Regarding the standard methods for calculating energy consumption, whether it is based on conversion factors or calorific value, how do people carry out the calculations and assessments?
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As the title suggests: Since energy consumption is calculated based on the weight of gas consumed, the biggest error arises from the significant difference in the hydrogen content of gas between winter and summer. For example, the hydrogen content in gas can reach 45% in summer (the maximum value), while it may be 25% in winter. This results in a large difference in energy consumption, as the calorific value of gas is highest at 12,000 MJ in summer and lowest at 7,000 MJ in winter. The calorific value of standard gas should be 9,000 MJ per ton (an estimate; I don’t remember the exact figure). How do you guys calculate and record energy consumption? What is the calorific value of gas in enterprises with advanced energy consumption metrics? If there are any standards, please share them. Thank you!
Enterprises can adjust this calorific value based on the composition analysis data; our factory has made adjustments several times, but it needs to remain relatively fixed over a certain period of time.
Here, we calculate based on the actual consumption amount, not by converting it using the calorific value!
If there is a national standard, it is converted to standard oil or standard coal
As specified in GB50441, the energy conversion factor shall be adjusted according to the actual composition of the fuel gas, with the consumption amount being the actual amount used
The fuel gas is analyzed regularly, and conversion is carried out based on its calorific value