Seeking advice on the comprehensive energy consumption of PVC
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| Serial Number | Name | Consumption Quota/t.PVC | Equivalent Heat Value per Unit | Converted to Standard Coal, Kg/t.PVC || 1 | Steam at 0.4MPa | 1.2t | 3780.86 KJ/Kg | 138 |
| 2 | Recycled water | 208t | 2637.8 KJ/t | 14.75 |
| 3 | Desalinated water | 3.04t | 14235 KJ/t | 1.48 |
| 4 | Instrument air | 89.6 Nm3 | 1172 KJ/Nm3 | 3.58 |
| 5 | Compressed air | 16 Nm3 | 1172 KJ/Nm3 | 0.64 |
| 6 | Chilled water | 1.65 GJ | 4.91 | |
| 7 | Electrical power | 424 kWh | 11840 KJ/KWh | 171.36 |
| 8 | Total | | | 335 |
The table above shows the total energy consumption for polyvinyl chloride as calculated by me; it amounts to 335 kilograms of standard coal. However, the clean production evaluation system issued by the National Development and Reform Commission stipulates that the total energy consumption should not exceed 240 kilograms. I would appreciate it if someone could help identify where the issue lies. This post was last edited by gufeng on 2008-1-11 11:26.]
Thank you to all friends who came by to take a look. Although it didn’t help solve the problem, I appreciate your enthusiasm. I’ve now found the cause: there was an issue with the conversion factor for electrical energy; it should be 1 KWh = 3600 KJ, rather than 11840 KJ/KWh. Using this correct conversion factor, the overall energy consumption comes out to 220 kilograms of standard coal, which fully meets the requirements of the **policy.
May I ask whether the conversion factors for steam, circulating water, desalinated water, instrument air, compressed air, and chilled water are obtained through calculation or by referring to a manual? What is the basic approach to calculating comprehensive energy consumption? If it’s not convenient to tell, could you recommend some materials or books? Thank you.
What a great topic. The company requires that the total energy consumption reach 200 standard coal tons; now I finally understand where this figure comes from
Agree with what was said above; it would be even better if the energy consumption could be broken down by each workshop