The purpose of this study is to propose degree day method for the snow storage in order to evaluate an optimum storage volume for snow and ice utilization systems. First, we calculated coefficients for evaluation of the optimum storage volume of snowy cold regions in Japan. Second, the proposed method was applied to various building types and space cooling demands, and the relationship between the thermal insulation performance and the snow storage volume was presented.

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This paper conducted quantitative study on the outlook of economy, energy and environment to 2030 of China Xinjiang Uygur Autonomous Region by using econometric method. GDP growth will be over 7% annually between 2006 and 2030, and total primary energy consumption will double by 2030. The continuation of rapid economic growth could result in a lot of difficulties for energy development, environment protection, and CO₂ emissions reductions. For the sustainable development, more comprehensive strategies should be adopted, including development of renewable energy with highest priority, improvement in energy efficiency and automobile fuel efficiency, etc. However, substantial governmental involvements and support, as well as the establishment of a regulatory framework are necessary.

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