Abstract
Energy use of boiler fan motors has been estimated using energy audit data. Energy savings using variable speed drive by modulating fan speed has been es-timated as well. Bill savings and associated emission reductions using variable speed drive have been estimated and presented. It has been found that 139,412, 268,866, 159,328, and 99,580 MWh electrical energy can be saved for 40, 60, 80, and 100% motor loadings, respectively for 60% speed reduction. Corresponding bill savings for the aforementioned energy savings have been found to be 7,318.335, 14,113.933, 8,363.812, and US 135,911.944 for 40, 60, 80, and 100% motor loadings, respectively, for 60% speed reduction. Along with energy sav-ings, 69,770.744, 134,558.329, 79,738.065, and 49,836.603 kg of CO 2 emission can be avoided for the associated energy savings as a result of energy savings us-ing variable speed drive for 40, 60, 80, and 100% motor loadings. Moreover, 32,503.558 GJ of fossil fuel can be saved for the flue gas temperature reduction as a result of reducing fan motor speed reduction. Flue gas energy savings for oxygen trim system has been estimated and found to be 549,310,130 GJ for 16.9% of excess air reduction with payback period less than a day.
| Original language | English |
|---|---|
| Pages (from-to) | 705-719 |
| Number of pages | 15 |
| Journal | Thermal Science |
| Volume | 15 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2011 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy -
SDG 9 Industry, Innovation, and Infrastructure -
SDG 13 Climate Action
Keywords
- Boiler energy savings
- Emission reductions
- Variable speed drive
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