Heat economy index analysis method for distributed natural gas energy station in running time

Abstract

The invention discloses a heat economy index analysis method for a distributed natural gas energy station in the running time. The heat economy index analysis method comprises the steps of collecting typical day meteorological data of a corresponding project location in twelve months each year of specific years, and determining the meteorological parameters of the typical days; determining the cooling and heating loads of the distributed natural gas energy station unit when being typical at the typical day of each month of the whole year, and determining the physical property parameters of natural gas; working out output and efficiencyof the unit under various meteorological conditions according to the meteorological parameters corresponding to the running time of the unit; working out the total output and total fuel consumption of the variable load running time of the unit when being typical at the typical days; working out the total fuel consumption and gross generation of the whole year according to the running mode of the unit; and working out the annual heat economy index and thermoelectricity cost allocation index of the distributed natural gas energy station. According to the heat economy index analysis method, the thermoelectricity cooling loads of the designed unit are optimally matched with the user demand characteristics, and high energy utilization rate can be achieved.

Description

technical field [0001] The invention relates to a thermal economic index analysis method of a natural gas distributed energy station during operation period. Background technique [0002] In order to improve the economic level of natural gas distributed energy unit operation, it is necessary to analyze the thermal system economics of the unit in the early design stage of the project, and select the best system design scheme that matches the changing characteristics of cooling and heating loads. The parameters are the main basis for thermal economic analysis. Therefore, the ability to accurately analyze and calculate the thermal economy index parameters has an important impact on the system design and unit selection in the project design stage. [0003] At present, the calculation of thermal economic indicators of domestic natural gas distributed energy stations has not yet formed a systematic and complete analysis and calculation method. The idea of ​​"cogeneration of heat ...

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Problems solved by technology

[0003] At present, the calculation of thermal economic indicators of domestic natural gas distributed energy stations has not yet formed a systematic and complete analysis and calculation method. The idea of ​​"cogeneration of heat and power" is applied. The designed energy station load simply covers the range of user needs, and cannot take into account the operating efficiency of the unit. , energy utilization rate, so that the actual operation scale of the completed unit is too large after it is put into production, and it operates at low load for a long time, resulting in serious consequences of low operating efficiency and low energy utilization rate of the unit, making it difficult to reflect the superiority of the distributed energy system

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