Detail Mirrors in Glasshouses; Solar Heat for Oil Wells   Oleh:  [s.n] Jenis: Article from Bulletin/Magazine Dalam koleksi: The Economist (http://search.proquest.com/) vol. 400 no. 8746 (Aug. 2011), page 61-62. Topik: Oil Fields; Steam Power; Technology; Solar Energy Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: EE29.67 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel Using heat--in the form of steam--to liberate disobligingly thick and gunky oil which would otherwise stay in the ground is nothing new. Such enhanced-recovery techniques date back to the 1950s and 40% of California's oil production now depends on steaming subterranean rocks in this way. The steam, however, is made by burning other fossil fuels--normally natural gas--and because heating rock takes a lot of steam, making that steam takes a lot of money. It also adds to the oil's climate footprint. GlassPoint, a small Californian company, thinks it can make steam for oil recovery more cleanly and cheaply by using sunshine to do the heating. The steam used can be comparatively dirty. Nor does it have to be infernally hot. And even a small amount of it, added to an existing gas-based recovery process, can make a useful contribution. There are, though, disadvantages to having to work in an oilfield. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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