Abstract
Small distributed generation systems are currently attracting much attention because of their high energy utilization efficiency. Among them, a hybrid system based on micro gas turbine (μGT) and solid oxide fuel cell (SOFC) is expected to achieve much higher efficiency than a traditional μGT. In this paper, we investigate the effects of cycle design parameters on the performance and feasibility of a μGT-SOFC hybrid system for small apartments and businesses. As a result, a general design strategy is found that less direct fuel input to combustor as well as higher recuperator effectiveness leads to higher generation efficiency, while higher steam-carbon ratio moderates requirements for the material strength. It is also confirmed that the hybrid system is much superior to the recuperated gas turbine in terms of its power efficiency and aptitude for small distributed generation. A conceptual design of a 30kW μGT-SOFC hybrid system, of which diameter and height are 750mm and 1500mm, respectively, is shown to give power efficiency over 65% (LHV) in the best possible case.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International Joint Power Generation Conference |
| Pages | 521-530 |
| Number of pages | 10 |
| Volume | 2 |
| Publication status | Published - 2001 |
| Externally published | Yes |
| Event | 2001 International Joint Power Generation Conference - New Orleans, LA Duration: 2001 Jun 4 → 2001 Jun 7 |
Other
| Other | 2001 International Joint Power Generation Conference |
|---|---|
| City | New Orleans, LA |
| Period | 01/6/4 → 01/6/7 |
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ASJC Scopus subject areas
- Energy(all)
Cite this
Cycle analysis of gas turbine-fuel cell hybrid micro generation system. / Uechi, Hideyuki; Kimijima, Shinji; Kasagi, Nobuhide.
Proceedings of the International Joint Power Generation Conference. Vol. 2 2001. p. 521-530.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Cycle analysis of gas turbine-fuel cell hybrid micro generation system
AU - Uechi, Hideyuki
AU - Kimijima, Shinji
AU - Kasagi, Nobuhide
PY - 2001
Y1 - 2001
N2 - Small distributed generation systems are currently attracting much attention because of their high energy utilization efficiency. Among them, a hybrid system based on micro gas turbine (μGT) and solid oxide fuel cell (SOFC) is expected to achieve much higher efficiency than a traditional μGT. In this paper, we investigate the effects of cycle design parameters on the performance and feasibility of a μGT-SOFC hybrid system for small apartments and businesses. As a result, a general design strategy is found that less direct fuel input to combustor as well as higher recuperator effectiveness leads to higher generation efficiency, while higher steam-carbon ratio moderates requirements for the material strength. It is also confirmed that the hybrid system is much superior to the recuperated gas turbine in terms of its power efficiency and aptitude for small distributed generation. A conceptual design of a 30kW μGT-SOFC hybrid system, of which diameter and height are 750mm and 1500mm, respectively, is shown to give power efficiency over 65% (LHV) in the best possible case.
AB - Small distributed generation systems are currently attracting much attention because of their high energy utilization efficiency. Among them, a hybrid system based on micro gas turbine (μGT) and solid oxide fuel cell (SOFC) is expected to achieve much higher efficiency than a traditional μGT. In this paper, we investigate the effects of cycle design parameters on the performance and feasibility of a μGT-SOFC hybrid system for small apartments and businesses. As a result, a general design strategy is found that less direct fuel input to combustor as well as higher recuperator effectiveness leads to higher generation efficiency, while higher steam-carbon ratio moderates requirements for the material strength. It is also confirmed that the hybrid system is much superior to the recuperated gas turbine in terms of its power efficiency and aptitude for small distributed generation. A conceptual design of a 30kW μGT-SOFC hybrid system, of which diameter and height are 750mm and 1500mm, respectively, is shown to give power efficiency over 65% (LHV) in the best possible case.
UR - http://www.scopus.com/inward/record.url?scp=1242309834&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1242309834&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:1242309834
SN - 0791835359
VL - 2
SP - 521
EP - 530
BT - Proceedings of the International Joint Power Generation Conference
ER -