. 2 a vertical section through the heat consumption meter shown in FIG. 1;
  • Fig. 3 a block diagram of a system for measuring the heat consumption in three different rooms of an apartment with a central reading
  • 4 a block diagram of a modified system for measuring the heat consumption in three different rooms of an apartment with a central reading
  • FIG. 5 shows a circuit diagram of a controllable pulse train generator which is used in the system according to FIG. 3;
  • FIG. 6 a plan view of the opened back of a slightly modified quartz wristwatch, which shows the main part of the heat consumption meter according to FIG. 1 or of heat consumption sensors of the system according to FIGS. 3 and 4;
  • FIG. 7 a circuit diagram of a further controllable pulse train generator for use in the system according to FIG. 3, which is suitable for use with a flow meter emitting pulses.
  • Fig. 1 shows the upper portion of two radiator elements 10, 12. Between these, a heat consumption meter, generally designated 14, is fixedly arranged in heat-conducting contact.
  • the heat consumption meter 14 has a holding plate 16 which has a cup-shaped depression 18. Lateral legs 20 of the support plate are folded so that they run parallel to the surface of the radiator members 10, 12 and can be welded to them or using a heat-resistant adhesive, e.g. a two-component plastic adhesive can be glued.
  • a heat-resistant adhesive e.g. a two-component plastic adhesive can be glued.
  • the holding plate 16 also has legs pointing forward 22 and 24, which form a holding frame for a cover 26.
  • Leaf spring arms 28, 30, which have nose-shaped spring sections 32, are separated from the legs 22 and 24 by incisions. These sections drop slowly to the left and steeply to the right in FIG. 2 and thus enable the cover 26 to be pushed in easily and at the same time to be securely locked therein.
  • a sealing wire 34 is drawn, the ends of which are closed by a seal 36.
  • the sealing wire 34 prevents the cover 26 from being removed unless the seal 36 is destroyed.
  • a quartz wristwatch 38 with segment display for seconds, minutes, hour and date (for a year) is attached, as it is commercially available at low cost.
  • the bracelet has been removed.
  • a plastic layer 42 of preferably tough, heat-conducting, plastically deformable material is preferably tough, heat-conducting, plastically deformable material. This layer ensures a tight fit and a good thermal coupling of the watch case 40 to the holding plate 16 regardless of the respective flatness of the rear of the watch case.
  • the rectangular cover 26 made of elastically deformable glass-clear material has a corrugated transverse cross-sectional shape, such that a central section of the cover in the unloaded state has a greater height than the distance between the nose-shaped spring sections 32 and the front corresponds to the wristwatch 38 inserted into the recess 18. In this way, the cover 26 constantly presses the wristwatch 38 against the inserted state the bottom of the recess 18.
  • the cover 26 is preferably made of clear plastic such as acrylic glass. Such a material can be easily brought into the form described, has good elasticity and enables an unobstructed reading of the display field of the watch.
  • the wristwatch 38 contains a quartz crystal which is usually tuned to a frequency of 32 kHz. This coordination takes place by cutting out a block of quartz from a single-crystal quartz plate while observing precisely specified dimensions and in a very specific direction with respect to the crystal axes of the quartz.
  • the mechanical natural frequency of the quartz block also depends on the modulus of elasticity and the density of the quartz material. These two sizes are temperature dependent. By selecting the cutting direction with respect to the crystal axes, the change in the natural frequency of the quartz crystal with the temperature can be kept small. Indeed, such wristwatches have good accuracy when worn on the arm or stored away at room temperature.
  • the watch In the event of large temperature deviations from the normal working temperature envisaged when designing the watch, however, the watch systematically goes wrong, more precisely, at higher temperatures.
  • This effect is used specifically in the heat consumption meter described above: the respective working frequency of the quartz crystal corresponds to the temperature at which it is located; the The counter of the clock, which adds up the suitable divided output pulses of the quartz crystal, also forms the integral of the temperature over time when the counter reading is compared with the real time.
  • the temperature integral is an indication of the total amount of heat that you emit.
  • the heat consumption measurement is thus carried out using the heat consumption meter shown in Figs. 1 and 2 simply as follows: the wrist watch 38 is set to normal time at the beginning of the heating period (using one of the watch's setting and display control buttons 44) or the difference between real time and that Wristwatch 38 just displayed time is written down. After the heating period, the difference between the time displayed by the wristwatch 38 and the real time is determined again (and, if necessary, the difference already present at the beginning of the heating period is subtracted from this difference). The number thus obtained is a direct measure of the heat consumption. This determination can also be easily carried out by the residents of the apartment during the heating period in order to continuously monitor the heat consumption.
  • a conventional quartz wristwatch essentially consists of the watch case 40, of a printed circuit 46 which carries the integrated circuits 48 for dividing down the frequency emitted by the quartz crystal, for counting and for controlling the segment display and for presetting the watch, from a holder 50 for a button cell 52 and from the quartz crystal 54 soldered to the printed circuit 46, which is in its own small housing. It is therefore easily possible to replace the quartz crystal 54.
  • the quartz crystal 54 is cut in such a way that the temperature response of its natural frequency is small. You can now cut a quartz crystal, which is particularly well suited for heat consumption measurement, in reverse, in a direction in which the temperature response of the natural frequency is very large. These directions are also known, the corresponding changeover of the crystal saw devices presents no difficulties. In this way, one can increase the difference between the "time" displayed by the wristwatch and the real time, which represents the heat consumption, and thus improve the sensitivity of the heat consumption meter.
  • the thermal coupling of the quartz crystal 54 to the watch case 40 can be further improved by connecting it to the watch case 40 via a grease or potting compound 56, which is indicated by dots in FIG. 6.
  • the heat consumption meter described above which, as said, can be produced from a conventional quartz wristwatch without or with very slight modifications, can also be used as a temperature sensor for central heat consumption measuring systems with further minor modifications, as will now be described below with the aid of further examples.
  • Fig. 3 shows a heat consumption measuring system with an outside of the apartment, e.g. Consumption indicator 58 arranged in the stairwell.
  • a computer 60 which at the same time specifies the work of a multiplexer 62 and can be connected to intermediate meters 64, 66, 68 via this.
  • the latter are each assigned to one of the rooms in the apartment in question and show the total previous heat consumption in the assigned room.
  • the computer 60 adds the levels of the counters 64, 66 and 68 at predetermined time intervals and updates the consumption display 58 accordingly.
  • the latter, the computer, the multiplexer and the intermediate meters for the individual rooms are combined into one unit.
  • the computer and the multiplexer can also be used for rooms in other apartments on the same floor, the computer then controlling correspondingly more consumption indicators (one for each apartment) and programmed so that it is the sum of the meter readings of one Outputs the intermediate meter belonging to the assigned consumption display.
  • the intermediate counters 64, 66 and 68 are on the input side Consumption-sensing units 70, 72, 74 connected, which are each arranged in a room and are connected via transmission lines 76, 78, 80 to the intermediate meters 64, 66, 68 arranged in the stairwell.
  • the sensing units 70, 72, 74 work in such a way that they emit pulse trains at a frequency which corresponds to the difference between the radiator temperature and room temperature (or the difference between the inlet temperature and the return temperature of the radiator), the number of pulses of which depends on the size of the radiator and / or depends on the water flow through the radiator.
  • sensing unit 70 In Fig. 3 only details of the sensing unit 70 are shown, the other sensing units have the same structure.
  • the sensing unit 70 comprises two temperature sensors 82 and 84, which are constructed in exactly the same way as the heat consumption meter 14 according to FIGS. 1, 2 and 6. Only a coaster output of the frequency divider downstream of the quartz crystal is connected to an output line 86 and 88, respectively.
  • the most easily accessible output of this type is generally the one with 1 Hz, which is also particularly suitable with regard to the required capacity of the intermediate meters.
  • the temperature sensor 82 is intended to measure the average radiator temperature and for this purpose is located between the middle radiator members at about 60% of the height of the radiator.
  • the temperature sensor 84 is installed in a wall of the room under consideration, which is not a direct one
  • the temperature sensor 82 can also be arranged at the inlet connector of the radiator and the temperature sensor 84 at the outlet connector. In both cases, the temperature sensor 82 is at a higher temperature than the temperature sensor 84, thus emits pulses at the 1 Hz output terminal with a somewhat higher frequency than the temperature sensor 84, as is shown in a greatly exaggerated manner in FIG. 3. In reality, the frequency difference is only a few parts per thousand. This frequency difference is a measure of the current heat output from the radiator.
  • a flip-flop 90 and an AND gate 92 are provided to determine the frequency beat.
  • the set input S of the flip-flop 90 is connected to the temperature sensor 82, its reset input R to the temperature sensor 84.
  • the inputs of the AND gate 92 are connected to the "1" output of the flip-flop 90 or the output of the temperature sensor 82. This gives a pulse at the output of the AND gate 92 when the phase position of the pulses emitted by the temperature sensor 82 has shifted over time to that of the pulses emitted by the temperature sensor 84 to such an extent that two pulses from the temperature sensor 82 just between two Pulses from the temperature sensor 84 match. Only then is the AND gate 92 already controlled by a previous pulse and allows the subsequent pulse to run through the temperature sensor 82.
  • the flip-flop 90 is reset by the temperature sensor 84 before the next pulse from the temperature sensor 82 arrives. If the flip-flop 90 switches very quickly, compared to the length of the pulses, the set input of the flip-flop 90 is preceded by a delay path, so that it is ensured that the pulses of the temperature sensor 82 do not open the AND gate 92 themselves can.
  • pulses are only obtained at the output of the AND gate 92 if the frequency of the temperature sensor 82 is greater than that of the temperature sensor 84. There is therefore no counting in the intermediate counter 64 if in In summer, the temperature sensor 82 attached to the radiator should be once colder than the temperature sensor 84 attached to a building wall.
  • the output of the AND gate 92 is connected to the input of a pulse train generator 94, which emits a predetermined number of pulses when activated. This number is preset with regard to the radiator size of the room under consideration and can - if desired by modifying the signal of a control line 96 - be additionally modified in accordance with the water throughput through the radiator.
  • the output of the pulse train generator 94 is connected to the intermediate counter 64 via the transmission line 76.
  • the output signal of the pulse train generator 94 is also given to the counter and display electronics of one of the wristwatches, which was used to build the temperature sensor 82 or 84 ver. This counting and display electronics together with the associated segment display is indicated schematically in FIG. 3 at 98.
  • the flip-flop 90, the AND gate 92 and the pulse train generator 94 are preferably attached to the holding board of one of the two temperature sensors. You then only have to interrupt the connection between the 1 Hz output of the frequency divider and the counter of the clock in the corresponding wristwatch, connect this output to the flip-flop 90 and the output of the pulse train generator 94 again to the input of the counter of the clock connect to. With the other temperature sensor, the display, its driver and the counter can be deactivated.
  • the meter and the display can also be used the wristwatch of the first temperature sensor can be taken out of operation.
  • transparent covers 26 opaque covers in the color of the radiator or the wall can then be used in these cases, for example appropriately painted covers.
  • An AND gate 100 is connected on the input side to a free-running frequency generator 102, which is set to a frequency between 10 and 1000 Hz, and to a monostable multivibrator 104, the period of which can be preset manually by means of a potentiometer in accordance with the radiator size and additionally by applying signal the control line 96 can be modified.
  • a corresponding analog output signal can be provided by a corresponding water flow meter, which is additionally attached to the radiator.
  • Such a flow meter is used in particular when the two temperature sensors are mounted at the inlet or outlet of the radiator. It is understood that one can determine the total heat consumption of an apartment using only two temperature sensors and a flow meter, if the radiators of the apartment are fed from a common supply line and are connected to a common return line.
  • the flip-flop 104 is triggered by the AND element 92, a number of pulses is thus obtained at the output of the AND element 100, which is assigned to the size of the radiator and / or the water throughput of the radiator.
  • This pulse train then arrives at the intermediate counter 64, which counts up accordingly.
  • signal transmission between the individual rooms and the central counting device takes place only rarely, so the power requirement for this is low.
  • a signal is transmitted, however, it consists of a large number of pulses, so that the eventual loss of a single pulse or the random scattering of an interference pulse is practically insignificant for the overall result.
  • the number of pulses of a train can easily be used to carry out the multiplication of the temperature difference x heat dissipation surface of the radiator, as already explained above.
  • Fig. 4 shows a modified heat consumption measuring system with a central reading.
  • Sensor units 106, 108, 110 which each correspond to the left part of the sensor unit 70 with the temperature sensors 82, 84, the flip-flop 90 and the AND gate 92, trigger downstream monostable flip-flops 112, 114, 116, which are connected via transmission lines 118, 120, 122 are connected to the inputs of a multiplexer 124, which is connected on the output side to a computer 126.
  • the computer 126 controls the operation of the multiplexer 124 via a line 128 and sends counting pulses to an electromechanical counter 130.
  • the period of the flip-flops 112, 114, 116 is greater than the total period of the multiplexer 124, but is still small compared to the time that lies under normal operating conditions between successive pulses at the output of the sensor units 106, 108, 110.
  • the period of the flip-flops 112, 114, 116 is preferably a multiple of the period of the multiplexer 124.
  • the computer has a read-only memory for each of the rooms, in which there is a multiplier assigned to the radiator size. Every time computer 126 determines that the signal level on one of the transmission lines has changed since the last monitoring, it gives the electromechanical counter such a number of counting pulses as is specified by the read-only memory assigned to this transmission line.
  • Monitoring can be limited to signal level changes in one direction (e.g. from low level to high level); It is particularly advantageous if both falling and increasing level changes are used, since the consequences of transmission errors are kept small.
  • the computer can also additionally check whether the level change just observed is compatible with the level change registered last and thus subsequently reconstruct any level changes that have been overlooked. This ensures a very high level of signal transmission security between the sensing units and the computer, although individual pulses are only given to the computer relatively rarely.
  • Does the computer set e.g. a level change from high level to low level and if the last level change was of the same nature, he knows that a level change from low level to high level has been lost due to an error in the signal transmission. He can then take this level change into account in a corrective manner by additionally transmitting a corresponding number of counting pulses to the counter 130.
  • This correction can additionally be carried out under the restrictive condition that between the level changes under consideration there must be a minimum number of multiplexer cycles, the total duration of which is somewhat shorter than the smallest distance to be expected in normal operation between successive pulses of the sensor units 106, 108, 110 any short-term interruption of the pulses emitted by the flip-flops as a result of bad contacts or interfering interference pulses cannot falsify the heat measurement.
  • the computer 126 can also adaptively determine the corresponding minimum number of multiplexer cycles for each transmission line itself by continuously monitoring after how many cycles in the past the pulses followed on average on this transmission line.
  • Fig. 7 shows a modified pulse train generator 94 which is more suitable for use with a flow meter which provides pulses at a frequency associated with the throughput.
  • Such flow meters with impellers and contactless sensors responsive to their passing are commercially available in various forms. With simultaneous temperature measurement of the incoming and outgoing water using temperature sensors as described above, they enable a particularly exact determination of the heat actually emitted by the radiator.
  • the one according to FIG. 7 has a free-running frequency generator 102 and an AND gate 100 connected downstream of it.
  • the control of the AND gate 100 is now carried out by a "monostable multivibrator" 104 which can be controlled in its period by the digital signals of the flow meter, to which two flip-flops 132, 134, three AND gates 136, 138, 140, a two-digit binary counter 142 and include a monostable multivibrator 144.
  • Their interconnection can be seen in detail in the drawing and also results from the following functional description:
  • the flow meter generates 96 pulses on the control line, the greater the throughput, the smaller the distance between them. These impulses are usually blocked by AND gate 136 since flip-flop 132, like flip-flop 134, is normally reset. The same applies to the binary counter 142, the reset state of which corresponds to the number "1".
  • the flip-flop 132 If the flip-flop 132 is set from the output of the AND gate 92, the first subsequent pulse on the control line 96 can switch the binary counter 142 to "0".
  • the signal at the "0" output of the binary counter 142 is passed through by the AND gate 138, since its other input is connected to the "0" output of the flip-flop 134, which is still on hold. This triggers the monostable multivibrator 144.
  • their output signal does not yet reach the AND gate 100 because the AND gate 140 connected to the "1" output terminal of the flip-flop 134 is still blocking.
  • the binary counter 142 With the next pulse on the control line 96, the binary counter 142 is now switched to "1", whereby the flip-flop 134 is set. Now the AND gate 140 is controlled, and the pulses of the frequency generator 102 are output via the AND gate 100 until the pulse emitted by the flip-flop 144 ends. A new triggering of the flip-flop 144 by pulses supplied by the flow meter is not possible since the flip-flop 132 is reset with the first pulse of the pulse train indicated by the AND gate 100, so that the AND gate 136 locks again. At the same time, the binary counter 142 and the flip-flop 134 are also returned to their initial state.
  • the pulse train generator 94 thus outputs Ira pulse trains which contain the more pulses, the faster the pulses of the flow meter follow one another, that is to say the greater the throughput.
  • the period of the monostable multivibrator 144 is before in terms of the radiator size set. It can be seen that the total number of pulses emitted by the AND element 100 is greater, the greater the measured temperature difference and the greater the measured throughput through the radiator.
  • the pulse train generator according to FIG. 7 can easily be put together from a few cheap standard components.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Combustion & Propulsion (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

Un dispositif de mesure de chaleur pour corps de chauffe d'installation de chauffage presente comme element sensible a la temperature, un quartz taille oscillant. Son signal oscillant numerique est integre par un compteur. En utilisant un deuxieme quartz oscillant dans la piece egalement sensible a la temperature on peut numeriquement obtenir par une mesure de difference la chaleur fournie. Un tel dispositif de mesure de chaleur peut etre realise par une montre a quartz courante du commerce notamment une montre-bracelet (38). Pour ameliorer la sensibilite on peut utiliser un quartz oscillant taille en fonction de la temperature.
PCT/DE1981/000049 1980-03-20 1981-03-20 Dispositif de mesure de consommation de chaleur pour installation de chauffage WO1981002786A1 (fr)

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Application Number Priority Date Filing Date Title
DE3010738 1980-03-20
DE19803010738 DE3010738C2 (de) 1980-03-20 1980-03-20 Heizkostenverteiler

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WO1981002786A1 true WO1981002786A1 (fr) 1981-10-01

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128706C2 (de) * 1981-07-21 1985-11-14 Horst Prof. Dr. 4790 Paderborn Ziegler Fühleinheit zur Fernmesssung des Wärmeverbrauches an einer Mehrzahl von Verbrauchsstellen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2600256A1 (de) * 1975-01-09 1976-07-15 Centre Electron Horloger Quarzthermometer
FR2420125A1 (fr) * 1978-03-14 1979-10-12 Thermique Cie Fse Exploit Indicateur electronique de consommation d'energie thermique
DE2830729A1 (de) * 1978-07-13 1980-01-24 Hirsch Alfred Kg Anordnung zum erfassen des waermeverbrauchs in einem mit erwaermtem durchflussmedium beaufschlagten verbraucherkreis

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK142557B (da) * 1975-09-08 1980-11-17 Odin Clorius As Varmemåler.
DE2711437B2 (de) * 1977-03-16 1980-12-11 Danfoss A/S, Nordborg (Daenemark) Vorrichtung zur Messung der in einem Wärmetauscher übertragenen Wärmemenge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2600256A1 (de) * 1975-01-09 1976-07-15 Centre Electron Horloger Quarzthermometer
FR2420125A1 (fr) * 1978-03-14 1979-10-12 Thermique Cie Fse Exploit Indicateur electronique de consommation d'energie thermique
DE2830729A1 (de) * 1978-07-13 1980-01-24 Hirsch Alfred Kg Anordnung zum erfassen des waermeverbrauchs in einem mit erwaermtem durchflussmedium beaufschlagten verbraucherkreis

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DE3010738A1 (de) 1981-09-24
EP0047763A1 (fr) 1982-03-24

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