Lookup NU author(s): Dr Yaodong Wang,
Dr Elijah Chiremba,
Professor Tony Roskilly,
Dr Dawei Wu
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This study examined the performance and emission characteristics of a household size trigeneration based on a diesel engine generator fuelled with hydrogen comparing to that of single generation, cogeneration using ECLIPSE simulation software. In single generation simulation, the engine genset is used to produce electricity only and the heat from the engine is rejected to the atmosphere. In cogeneration and trigeneration, in addition to the electricity generated from the genset, the waste heat rejected from the hot exhaust gases and engine cooling system, is captured for domestic hot water supply using heat exchangers and hot water tank; and a part of the waste heat is used to drive absorption cooling in trigeneration. Comparisons have been made for the simulated results of these three modes of operation for hydrogen and diesel. The results prove that hydrogen is a potential energy vector in the future which is a key to meeting upcoming stringent greenhouse gases emissions. The study show that hydrogen has very good prospects to achieve a better or equal performance to conventional diesel fuel in terms of energetic performance, and a near zero carbon emission, depending on the life cycle analysis of the way the hydrogen is produced. The results also show enormous potential fuel savings and massive reductions in greenhouse gas emissions per unit of useful energy outputs with cogeneration and trigeneration compared with that of single generation. (c) 2011 Elsevier Ltd. All rights reserved.
Author(s): Wang YD, Huang Y, Chiremba E, Roskilly AP, Hewitt N, Ding YL, Wu DW, Yu HD, Chen XP, Li YP, Huang JC, Wang RZ, Wu JY, Xia ZZ, Tan CQ
Publication type: Article
Publication status: Published
Journal: Applied Energy
Print publication date: 20/01/2011
ISSN (print): 0306-2619
ISSN (electronic): 1872-9118
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