Transactions on Environment, Energy and Earth Sciences最新文献_第2页

Evaluation model of light pollution level based on ID3 decision tree 基于 ID3 决策树的光污染等级评估模型

Transactions on Environment, Energy and Earth Sciences Pub Date : 2024-03-19 DOI: 10.62051/15xh9t18

Xin Wang, Xinshe Qi, Xinwei Gao, Cuicui Gao, Na Wang, Shasha Wu

引用次数: 0

Quantitative analysis of the influence of mine geological engineering on regional geological environment and research on sustainable development strategy 矿山地质工程对区域地质环境影响的定量分析及可持续发展战略研究

Transactions on Environment, Energy and Earth Sciences Pub Date : 2024-03-19 DOI: 10.62051/rj81hg60

Jiahui Huang

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Thermal Power Plants Hybrid Heat Supply Technology for Low-Temperature Heat Source Enhancement Economic Analysis 火力发电厂低温热源强化混合供热技术经济分析

Transactions on Environment, Energy and Earth Sciences Pub Date : 2024-03-19 DOI: 10.62051/jmc9c212

Haoran Xu, Chengan Jiang, Chengfei Xu, Yanni Jiang

{"title":"Thermal Power Plants Hybrid Heat Supply Technology for Low-Temperature Heat Source Enhancement Economic Analysis","authors":"Haoran Xu, Chengan Jiang, Chengfei Xu, Yanni Jiang","doi":"10.62051/jmc9c212","DOIUrl":"https://doi.org/10.62051/jmc9c212","url":null,"abstract":"To solve the defects of insufficient heating capacity and high energy cost in the traditional heating mode of the thermal power plant, two 300 MW pumped-condensing air-cooled heating units are retrofitted by adopting a high backpressure operation mode and utilizing the low-temperature heat source quality-improving hybrid heating technology. It is found that when the load is 210 MW and the operating back pressure is 45 kPa and 54 kPa after the retrofit, the consumption of standard coal for every 1 GJ of heat is 8.19 kg and 9.76 kg, which is 16.81 kg and 15.24 kg less than that of the traditional heat supply method. When the load is 250 MW and the operating back pressure is 45 kPa, the consumption of standard coal is 8.65 kg per GJ of heat supplied, which is 16.35 kg less than that of the traditional heating method. The ROI of the retrofit is 49.01%, with a payback period of about 2.04 years, after which it can bring an annual profit of 24.5504 million RMB per year to the power plant. It can reduce the emission of soot by 152.17 t, carbon dioxide by 82.17 t, sulfur dioxide by 258.68 t, and nitrogen oxides by 225.20 t per year. Therefore, this transformation is a green and efficient, energy-saving, and environmentally friendly technology with high economic returns and good prospects, providing a way of thinking about the new heating technology of the power plant.","PeriodicalId":517926,"journal":{"name":"Transactions on Environment, Energy and Earth Sciences","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140389265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rainfall simulation analysis of front windshield lower trim panel system based on SPH method 基于 SPH 方法的前挡风玻璃下装饰板系统降雨模拟分析

Transactions on Environment, Energy and Earth Sciences Pub Date : 2024-03-19 DOI: 10.62051/xzmjr618

Qingyun Guan, Chongzheng Wang, Yi Zhang, Lin Chen, Xiayi Yuan

引用次数: 0

Experimental Study on Solidification of Leachate Sludge with High Salt Content by Waste Incineration Bottom Slag 利用垃圾焚烧底渣固化高含盐渗滤液污泥的实验研究

Transactions on Environment, Energy and Earth Sciences Pub Date : 2024-03-19 DOI: 10.62051/a9g8gs87

Chao Zheng, Kangwei Xiong, Jilin Jiang, Nan Zhang

{"title":"Experimental Study on Solidification of Leachate Sludge with High Salt Content by Waste Incineration Bottom Slag","authors":"Chao Zheng, Kangwei Xiong, Jilin Jiang, Nan Zhang","doi":"10.62051/a9g8gs87","DOIUrl":"https://doi.org/10.62051/a9g8gs87","url":null,"abstract":"This paper takes the leachate sludge produced from the Guangzhou refuse landfill as the research object and selects sulfoaluminate cement as the fixation to solidify/stabilize the sludge. Meanwhile, bottom-slag is selected as the supplementary fixation. Through unconfined compressive strength test and Scanning electron microscope (SEM), the effect of the mixing amount of cement and bottom-slag on the sludge’s strength is systematically studied. Results show that sulfoaluminate cement can improve the strength of solidified sludge. Sulfoaluminate cement can increase the strength of samples by promoting the hydration reaction, but the effect is better when the content exceeds 40%. When the cement content is fixed, the strength of the sample increases with the bottom slag content. When the bottom slag content exceeds 10%, the proportion of cement in the hydration reaction will decrease, and then the strength of the sample will increase first and then decrease. In addition, under different cement contents, the sample will reach the peak value when the bottom slag content is 10%. Thus, 40% cement + 10% bottom slag is the relative optimal content. ","PeriodicalId":517926,"journal":{"name":"Transactions on Environment, Energy and Earth Sciences","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140389401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the Dilution/Crystallization of CL-20 by Microcalorimetry 通过微量热仪研究 CL-20 的稀释/结晶情况

Transactions on Environment, Energy and Earth Sciences Pub Date : 2024-03-19 DOI: 10.62051/ny1m2y96

Simin Zhu, Weiwei Ge, Liu Yang, Kaiqiang He

引用次数: 0