This paper measures the carbon emissions efficiency by using data envelopment analysis. The gross domestic product and carbon emissions are the two outputs, and labor, energy consumption and capital stock are the three inputs in our DEA model. We decompose changes of carbon emissions performance into two contributors: the carbon emissions technical efficiency change and the carbon emissions technical change. For the developing countries mentioned in this paper as a whole, the empirical results indicate that the carbon emissions technical efficiency change is the contributor to carbon emissions performance increase, while the carbon emissions technique change is the component driving carbon emissions performance decrease during 1983-2003. However, the carbon emissions technical efficiency change is the contributor to carbon emissions performance decrease, while the carbon emissions technical change is the driving force to carbon emissions performance increase during 2003-2008.

A mathematical model is developed for the gas flow in a biomass-fired grate boiler with inner dust removal device, with the purpose to optimize the combustion condition. The distribution of gas flow is determined by the air flow ratio and the optimization is realized by the particular simulation. The optimal air flow is obtained by the analysis of various air flow ratios, via the comparison of flow characteristics and turbulence kinetic energy. The results of the numerical simulation show that the optimum air flow can help the sufficient the mixing and burnout of combustible in the furnace. It clearly indicates that the numerical simulation can be an effective tool for the practical guidance.

In this study, Nano-TiO2films are incorporated with heavy metal Pt by the Sol-Gel Dip-Coating (SGDC) method to change their photo-catalytic properties. The Pt and Pt/TiO2sol is prepared first, then it was used for coating on the ITO by the Dip-Coating method; finally, through calcination under the high temperature, the desired Pt and Pt/TiO2film can be obtained. The film structure was tested by the photoelectric test, XRD and AFM. Results showed that the best preparation conditions is identified as 10ml of Tetrabutyltitanate, 20ml of Anhydrous ethanol and 3ml of Tri-ethanolamine, with a 450°C of calcination temperature lasting for 3h; 3 layers of coating is also suggested with the Pt content being 0.30mol %.

A numerical study on a gas-solid model to predict the particle flow structures of dual support-leg fluidized bed has been conducted. Due to the symmetry motion trajectory of the particles in the dual support-leg fluidized bed, unilateral furnace was taken into account in the model to simplify calculation. The results indicate that, without buffer set on the wall, three different zones can be distinguished in terms of granular flow mechanisms. The velocities of the upward flow without buffer set on the wall are much higher than that with buffer set.

Biomass direct combustion power generation is the most simple but effective way in dealing with environmental issues and energy crisis. A comprehensive diagnosis with accurate evaluation of energy saving potential of a given biomass power plant is of great importance in lowing the cost of generating electricity, reducing the consumption of energy and pollutant emissions [1]. This paper throws light upon an innovative energy consumption diagnosis method-the specific consumption analysis theory, which is based on the First and Second law of thermodynamics [2,3]. Taking a given biomass power plant of National Energy Group as an example, mathematical models are made based on all the components and processes. The specific consumption analysis theory is employed to calculate the specific consumption within the biomass power plant using design parameters under design operating conditions, thus demonstrating the specific consumption distribution in the power plant, which provides theoretical basis for energy-saving and optimization in biomass power plant.