Kesharvani Sujeet, Katre Sakhi, Sahota Shivali, Dwivedi Gaurav, Verma Tikendra Nath, Lombardi Lidia
Energy Centre, Maulana Azad National Institute of Technology, Bhopal, 462003, India.
University Degli Niccolo Cusano, Rome, Italy.
Environ Sci Pollut Res Int. 2024 Aug 1. doi: 10.1007/s11356-024-34531-z.
The introduction of hydrogen into the engine could enhance its combustion efficiency and emission characteristics. The current study examines the attributes of compression ignition (CI) engines by introducing hydrogen into a biodiesel blend derived from algae. The improved thermal properties of hydrogen, when combined with algae biodiesel, significantly affect the performance, combustion, and emissions of dual-fuel engines. A study was conducted to evaluate the impact of hydrogen enrichment levels of 5%, 10%, 15%, and 20% of the nozzle volume on a biodiesel blend fuel. In comparison to diesel, algal biodiesel reduces emissions of unburned hydrocarbons (HC), carbon monoxide (CO), and oxygen (O) by 5.19%, 3.61%, and 2.83%, respectively, while increasing nitrogen oxide (NO) emissions by 4.73%. In contrast to biodiesel, diesel demonstrated superior brake thermal efficiency (BTE) and lower specific energy consumption (SEC). Injecting hydrogen into A blend fuel at volumes of 5%, 10%, 15%, and 20% results in a respective increase in brake thermal efficiency of 2.65%, 2.97%, 3.50%, and 4.15%. The addition of hydrogen gas to biodiesel blends further enhances their combustion qualities, leading to elevated peak cylinder pressure, temperature, and heat release rate. The results indicate that AH, AH, AH, and AH fuel reduced CO emissions by 3.75%, 8.75%, 12.5%, and 16.25%, respectively, compared to the A blend. In the same vein, HC emissions decreased by 5.76%, 10.29%, 15.52%, and 18.98%, respectively, as compared to A fuel. However, NO emissions rose by 5.36%, 10.20%, 15.28%, and 23.23%, respectively, for AH, AH, AH, and AH test fuels. Ultimately, the utilization of algal biodiesel and hydrogen enrichment in diesel engines was proven to substantially reduce pollutants while increasing efficiency. This study contributes valuable insights into the intersection of renewable fuels, hydrogen enrichment, and engine technology, with the potential to drive significant advancements in sustainable transportation and environmental conservation.
将氢气引入发动机可提高其燃烧效率和排放特性。当前的研究通过将氢气引入由藻类衍生的生物柴油混合物中来考察压燃式（CI）发动机的特性。氢气改善的热性能与藻类生物柴油相结合，会显著影响双燃料发动机的性能、燃烧和排放。开展了一项研究，以评估喷嘴体积的5%、10%、15%和20%的氢气富集水平对生物柴油混合燃料的影响。与柴油相比，藻类生物柴油分别使未燃烧碳氢化合物（HC）、一氧化碳（CO）和氧气（O）的排放降低了5.19%、3.61%和2.83%，同时使氮氧化物（NO）排放增加了4.73%。与生物柴油相比，柴油表现出更高的制动热效率（BTE）和更低的比能耗（SEC）。以5%、10%、15%和20%的体积向混合燃料中注入氢气，制动热效率分别相应提高了2.65%、2.97%、3.50%和4.15%。向生物柴油混合物中添加氢气进一步提高了其燃烧质量，导致气缸压力峰值、温度和热释放率升高。结果表明，与A混合燃料相比，AH、AH、AH和AH燃料的CO排放分别降低了3.75%、8.75%、12.5%和16.25%。同样，与A燃料相比，HC排放分别降低了5.76%、10.29%、15.52%和18.98%。然而，AH、AH、AH和AH测试燃料的NO排放分别增加了5.36%、10.20%、15.28%和23.23%。最终，事实证明在柴油发动机中使用藻类生物柴油和氢气富集可在提高效率的同时大幅减少污染物。这项研究为可再生燃料、氢气富集和发动机技术的交叉领域提供了有价值的见解，有可能推动可持续交通运输和环境保护取得重大进展。
