IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v262y2023ipbs0360544222024471.html
   My bibliography  Save this article

Energy analysis and optimization of iso-octane and n-heptane combustion process

Author

Listed:
  • Wei, Jianan
  • Liu, Haifeng
  • Zhu, Hongyan
  • Cai, Yuqing
  • Wang, Hu
  • Yao, Mingfa

Abstract

The energy analysis and optimization were conducted under different boundary conditions for iso-octane and n-heptane constant volume self-ignition process from the view of energy (HR: Heat Release) and exergy (EL: Exergy Loss) of chemical reactions, which were classified into five series: LTO (Low Temperature Oxidation), H2O2 Loop, Fuel Fragment，H–O and CO–CO2. The results indicate that the HRR (Heat Release Rate) and ELR (Exergy Loss Rate) increase with initial temperature as well as the equivalence ratio increasing before a certain turning point of themselves, however, the decrease of HR and EL are mainly attributed to the shortening of the ignition process. From the view of temperature correspond to the HR/EL of reaction series, the T10 (the combustion temperature of 10% HR/EL released) and T50 of EL of each reaction series are always advanced those of HR, which means there is a conflict between enhancing HR and reducing EL. Considering the cost-effective reaction series, the α, a ratio of the quantity of EL under per unit HR of H2O2 Loop，H–O and CO–CO2 is smaller than that of Fuel Fragment or LTO. Hence, a RSC (Reaction path Segmentation Control) method is proposed for HR and EL control in terms of shifting equivalence ratio between 1500 and 2000K and leading the reactions to take along the optimal α from Fuel Fragment turning to H2O2 Loop，H–O and CO–CO2. The result of RSC method proves the small α by enhancing the high-temperature reactions of H2O2 Loop and CO–CO2 series to make up the reduction of Fuel Fragment series reactions, which results in a lower exergy loss of chemical reaction and turns the reduced part into thermomechanical exergy. In terms of RSC in engine, the process of spray combustion in engine involves the phenomenon that the equivalence ratio varies with the combustion. According to RSC, reducing the global equivalence ratio in the cylinder to strength the RSC transition of the mixture from rich to lean promotes the HRR of equivalence ratio 0.5–1.5 and extends its area, which improves the indicated thermal efficiency.

Suggested Citation

  • Wei, Jianan & Liu, Haifeng & Zhu, Hongyan & Cai, Yuqing & Wang, Hu & Yao, Mingfa, 2023. "Energy analysis and optimization of iso-octane and n-heptane combustion process," Energy, Elsevier, vol. 262(PB).
    • Handle: RePEc:eee:energy:v:262:y:2023:i:pb:s0360544222024471
    DOI: 10.1016/j.energy.2022.125561
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544222024471
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2022.125561?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Sun, Hongjie & Yan, Feng & Yu, Hao & Su, W.H., 2015. "Analysis of exergy loss of gasoline surrogate combustion process based on detailed chemical kinetics," Applied Energy, Elsevier, vol. 152(C), pages 11-19.
    2. Li, Yaopeng & Jia, Ming & Chang, Yachao & Kokjohn, Sage L. & Reitz, Rolf D., 2016. "Thermodynamic energy and exergy analysis of three different engine combustion regimes," Applied Energy, Elsevier, vol. 180(C), pages 849-858.
    3. Jeongwoo Song & Han Ho Song, 2020. "Analytical Approach to the Exergy Destruction and the Simple Expansion Work Potential in the Constant Internal Energy and Volume Combustion Process," Energies, MDPI, vol. 13(2), pages 1-24, January.
    4. Razmara, M. & Bidarvatan, M. & Shahbakhti, M. & Robinett, R.D., 2016. "Optimal exergy-based control of internal combustion engines," Applied Energy, Elsevier, vol. 183(C), pages 1389-1403.
    5. Li, Zilong & Zhang, Yaoyuan & Huang, Guan & Zhao, Wenbin & He, Zhuoyao & Qian, Yong & Lu, Xingcai, 2020. "Control of intake boundary conditions for enabling clean combustion in variable engine conditions under intelligent charge compression ignition (ICCI) mode," Applied Energy, Elsevier, vol. 274(C).
    6. Li, Yaopeng & Jia, Ming & Kokjohn, Sage L. & Chang, Yachao & Reitz, Rolf D., 2018. "Comprehensive analysis of exergy destruction sources in different engine combustion regimes," Energy, Elsevier, vol. 149(C), pages 697-708.
    7. Liu, Daojian & Wang, Hu & Liu, Haifeng & Zheng, Zunqing & Zhang, Yan & Yao, Mingfa, 2020. "Identification of factors affecting exergy destruction and engine efficiency of various classes of fuel," Energy, Elsevier, vol. 211(C).
    8. Knizley, Alta A. & Srinivasan, Kalyan K. & Krishnan, Sundar R. & Ciatti, Stephen A., 2012. "Fuel and diluent effects on entropy generation in a constant internal energy–volume (uv) combustion process," Energy, Elsevier, vol. 43(1), pages 315-328.
    9. Sciacovelli, A. & Verda, V. & Sciubba, E., 2015. "Entropy generation analysis as a design tool—A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 1167-1181.
    10. Li, Yaopeng & Jia, Ming & Liu, Yaodong & Xie, Maozhao, 2013. "Numerical study on the combustion and emission characteristics of a methanol/diesel reactivity controlled compression ignition (RCCI) engine," Applied Energy, Elsevier, vol. 106(C), pages 184-197.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Li, Cong & Xu, Wenbo & Wang, Yuqing & Jin, Yanke & Wei, Shanyang & Yang, Rui, 2023. "Analysis of internal energy and mass loss rate of fuel with water sublayer at different initial temperatures," Energy, Elsevier, vol. 283(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Zhang, Xuan & Wei, Jianan & Liu, Haifeng & Cai, Yuqing & Wang, Hu & Yao, Mingfa, 2024. "The relationship between fuel reactivity and exergy features in combustion process," Energy, Elsevier, vol. 288(C).
    2. Li, Yaopeng & Jia, Ming & Kokjohn, Sage L. & Chang, Yachao & Reitz, Rolf D., 2018. "Comprehensive analysis of exergy destruction sources in different engine combustion regimes," Energy, Elsevier, vol. 149(C), pages 697-708.
    3. Adriano da S. Marques & Monica Carvalho & Álvaro A. V. Ochoa & Ronelly J. Souza & Carlos A. C. dos Santos, 2020. "Exergoeconomic Assessment of a Compact Electricity-Cooling Cogeneration Unit," Energies, MDPI, vol. 13(20), pages 1-18, October.
    4. Wang, Buyu & Pamminger, Michael & Wallner, Thomas, 2019. "Impact of fuel and engine operating conditions on efficiency of a heavy duty truck engine running compression ignition mode using energy and exergy analysis," Applied Energy, Elsevier, vol. 254(C).
    5. Li, Yaopeng & Jia, Ming & Chang, Yachao & Kokjohn, Sage L. & Reitz, Rolf D., 2016. "Thermodynamic energy and exergy analysis of three different engine combustion regimes," Applied Energy, Elsevier, vol. 180(C), pages 849-858.
    6. Yao, Zhi-Min & Qian, Zuo-Qin & Li, Rong & Hu, Eric, 2019. "Energy efficiency analysis of marine high-powered medium-speed diesel engine base on energy balance and exergy," Energy, Elsevier, vol. 176(C), pages 991-1006.
    7. Ma, Baodong & Yao, Anren & Yao, Chunde & Wu, Taoyang & Wang, Bin & Gao, Jian & Chen, Chao, 2020. "Exergy loss analysis on diesel methanol dual fuel engine under different operating parameters," Applied Energy, Elsevier, vol. 261(C).
    8. Xu, Leilei & Bai, Xue-Song & Li, Yaopeng & Treacy, Mark & Li, Changle & Tunestål, Per & Tunér, Martin & Lu, Xingcai, 2020. "Effect of piston bowl geometry and compression ratio on in-cylinder combustion and engine performance in a gasoline direct-injection compression ignition engine under different injection conditions," Applied Energy, Elsevier, vol. 280(C).
    9. Li, Yaopeng & Jia, Ming & Han, Xu & Bai, Xue-Song, 2021. "Towards a comprehensive optimization of engine efficiency and emissions by coupling artificial neural network (ANN) with genetic algorithm (GA)," Energy, Elsevier, vol. 225(C).
    10. Mahabadipour, Hamidreza & Srinivasan, Kalyan K. & Krishnan, Sundar R., 2019. "An exergy analysis methodology for internal combustion engines using a multi-zone simulation of dual fuel low temperature combustion," Applied Energy, Elsevier, vol. 256(C).
    11. Chehrmonavari, Hamed & Kakaee, Amirhasan & Hosseini, Seyed Ehsan & Desideri, Umberto & Tsatsaronis, George & Floerchinger, Gus & Braun, Robert & Paykani, Amin, 2023. "Hybridizing solid oxide fuel cells with internal combustion engines for power and propulsion systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 171(C).
    12. Eyal, Amnon & Tartakovsky, Leonid, 2020. "Second-law analysis of the reforming-controlled compression ignition," Applied Energy, Elsevier, vol. 263(C).
    13. Halis, Serdar & Doğan, Battal, 2023. "Effects of intake air temperature on energy, exergy and sustainability analyses in an RCCI engine fueled with iso-propanol and n-heptane," Energy, Elsevier, vol. 284(C).
    14. Liu, Daojian & Wang, Hu & Liu, Haifeng & Zheng, Zunqing & Zhang, Yan & Yao, Mingfa, 2020. "Identification of factors affecting exergy destruction and engine efficiency of various classes of fuel," Energy, Elsevier, vol. 211(C).
    15. Mahabadipour, Hamidreza & Srinivasan, Kalyan K. & Krishnan, Sundar R., 2017. "A second law-based framework to identify high efficiency pathways in dual fuel low temperature combustion," Applied Energy, Elsevier, vol. 202(C), pages 199-212.
    16. Kale, Aneesh Vijay & Krishnasamy, Anand, 2023. "Experimental study of homogeneous charge compression ignition combustion in a light-duty diesel engine fueled with isopropanol–gasoline blends," Energy, Elsevier, vol. 264(C).
    17. Dettù, Federico & Pozzato, Gabriele & Rizzo, Denise M. & Onori, Simona, 2021. "Exergy-based modeling framework for hybrid and electric ground vehicles," Applied Energy, Elsevier, vol. 300(C).
    18. Liu, Junheng & Sun, Ping & Huang, He & Meng, Jian & Yao, Xiaohua, 2017. "Experimental investigation on performance, combustion and emission characteristics of a common-rail diesel engine fueled with polyoxymethylene dimethyl ethers-diesel blends," Applied Energy, Elsevier, vol. 202(C), pages 527-536.
    19. Khalili-Garakani, Amirhossein & Ivakpour, Javad & Kasiri, Norollah, 2016. "Evolutionary synthesis of optimum light ends recovery unit with exergy analysis application," Applied Energy, Elsevier, vol. 168(C), pages 507-522.
    20. Peng, Qingguo & E, Jiaqiang & Yang, W.M. & Xu, Hongpeng & Chen, Jingwei & Meng, Tian & Qiu, Runzhi, 2018. "Effects analysis on combustion and thermal performance enhancement of a nozzle-inlet micro tube fueled by the premixed hydrogen/air," Energy, Elsevier, vol. 160(C), pages 349-360.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:262:y:2023:i:pb:s0360544222024471. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.