Modeling and Control Design of a SOFC-IC Engine Hybrid System

Chaudhari, Anita; Plianos, Alexandros; Stobart, Richard

doi:10.4271/2008-01-0082

Cited by 4 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the reviewed hybrid systems operated mostly on NG, as was observed in all, 7,13,18,22,25,26,[31][32][33][34][35][37][38][39][40][41] and across a variety of mixture concentrations. Moreover, hydrogen was examined in dual fuel operation with diesel, 21 as was methanol. 11,42 Additionally, gasoline was used 36 whereas gasified woody biomass syngas was considered by Moriconi et al, 43 in increasing carbon content sequence.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Within the study's experimental framework, a modified Honda GX390 was deployed, at which a number of measurements were obtained for more than one fuel-air equivalence ratio (f), accounting for the change in load conditions, based to aforementioned anode tailgas features. Particularly, experiments indicated that gross indicated fuel conversion efficiency 21 -----Chaudhari et al 42 -----Park et al 26 -----Moriconi et al 43 -----Fyffe et al 7 --29.9-31.8 (n) --Luo et al 40 -----Kang and Ahn 22 -----Luo et al 41 -----Choi et al 31 -25-30 (g) --Oh and Song 25 --1.5-5 (g) --Lee et al 32 -----Chuahy and Kokjohn 13 48.8 (g) -9.4 (g) --48.2 (g) -9.5 (g) --Choi et al 33 25.1 (n) ----Wu et al 34 -----Choi and Song 35 -----Ran et al 37 - (h f, ig ) could reach 25% to 30%, while resulting NO x would be less than 5 ppm (@ O 2 15%). The combustion was justifiably stable, since the COV of gross indicated mean effective pressure (IMEP g ) was again in the neighborhood of 5%.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The latter complemented PSOFC/ GT and PSOFC/GT/steam turbine (ST) subsystems with ICE subconfigurations, in an effort to assess whether the 70% threshold of energy efficiency could be surpassed in transportation-scale ICE hybridization. The highest performing system was investigated after 21 ------Chaudhari et al 42 ------Park et al 26 ------Moriconi et al 43 ------Fyffe et al 7 --40 ---Luo et al 40 ------Kang and Ahn 22 ------Luo et al 41 ------Choi et al 31 ---\ 5 ppm 1000-2000 pm -Oh and Song 25 ------Lee et al 32 - iterative simulations in the developed thermodynamic models, while the work produced at the ICE would account for 7% out of the total produced work. The PSOFC stack on the other hand, would produce the largest respective proportions at 61%.…”

Section: Literature Reviewmentioning

confidence: 99%

“…13 On top of the aforementioned modes of operation, additional dual fuel regimes were introduced across a number of research articles, in the same framework of hybrid integration between ICE and SOFC. Chaudhari et al 21 modeled a dynamic PSOFC/ICE hybrid application in MATLAB Simulink, in which the anode tailgas would be intercooled prior to the turbocharged 4-cylinder engine direction. At the same time, diesel would additionally be directly injected in a dual fuel scheme.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In turn, it is exploited in order to raise system efficiency, with a multitude of ways being reported. It could either be combusted in the aforementioned ICE components, 21 preheat incoming anode fuel feed or auxiliary water streams directed to the reformer, 22 and provide amounts of heat wherever required, as in reforming reactions, or in-between them combinations. Moreover, the absence of any intermittency issues, linked to popular renewable energy (RE) technologies, such as wind turbines (WTs) and photovoltaic (PV) panels, are being dealt with hybridization with SOFC subsystems.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Investigating realistic anode off-gas combustion in SOFC/ICE hybrid systems: mini review and experimental evaluation

Nikiforakis

Ran

Sprengel³

et al. 2021

International Journal of Engine Research

View full text Add to dashboard Cite

Solid oxide fuel cells (SOFCs) have been deployed in hybrid decentralized energy systems, in which they are directly coupled to internal combustion engines (ICEs). Prior research indicated that the anode tailgas exiting the SOFC stack should be additionally exploited due to its high energy value, with typical ICE operation favoring hybridization due to matching thermodynamic conditions during operation. Consequently, extensive research has been performed, in which engines are positioned downstream the SOFC subsystem, operating in several modes of combustion, with the most prevalent being homogeneous compression ignition (HCCI) and spark ignition (SI). Experiments were performed in a 3-cylinder ICE operating in the latter modus operandi, where the anode tailgas was assimilated by mixing syngas (H2: 33.9%, CO: 15.6%, CO2: 50.5%) with three different water vapor flowrates in the engine’s intake. While increased vapor content significantly undermined engine performance, brake thermal efficiency (BTE) surpassed 34% in the best case scenario, which outperformed the majority of engines operating under similar operating conditions, as determined from the conducted literature review. Nevertheless, the best performing application was identified operating under HCCI, in which diesel reformates assimilating SOFC anode tailgas, fueled a heavy duty ICE (17:1), and gross indicated thermal efficiency ([Formula: see text]) of 48.8% was achieved, with the same engine exhibiting identical performance when operating in reactivity-controlled compression ignition (RCCI). Overall, emissions in terms of NOx and CO were minimal, especially in SI engines, while unburned hydrocarbons (UHC) were non-existent due to the absence of hydrocarbons in the assessed reformates.

show abstract