Empirical Research on Decoupling Relationship between Energy-Related Carbon Emission and Economic Growth in Guangdong Province Based on Extended Kaya Identity

Table 1

Carbon emission coefficients of different kinds of energy.

Energy type	Net calorific value; (TJ/10^3t)	Carbon content; (t/TJ)	Carbon emission; coefficients (tC/t)
Raw coal	20.7	26.6	0.55
Washed clean coal	28.2	25.8	0.73
Other types of washed coal	28.2	25.8	0.73
Briquettes	20.7	26.6	0.55
Coke	28.2	29.2	0.82
Coke-oven gas			0.20
Other gases			0.20
Other coking products	28.2		0.82
Natural gas			0.44
Crude oil	42.3	20.0	0.85
Gasoline	44.3	18.9	0.84
Kerosene	43.8	19.6	0.86
Diesel oil	43.0	20.2	0.87
Fuel oil	40.4	21.1	0.85
Liquefied petroleum gas	47.3	17.2	0.81
Refinery gas	49.5	15.7	0.78
Other petroleum products	40.2	20.0	0.80

Notes: (1) The unit of carbon emission coefficients of “Coke-oven gas,” “other gases,” and “natural gas” is “ton carbon/ton standard coal equivalent” or “tC/tsce.” Carbon emission coefficient of natural gas comes from reference [35] and carbon emission coefficients of “coke-oven gas” and “other gases” are calculated according to the relationship between their calorific value and natural gas. (2) The unit of other energy’s carbon emission coefficient is “ton C/ton” or “tC/t.” It represents carbon emission from one tone physical quantity energy. Carbon emission coefficient = net calorific value × carbon content, net calorific value, and carbon content come from 2006  IPCC  Guidelines  for  National  Greenhouse  Gas  Inventories [36]. Carbon content per unit coal is higher than oil, but its net calorific value is lower than that of oil, resulting in the carbon emission coefficient of coal being lower than for oil. We reference here the paper [37].