DE2363489A1 - Electronic heat consumption meter for heating cast allocation - performs continuous monitoring of consumption at central point - Google Patents

Abstract

The results of electrical measurements on the heaters are supplied to the central part of the meter, where they are multiplied by coefficients with the aid of an analogue-digital computer unit. These coefficients correspond to the size and type of the individual heaters. After multiplication has been performed, the resulting values are added together and integrated with time, in order to give heat consumption in the form of a figure. A pulse counter is used as an integrator and the greater the output signal from the analogue multiplier-adder, the greater the number of pulses in a certain interval.

Description

4ooi> Meerbusch 1

At Kapellengraben 47

Manfred H.oltkamp,
4543 -uienen

..Amselweg 6

Description for electronic heat consumption meters

The heat consumption in apartments, office rooms and others xiäum αηα systems ^ which are heated by a central heating system weraen, wira often after the apartment area - or after The hot body pool, he reckoned on all existing parties calculated.

üine further measurement method uses the lüssigkeitsverdunstung Ji ^n, which is a measure of aie amount of heat consumed "

The first two methods are obviously unfair. You take into account on the one hand not the temporal use of the individual radiators, on the other hand not the air temperature in the jfc dreaming by opening or closing the window as well can be very different due to additional heating devices.

With the evaporation method, the liquid also evaporates ttarm, especially when the radiators are completely turned off strong if other heating is used at the same time. -Uie speed of evaporation depends on the humidity.

The main disadvantage of this method, however, is that every radiator must be read in the apartments in a billing rhythm by a strange Jrerson. In addition, the measurement results must were still converted for each radiator, since the size and Type aes radiator is still to be considered. This calculation is then in the Hegel with the help of an electronic Jiecaners performed.

509827/0040

In contrast to the methods mentioned above, the electronic Heat consumption meter it is possible to exactly measure the Heat consumption at a central point also outside of the Display homes or offices, similar to the electricity meter. The heat consumption of the individual radiators is added automatically taking into account your size. Included an absolute measurement of the amount of heat would also be possible. she but does not appear / appropriate, as all the set-up costs of the entire electronic heat consumption meter system would increase without changing the distribution of heating costs.

With the relative measurement, the readings for all apartments etc. that are supplied by the same heating system are compared, where simply the percentage of the current apartment aas the total sum is calculated.

This simple calculation can be used by anyone interested e.g. B. can be carried out for customer roll purposes at any time.

The electronic heat consumption meter is a small and uncomplicated analog-digital Hechner. ilr performs automatically and without service costs, these tasks are carried out with the evaporation method with a lot of irrational effort, hassle and other things Complications are connected. and the calculation of the cost distribution in an xtecnenzentrum can hardly be controlled for the person concerned. Injustices occur when apartments - from whatever ü-runa - not accessible sinci. jThe time delay between reading, deiii Calculating and delivering the results is achieved with the evaporation method also another negative hell.

The electronic heat consumption meter enables the landlord and the tenant to check and compare the heat consumption at any time. ^ ^ie

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The calculation can be done at any time by simply adding all the counter states and then calculating the percentage be carried out. ·

Compared to the evaporation method, the resolution of the electronic heat consumption meter is much greater, whereby more precise measurements are possible even within a few hours. This allows z. ü- .. one tenant systematically read his current percentage heating cost consumption in figures / he can thus continuously monitor his consumption central point and, with systematic application, even save costs. .

Functional principle of the electronic heat consumption selector

The amount of heat given off by a radiator to the air depends on the temperature difference between the radiator and the air, as well as on the area of the radiator.

The temperature difference is measured with the help of temperature-dependent resistors and an operational amplifier converted into the magnitude of the electrical voltage. The measurement results of the individual radiators are transferred to the central part of the Heat consumption meter supplied. There is an analog multiplier-adder that fulfills two functions.

First, the results of the temperature measurements are carried out Coefficients multiplied by the type and size of each radiator consider.

Second, the multiplication results thus obtained added. ■ -.

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The electrical trot thus obtained must be integrated with time. liaraas then results in the total consumption.

This analog electrical quantity is further converted into a number converted by electrical impulses, which have an electroiaeeehanischen Drive pulse counter. The larger the output signal of the analog multiplier-auditor, the greater the number of the impulses in a certain period of time. The pulse counter plays uie -tolle aes integrator here.

The block diagram of the electronic heat consumption meter is presented in the file drawing.

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Claims (1)

4oo5 Me erbusch 1 ί! Γ Adi. Kapellengraben 47 Manfred Holtkamp
4543 Lienen Amselweg 6 a heat consumption meter for heating cost allocation, daaareh. marked that the results of the electrical, measurements carried out on the radiators central part of the meter are fed through there with the help of an analog-digital electronic fiechenwerk Coefficients are multiplied by the size and type of the correspond to individual radiators and after the multiplication added together and integrated with the time "to the Display heat consumption in the form of a number. word 509 8 27/0 040, Blank