Heat quantity apportionment measuring method and device for central heating

Abstract

The invention relates to a heat quantity apportionment measuring method and a device for central heating. In the method, aiming at a heating system of a switching-on / switching-off type heat supply control mode, the apportionment measurement of the heating heat consumption is carried out according to a switching-on / switching-off time area method, modification with the time is carried out on the opening time of a switching-on / switching-off valve according to an built-in special modification computation program by the real-time measurement of the water supply and return water temperature values of heating users, and accumulation is carried out to calculate a modified opening specific value; when the heating season is over, the final modified opening ratio and the heating area of each user are used for apportioning the total heat quantity to determine heating charge which needs to be charged by each user; and the special modification computation program is designed in such a way that under the opening state of the switching-on / switching-off control valve, the water supply temperature value and the return water temperature value are read, the modified opening ratio is calculated, so the apportionment of the heat quantity used by the users is calculated. The device is suitable for the heat quantity apportionment measuring method for central heating and comprises a room temperature controller, the switching-on / switching-off control valve, a water supply temperature sensor, a return water temperature sensor, a heat supply control / opening time modification integrating instrument and the special modification computation program.

Description

technical field [0001] The invention relates to central heating and heat metering (heat apportionment) technology, belongs to the field of heating, ventilation and air conditioning, and specifically relates to a heat apportionment metering method and device for central heating users. Background technique [0002] With the continuous improvement of the country's requirements for building energy conservation and the reform of the heating charging system, various heat metering methods and their matching heat metering or heat cost metering instruments have emerged and have been applied to a certain extent. At present, the main types of heat meters produced by some manufacturers at home and abroad include mechanical heat meters, electromagnetic heat meters and ultrasonic heat meters. The initial investment of the mechanical heat meter is low, but the flow measurement accuracy is not high, the meter resistance is relatively large, it is easy to block, there are many wearing parts,...

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Problems solved by technology

Chinese patent 200610114686.2 discloses a method for realizing heat regulation and heat metering at the same time, but the accuracy and fairness of heat apportionment metering in this method are still insufficient

These problems include: 1. The current on-off heat sharing device cannot solve the problem of heat sharing deviation caused by the unreasonable initial design of the heating radiator or the user's unauthorized change of the heating radiator capacity. At present, the domestic independent change of the heating radiator area more residents

Generally speaking, the result of using the current on-off heat apportionment device and the "on-off time area method" for heat apportionment is that users who increase the area of ​​​​the radiator without permission will share less heat and pay less heat consumption. The popularization and application of the heat metering (allocation) method and device based on the "on-off time area method" is limited, and its heat allocation and heat fee collection errors cannot be generally accepted by heat users

2. The actual operating heating system will adjust the water supply temperature according to the outdoor temperature change through the climate compensator. The change of the water supply temperature in different periods directly affects the actual heat consumption of the heat users. However, the current on-off heat sharing devices are all It cannot reflect the difference in heat consumption of users under the same heat consumption period in different heat consumption periods, that is, it cannot truly share the heat fairly

3. At present, the indoor system still adopts the design results under the condition of continuous heating, but under the heating condition of on-off regulation mode, there will inevitably be problems of unreasonable matching between equipment selection and design load, thus Residents with disadvantaged locations may have to share more calories and pay more inequities

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