Large-scale detailed survey and summarized on the heating present Situation of Shenyang City. Analyze and discuss the existence of the problems. Shenyang heating is still mainly coal-fired boilers in winter. The heating planning and district heat-supply detail planning should be made on the basis of city heating present situation. Adjust the unreasonable heat source and the energy structure, rearrange the unreasonable urban heating supply network, and plan the urban heating scientifically and reasonably. Control the emissions of coal-fired boilers indicators, strengthen the optimization of the efficiency of coal-fired boilers, to achieve the national energy saving and emission-reduction standards, and to promote the sustainable development of city heating.
In this paper, the properties of urban river water quality model’s solutions have been discussed by comparison system, and the result is that the model has nonnegative solutions when all the parameters of model are positive.
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