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dc.contributor.authorSime, Richard Malcolm
dc.contributor.authorSime, Richard Malcolm
dc.date.accessioned2011-07-31T21:57:05Z
dc.date.available2011-07-31T21:57:05Z
dc.date.issued1998
dc.identifier.urihttp://hdl.handle.net/10179/2563
dc.description.abstractIntegrated gasification combined cycle systems (IGCC) are currently the most efficient (up to 40 % HHV) thermal method for the conversion of woody biomass to electricity. The production cost of electricity from IGCC is high, U.S. 6.6-8.2 ¢/kW.h (Graig and Mann, 1997). The capital costs alone are U.S. 3.2-4.5 ¢/kW.h. In New Zealand the wholesale price of electricity is typically less than U.S. 2.5 ¢/kW.h. The bottom line with current IGCC systems is that the capital cost must be greatly reduced if the technology is to be adopted for mainstream use. Methods to reduce the costs of all IGCC components should be investigated. The use of High Temperature & Pressure (HTP) downdraft technology as an alternative to the current fluidised bed technology could reduce the capital cost of the gasifier component of IGCC by 90%. The characteristics of the HTP downdraft are different from those of the traditional downdraft. A significant feature is that much larger throughputs are possible at gas turbine combustion pressures. The investigation of HTP downdraft technology is the focus of this thesis.en_US
dc.publisherMassey Universityen_US
dc.rightsThe Authoren_US
dc.subjectBiomas gasificationen_US
dc.subjectEnergy technologyen_US
dc.titleThe advancement of downdraft gasification : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Massey University, New Zealanden_US
dc.typeThesisen_US
thesis.degree.disciplineEngineering
thesis.degree.grantorMassey University
thesis.degree.levelDoctoral
thesis.degree.levelDoctoralen
thesis.degree.nameDoctor of Philosophy (Ph.D.)


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