The excessive air coefficient, flue gas emissiontemperature and fuel consumption are three major factors affecting the heat efficiency of the furnace.
过剩空气系数、排烟温度、燃料用量是影响加热炉热效率的三个主要因素。
2
And the external causes includes coal combustion temperature and fume emissiontemperature, the internal causes includes maceral composition, volatility content and calorific capacity.
外因条件包括：锅炉燃烧温度及排烟温度；内在因素包括：炉前煤显微煤岩组成、挥发份及发热量。
3
China upholds the proposal of reducing per capita carbon emission so as to prevent the global temperature from increasing 2 more degrees Celsius.