Fig 1.
Approximate energy consumption scenario by industries in Bangladesh [38].
Fig 2.
Heat dissipation from an uninsulated heated surface (Top-left), Rusted weld joint and carbon deposit due to unburnt fuel (Top-right), Corrosion of the boiler wall due to calcium build-up from untreated water (Bottom-left and Bottom-right) [39].
Table 1.
Recent studies related to boiler operations.
Fig 3.
Improper ventilation for the boiler rooms observed during visual inspection.
Fig 4.
Proposed framework for this research.
Table 2.
Profile of the experts.
Table 3.
Identified barriers to sustainable boiler operation.
Table 4.
Prominence ranking of the barriers to sustainable boiler operation.
Table 5.
Causal ranking of the barriers (the cause group and the effect group).
Fig 5.
Representation of the cause and effect classification of barriers.
Fig 6.
Relationships among the barriers.
Fig 7.
The relationships among the barriers for sensitivity analysis Case 1.
Fig 8.
The relationships among the barriers for sensitivity analysis Case 2.
Fig 9.
The relationships among the barriers for sensitivity analysis Case 3.
Table 6.
Assigned weights based on the educational background of the experts.
Fig 10.
Comparison of different cases and base result.
Table 7.
Comparison among different cases of sensitivity analysis and the base result.