{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T12:20:43Z","timestamp":1788351643124,"version":"build-2803163510"},"reference-count":34,"publisher":"American Chemical Society (ACS)","issue":"40","license":[{"start":{"date-parts":[[2020,9,30]],"date-time":"2020-09-30T00:00:00Z","timestamp":1601424000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/pubs.acs.org\/page\/policy\/authorchoice_termsofuse.html"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51874016"],"award-info":[{"award-number":["51874016"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,10,13]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>When a pipeline is under fire safety work construction, the stack effect of the pipeline will increase the diffusion rate of nitrogen, reduce the oxygen content, and cause asphyxia. To prove the influence of the stack effect of the pipeline on the nitrogen movement in the pipeline and put forward effective ventilation control measures, the formation mechanism, gas diffusion law, and ventilation parameters of the stack effect of the oil and gas pipelines are studied through theoretical derivation and numerical simulation. The results show that the nitrogen concentration at the height of the breathing zone in the hot zone first increases and then decreases along the axial distance. The larger the temperature difference, the faster the diffusion speed of nitrogen in the fire safety work area, and the lower the oxygen concentration. When the temperature difference increases to 30 \u00b0C, the maximum oxygen concentration in the work area is 0.177; to control the problem of low oxygen content caused by the stack effect, three ventilation schemes are put forward. Through the analysis that installing fans symmetrically on both sides, 4 m away from the pipe opening, can effectively reduce the stack effect intensity when the optimal working wind speed of the fan is 4 m\/s. The findings of this study can help in better understanding the causes of the chimney effect during pipeline fire safety work and provide theoretical basis for controlling personnel suffocation caused by the chimney effect.<\/jats:p>","DOI":"10.1021\/acsomega.0c03161","type":"journal-article","created":{"date-parts":[[2020,9,30]],"date-time":"2020-09-30T14:09:14Z","timestamp":1601474954000},"page":"25832-25840","source":"Crossref","is-referenced-by-count":0,"title":["Study on Gas Diffusion in Fire Working Areas of Oil\nand Gas Pipelines Based on Temperature Difference"],"prefix":"10.1021","volume":"5","author":[{"given":"Dengfeng","family":"Zheng","sequence":"first","affiliation":[{"name":"University of Science and Technology Beijing , , 30 Xueyuan Road , Haidian District, ,","place":["Beijing, China, 100083"]},{"name":"PetroChina West Pipeline Company , ,","place":["Urumqi, China, 830013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9733-8662","authenticated-orcid":true,"given":"Zhongan","family":"Jiang","sequence":"additional","affiliation":[{"name":"University of Science and Technology Beijing , , 30 Xueyuan Road , Haidian District, ,","place":["Beijing, China, 100083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Qu","sequence":"additional","affiliation":[{"name":"PetroChina West Pipeline Company , ,","place":["Urumqi, China, 830013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingxing","family":"Zhang","sequence":"additional","affiliation":[{"name":"PetroChina West Pipeline Company , ,","place":["Urumqi, China, 830013"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyan","family":"Hao","sequence":"additional","affiliation":[{"name":"University of Science and Technology Beijing , , 30 Xueyuan Road , Haidian District, ,","place":["Beijing, China, 100083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guoliang","family":"Zhang","sequence":"additional","affiliation":[{"name":"University of Science and Technology Beijing , , 30 Xueyuan Road , Haidian District, ,","place":["Beijing, China, 100083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiuzhu","family":"Wang","sequence":"additional","affiliation":[{"name":"University of Science and Technology Beijing , , 30 Xueyuan Road , Haidian District, ,","place":["Beijing, China, 100083"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1849-972X","authenticated-orcid":true,"given":"Yapeng","family":"Wang","sequence":"additional","affiliation":[{"name":"University of Science and Technology Beijing , , 30 Xueyuan Road , Haidian District, ,","place":["Beijing, China, 100083"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2020,9,30]]},"reference":[{"key":"2026090207535690600_cit1","first-page":"1","article-title":"Pressures differences\nfor a nine-story building as\na result of chimney effect and ventilation system operation","volume":"72","author":"Tamura","year":"1966","journal-title":"ASHRAE Trans."},{"key":"2026090207535690600_cit2","first-page":"1","article-title":"Pressure differences caused by chimney effect in tall\nbuildings","volume":"73","author":"Tamura","year":"1967","journal-title":"ASHRAE Trans"},{"key":"2026090207535690600_cit3","first-page":"73","article-title":"Experiment on the formation mechanism\nof chimney effect","volume":"36","author":"Zhang","year":"2006","journal-title":"J. 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