Xutao Zhang

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As the energy shortage and the widely utilization of the airtight and insulation material, with low ventilation, the numerous synthetic chemicals can't be diluted and replaced, and more and more people are suffered form sick building syndrome (SBS). On the other hand many people spend more than 80% of their time in an artificial climate, for occupants have(More)
This electronic document is a “live” template. The various components of your paper [title, text, heads, etc.] are already defined on the style sheet, as illustrated by the portions given in this document. About 60 percent or 70 percent of the cities in China are short of water in different degree, thus the water resource is very shortage in(More)
Hydronic heating systems are used in homes and apartments worldwide. The variable flow system is advantaged to the energy saving while the control in variable flow system is difficult. This paper describes the typical variable flow hydronic heating system and presents the coupling mathematical model of heat exchanger. Based on the mathematical model, a new(More)
The important to enhancing gaseous elemental mercury (Hg<sup>0</sup>) removal in wet scrubber systems is altering the chemical form of the Hg<sup>0</sup> to a water-soluble oxidized species. Experiments on the removal elemental mercury from simulated flue gas by aqueous sodium chlorite in a bubble reactor were carried out in this work. The effect of initial(More)
Natural gas is becoming a main source of town gas in China. It is difficult to supply natural gas by pipelines from gas fields to every city in China. To solve the problem, natural gas hydrate (NGH) technology is introduced in this paper. At the same time, NGH technology is compared with liquefied natural gas (LNG) technology and compressed natural gas(More)
Aiming at the emerging issues in the field of public projects, this article carries out a more detailed analysis of the causes from five links including decision-making, budgeting, tendering and bidding, implementation and quality acceptance in the whole process, and arrives at the conclusion that the root of the issues lie in low degree of marketization(More)
The manufacturing activities of an enterprise can be categorized as production with high and low carbon emissions. The evolutionary path of enterprises is analyzed on the basis of a construction of the evolutionary game model. And then carbon tax which is regarded as an effective method to reduce emissions is tested. The conclusion is that carbon tax is not(More)
The aim of this study is to find a model to forecast China's carbon emission using the neural network. Some variables, such as GDP, export, investment in fixed assets and population, are considered. First, the neural network is constructed. Then, considering the effect of sub prime mortgage crisis and European debt crisis, we forecast the emissions in the(More)
The water consumed by power plants is about half of the total annual industrial water consumption in China. Considering some characteristics of wastewater in power plants, the paper presented a new process to treat the wastewater. In the process, wastewater was made centralized treatment utilizing activated sludge firstly, then water purifying agent was put(More)
A certain product of the air source heat pump is selected as the study object in the paper. By variant condition operating performance of such air source heat pump in variant condition of the air source heat pump offered by manufacturer, the thermodynamics analyses are made based on the first law of thermodynamics and exergy analyze theory. Coefficient of(More)
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