Ranking Renewable and Fossil Fuels on Global Warming Potential Using Respiratory Quotient Concept

Figure 3

CO₂ emitted in tons per GJ of energy input for fuels with different RQ factors. Fuel measured heating value and composition data were used to estimate CO₂ released (for fuels listed in Table 2). Slope of both the trend lines (actual heating value and heating value estimated using Boie equation) was approximately 0.1 [13]. = CO₂ in tons per GJ, = RQ.