核电分布式独立电网架设与核能材料和环境辐射标准.doc

Relative economic incentives for hydrogen from nuclear, renewable, and fossil energy sources?? The specific hydrogen market determines the value of hydrogen from different sources. Each hydrogen production technology has its own distinct characteristics. For example, steam reforming of natural gas produces only hydrogen. In contrast, nuclear and solar hydrogen production facilities produce hydrogen together with oxygen as a by-product or co-product. For a user who needs both oxygen and hydrogen, the value of hydrogen from nuclear and solar plants is higher than that from a fossil plant because “free” oxygen is produced as a by-product. Six factors that impact the relative economics of fossil, nuclear, and solar hydrogen production to the customer are identified: oxygen by-product, avoidance of carbon dioxide emissions, hydrogen transport costs, storage costs, availability of low-cost heat, and institutional factors. These factors imply that different hydrogen production technologies will be competitive in different markets and that the first markets for nuclear and solar hydrogen will be those markets in which they have a unique competitive advantage. These secondary economic factors are described and quantified in terms of dollars per kilogram of hydrogen. Energy parks for former nuclear weapons sites? Public preferences at six regional locations and the United States as a whole?? The United States Department of Energy has proposed building energy parks at some of its former nuclear sites. These parks would develop technologies to enhance renewable energy sources, nuclear, coal, and others, as well as technologies to manage the waste, and transmit the energy. A survey of 3200 United States residents assessed public reaction to the policy. Half of the samples were gathered at four locations each centered on a major DOE facility; 25% were obtained at two other regions; and 25% were a national sample. As a whole, respondents from the four DOE-centered sites were more