How can the LPG consumption of a torch be calculated reliably?
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I would like to ask everyone about the calculation of LPG quantities. The situation is as follows: Our company currently has two 220-cubic-meter spherical tanks. LPG is currently used only as fuel for the permanent flares, with no other inflows or outflows. A new mass flow meter has been installed at the torch (installed after passing calibration); currently, the monthly LPG consumption is calculated by multiplying the volume determined based on the volume of a spherical cap by its density, and there is a significant discrepancy between this value and the mass data recorded by the mass flow meter. Which type of calculation yields relatively more reliable data? Thank you very much.
As long as the flow meter passes the calibration, it can be used as the mass flow rate data for final measurement. The LPG stored in spherical tanks is highly affected by temperature, especially in areas with large temperature differences; in my 3,000-cubic-meter spherical tank, a temperature difference of 1 degree results in a mass difference of about 1 ton.
Our plant’s spherical tank inventory capacity is available in terms of liquid-phase tons and gas-phase tons, with real-time transmission and display! For the material intake and output systems in our factory, the quality flow meter is used as the standard for measuring the amount of material entering and leaving the spherical tanks! Each spherical tank has two remote level gauges! There is an engineer at the dispatch station who is in charge of this matter; feel free to contact me if needed!