Heat supply measurement sharing method based on heating area, indoor and outdoor temperature difference and heating time

Abstract

The invention relates to a heat supply measurement sharing method based on heating area, indoor and outdoor temperature difference and heating time, belonging to the field of centralized heat supply. The technical scheme is as follows: an effective energy consumption concept is introduced from the aspect of actual utility provided for heating users by a heat supply system; effective heat consumption under different outdoor environment temperatures and indoor heating temperatures of the users can be projected by weakening heat loss or gain due to factors such as structures of buildings, heat conduction and heat radiation among different rooms of users, and the like; the product of temperature difference and time corresponding to each of sampling periods of user rooms under real-time outdoor environment temperature and indoor heating temperature is metered; and finally heat measured by building heat meters according to the product of heating area, heating temperature difference and heating time of the users is shared, and the value of the shared heat is taken as the basic evidence for charging the users, therefore, multiple contradictions and problems existed when household metering is carried out by utilizing the traditional metering method are greatly solved.

Description

technical field [0001] The invention patent relates to the field of central heating. The heating metering and apportionment method based on the heating area, indoor and outdoor temperature difference and heating time can be widely used in central heating to measure user heating by household, and provide a fair and reasonable heat energy apportionment basis for user heating, which can effectively solve the current centralized heating problem. Multiple problems and contradictions in the thermal field. Background technique [0002] In the field of central heating, it is necessary to solve the problem of how to measure and charge the user’s heating. According to the newly issued "Technical Regulations for Heating Metering" JGJ173-2009, the heating metering methods are mainly divided into the following four types: Radiator Heat allocometer method, household heat meter method, flow temperature method and on-off time-area method. In the actual application process, due to the poor...

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Problems solved by technology

Disadvantages of the radiator heat allocometer method: 1) the scope of application is limited, it can only be used for a certain type of radiator system, and it cannot be used in floor radiant heating; 2) the correct installation position is very important, especially for low-temperature heating systems; 3) The average temperature of the radiator must be within a certain range, otherwise the error will be large; 4) It cannot effectively solve the problem of heat transfer between rooms and the problem of high heat consumption at the top of the building; 5) The unified management and service of professional companies, other Higher investment costs and management fees

Disadvantages of the user heat meter method: 1) The current heat meter is difficult to meet the current situation of poor water quality in my country, and the high initial investment or high failure rate of household meters are the main problems; 2) According to the "Measurement Law", the amount of heat settled The meter needs to be calibrated regularly, and there are many practical difficulties in large-scale use; 3) The single-pipe series system is not applicable, and the existing buildings in most northern areas of China use the single-pipe series system indoors, resulting in indoor pipe series. The net change is very large; 4) It cannot effectively solve the problem of heat transfer between households and the problem of high heat consumption at the top of the building

Disadvantages of the flow temperature method: 1) The essence of this method is still the actual heat consumption of the user, and it is still unable to solve the problem of heat transfer in the room wall and high heat consumption at the end and top of the building; 2) due to the adjustment of the three-way valve It is a manual device and cannot automatically adjust the heat supply, so it cannot effectively use the free heat in the room, and the energy saving effect is poor; 3) When the local resistance of the system changes, the flow of all users needs to be re-tested, and the management and maintenance are complicated; 4) Flow The workload of measurement is heavy, and it is difficult for users to generally accept it, which makes the actual operation more difficult

Disadvantages of the on-off time area method: 1) It cannot solve the problem of mismatching radiator capacity and the problem of users changing the radiator capacity without authorization; 2) Simple time measurement is not sensitive to seasonal changes in ambient temperature, resulting in the same heating time 3) It is not suitable for room-by-room metering and temperature control; 4) It is not suitable for use in floor radiant heating; 5) It cannot effectively solve the problem of heat transfer between households and the problem of high heat consumption on the top of the building

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