eprintid: 4669 rev_number: 9 eprint_status: archive userid: 351 dir: disk0/00/00/46/69 datestamp: 2016-01-15 02:06:48 lastmod: 2021-08-27 17:15:27 status_changed: 2016-01-15 02:06:48 type: article metadata_visibility: show item_issues_count: 1 creators_name: Nakicenovic, N. creators_name: Gilli, P.V. creators_name: Kurz, R. creators_id: 395 creators_id: 1576 creators_orcid: 0000-0001-7176-4604 title: Regional and global exergy and energy efficiencies ispublished: pub internal_subjects: iis_ene internal_subjects: iis_cli internal_subjects: iis_env internal_subjects: iis_ecn divisions: prog_ecs abstract: We present estimates of global energy efficiency by applying second-law (exergy) analysis to regional and global energy balances. We use a uniform analysis of national and regional energy balances and aggregate these balances first for three main economic regions and subsequently into world totals. The procedure involves assessment of energy and exergy efficiencies at each step of energy conversion, from primary exergy to final and useful exergy. Ideally, the analysis should be extended to include actual delivered energy services; unfortunately, data are scarce and only rough estimates can be given for this last stage of energy conversion. The overall result is that the current global primary to useful exergy efficiency is about one-tenth of the theoretical maximum and the service efficiency is even lower. date: 1996-03 date_type: published publisher: Elsevier id_number: 10.1016/0360-5442(96)00001-1 iiasapubid: XJ-96-032 iiasa_bibref: Energy - The International Journal; 21(3):223-237 [1996] creators_browse_id: 214 creators_browse_id: 1398 full_text_status: none publication: Energy volume: 21 number: 3 pagerange: 223-237 refereed: TRUE issn: 1873-6785 coversheets_dirty: FALSE fp7_type: info:eu-repo/semantics/article citation: Nakicenovic, N. ORCID: https://orcid.org/0000-0001-7176-4604 , Gilli, P.V., & Kurz, R. (1996). Regional and global exergy and energy efficiencies. Energy 21 (3) 223-237. 10.1016/0360-5442(96)00001-1 .