全球智库信息集成服务系统(G2TT): Nature of energy demand.

G2TT

来源类型	Book Section
DOI	10.1007/978-1-4684-4724-8_3
	Nature of energy demand.
	Häfele W; Khan, A.M.; Raizuddin, S.; Qadir, A.; Qazi, M.N.
发表日期	1984
出处	Physics and Contemporary Needs. Eds. Khan, A.M. , Raizuddin, S. , Qadir, A. & Qazi, M.N. , pp. 43-52 . ISBN 978-1-4684-4724-8 DOI: 10.1007/978-1-4684-4724-8_3 .
出版年	1984
语种	英语
摘要	This being an evening lecture open to the public, is suited to rather general considerations and I will mainly explore the nature of energy demand. Figure 1 is an appropriate starting point and the first point to understand is the distinction between primary, secondary, final, and useful energy. Primary energy is a gift of nature and cannot in general be used as such: oil, coal or uranium first have to be converted in central power stations, refineries or other facilities in order to become a more flexible and useful form of energy. Only in one particular case namely natural gas there is no difference between primary energy and secondary energy. Secondary energy is the electricity at the output of a power plant or the gasoline at the output of a refinery. But then you have to transport the secondary energy to the places of consumption for instance the petrol station or an electric plug in a factory or residence; the energy delivered to the end-user is called final energy. When transforming primary energy into secondary energy there are inevitably losses which may be small as in a refinery or very large as in an electricity generating plant; these losses are rejected waste heat energy.
URL	http://pure.iiasa.ac.at/id/eprint/12068/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/132985
推荐引用方式 GB/T 7714	Häfele W,Khan, A.M.,Raizuddin, S.,et al. Nature of energy demand.. 1984.