Method and device for improving accuracy and energy-saving efficiency of 'on-off time-area process' heat allocation system

Abstract

The invention provides a method and a device for improving the accuracy and energy-saving efficiency of an 'on-off time-area process' heat allocation system. The device comprises total heat supply metering devices arranged in building heat supply pipes and room temperature controllers and electrical heat balance flow regulating devices which are installed by heat supply users respectively, wherein the room temperature controllers are arranged at reference positions in heating areas of the users; and the electrical heat balance flow regulating devices comprises on-off control valves which are arranged in house branch heat supply pipes of the users. The room temperature controllers monitor indoor temperatures, and the electrical heat balance flow regulating devices control the flows in the heat supply pipes and the opening and closing of the heat supply pipes, and calculate and store the total opening time length of on-off control valves.

Description

technical field [0001] The invention relates to the technical field of heating, ventilating and air conditioning, in particular to a method and a device for the on-off time-area method of heating heat apportionment in a central heating system. Background technique [0002] With the continuous improvement of the country's requirements for building energy conservation and the continuous improvement of the heating charging system, the "Technical Regulations for Heating Metering JCJ173-2009" promulgated by the Ministry of Construction and implemented on July 1, 2009 And indirect metering various heat metering methods. [0003] The most conventional heat meter methods include mechanical heat meters, electromagnetic heat meters, ultrasonic heat meters and many other types. Among them, 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, and there are many wearing p...

AI Technical Summary

Problems solved by technology

However, in actual engineering use, the above-mentioned heat metering (allocation) device based on the "on-off time area method" still has many problems that are difficult to solve and overcome, and it cannot really allocate heat fairly and reasonably.

[0005] Problems include: 1. The current on-off heat apportionment devices cannot cope with the characteristics of the domestic heating "big lag" system, resulting in inaccurate and unreasonable apportionment of heat, and the error of heat apportionment and heat fee collection cannot be accepted by heat users

2. The actual heating system will adjust the flow of a building through the balance valve set up in the building, and adjust the temperature of the water supply through the climate compensator according to the change of the outdoor temperature, which will directly affect the actual heat consumption of the heat users , but none of the current on-off heat apportionment devices can reflect the difference in heat consumption of users under this condition

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 Bringing the unfair phenomenon that the same area and the same temperature of heat users cause different costs due to different locations

Images