{"corpus_id":108777142,"paper_sha":"380ab3185ac02ddd385a2ac33fe4d37ea9309d5f","doi":"10.1016/J.FUEL.2019.03.091","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2923765543,"dblp_id":null,"acl_id":null,"title":"Experimental study on explosion characteristics of DME-blended LPG mixtures in a closed vessel","year":2019,"publication_date":"2019-06-07","venue":"Fuel","journal":{"name":"Fuel","pages":null,"volume":null},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Materials Science","Engineering"],"reference_count":44,"citation_count":32,"influential_citation_count":0,"is_open_access":true,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":"https://www.sciencedirect.com/science/article/am/pii/S001623611930465X","s2_open_access_landing_url":"https://www.semanticscholar.org/paper/380ab3185ac02ddd385a2ac33fe4d37ea9309d5f","s2_open_access_license":"publisher-specific-oa","s2_open_access_status":"BRONZE","pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Abstract Experiments were performed to study the explosion characteristics of DME-blended LPG mixtures with different DME contents and equivalence ratios using a closed vessel. The maximum explosion pressure (Pmax), the maximum rate of pressure rise (dP/dt)max and the propagation velocity of shock wave (v) were investigated. The results indicated that both the peak overpressure and peak rate of pressure rise were raised with increasing DME content, reaching peak values at the equivalence ratio of 1.2. Furthermore, it was found that slight incorporation of DME had a small effect on the explosion hazard, but as the ratio of DME to LPG/DME mixture exceeded 30%, the explosion hazard would increase dramatically. The propagation of the shock wave behind the obstacle was divided into three stages in this paper: initial acceleration, stable acceleration and decaying. In the propagation process, Pmax, (dP/dt)max and v first increased and then decreased along the pipeline, and the peak values often appeared in the stable acceleration stage. The peak overpressure and the maximum value of v also appeared in the same location approximately, indicating that the occurrence of maximum overpressure risk was often accompanied with the appearance of the most severe dynamic evolution.","claims":[{"public_id":"cl_7db090b309518024701950703e22bb78","status":"active","text":"Maximum explosion pressure, maximum rate of pressure rise, and shock-wave propagation velocity first increase and then decrease along the pipeline, with peak values usually appearing during the stable acceleration stage.","confidence":0.95,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_7db090b309518024701950703e22bb78"},{"public_id":"cl_aff83d5fd25d378bea008b69a0008c6c","status":"active","text":"Peak overpressure and peak rate of pressure rise increase with DME content and reach maximum values at an equivalence ratio of 1.2.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_aff83d5fd25d378bea008b69a0008c6c"},{"public_id":"cl_6598b5a776fe445bb900adfb2188f3d6","status":"active","text":"Shock-wave propagation behind the obstacle occurs in three stages: initial acceleration, stable acceleration, and decaying.","confidence":0.97,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_6598b5a776fe445bb900adfb2188f3d6"},{"public_id":"cl_e311a3760627b7fc8b0c8eb3dc67d94e","status":"active","text":"Slight incorporation of DME has only a small effect on explosion hazard, but when DME exceeds 30% of the DME/LPG mixture the explosion hazard increases dramatically.","confidence":0.96,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_e311a3760627b7fc8b0c8eb3dc67d94e"},{"public_id":"cl_7e9703470f935f4554d5b19d3af26c8c","status":"active","text":"The location of peak overpressure approximately coincides with the location of maximum shock-wave velocity, indicating that maximum overpressure risk is accompanied by the most severe dynamic evolution.","confidence":0.94,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_7e9703470f935f4554d5b19d3af26c8c"}],"concepts":[{"public_id":"co_242edefac99eab36bac08de25891a0a2","status":"active","name":"maximum rate of pressure rise","description":"The greatest rate at which pressure increases during the explosion, 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