G. Espinosa, J. Golzarri, P. González-Mozuelos, B. E. Zendejas-Leal, E. López-Cruz, C. Vázquez López
{"title":"一种利用水蒸汽在Rn上非均相成核的室内氡缓释方法","authors":"G. Espinosa, J. Golzarri, P. González-Mozuelos, B. E. Zendejas-Leal, E. López-Cruz, C. Vázquez López","doi":"10.31349/suplrevmexfis.4.011005","DOIUrl":null,"url":null,"abstract":"This work presents a novel method for mitigating indoor radon, which consists of four steps: a) nucleation of water vapor around Rn atoms and Rn progenies, b) condensation of the mentioned clusters favored by a Peltier cooling process, c) accumulation of the resulting liquid, and d) discharging of the liquid outside. This system was proved in an underground cave with microclimate conditions (80 % relative humidity, 798-800 mbar atmospheric pressure, 20 ± 1 0C temperature, and an almost constant indoor Rn activity of 890 Bq/m3), in México City. The proposed method takes advantage of the natural formation of a system of Radon-Water (Rn-H2O) complexes, by van der Waals interactions. We have observed that by reducing the relative humidity by Peltier cooling, from 80 to 52%, a removal of radon is produced, from 607 to 165 Bq/m3, which is a very remarkable mitigation effect. Experimentally, the operation of the mitigation system in relative humidity environments between 30 and 80%, and between 40 and 1500 Bq/m3, is certified, always obtaining control of the desired intramural radon activity (100 Bq/m3), in less than 12 hours. This surpasses most of today’s commercial radon mitigation methods in efficiency, cost, time and ease, specifically in conditions where ventilation is not a reliable option.\n ","PeriodicalId":210091,"journal":{"name":"Suplemento de la Revista Mexicana de Física","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An indoor radon mitigation method by heterogeneous nucleation of H2O vapor on Rn favored by Peltier cooling\",\"authors\":\"G. Espinosa, J. Golzarri, P. González-Mozuelos, B. E. Zendejas-Leal, E. López-Cruz, C. Vázquez López\",\"doi\":\"10.31349/suplrevmexfis.4.011005\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This work presents a novel method for mitigating indoor radon, which consists of four steps: a) nucleation of water vapor around Rn atoms and Rn progenies, b) condensation of the mentioned clusters favored by a Peltier cooling process, c) accumulation of the resulting liquid, and d) discharging of the liquid outside. This system was proved in an underground cave with microclimate conditions (80 % relative humidity, 798-800 mbar atmospheric pressure, 20 ± 1 0C temperature, and an almost constant indoor Rn activity of 890 Bq/m3), in México City. The proposed method takes advantage of the natural formation of a system of Radon-Water (Rn-H2O) complexes, by van der Waals interactions. We have observed that by reducing the relative humidity by Peltier cooling, from 80 to 52%, a removal of radon is produced, from 607 to 165 Bq/m3, which is a very remarkable mitigation effect. Experimentally, the operation of the mitigation system in relative humidity environments between 30 and 80%, and between 40 and 1500 Bq/m3, is certified, always obtaining control of the desired intramural radon activity (100 Bq/m3), in less than 12 hours. This surpasses most of today’s commercial radon mitigation methods in efficiency, cost, time and ease, specifically in conditions where ventilation is not a reliable option.\\n \",\"PeriodicalId\":210091,\"journal\":{\"name\":\"Suplemento de la Revista Mexicana de Física\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-04-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Suplemento de la Revista Mexicana de Física\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.31349/suplrevmexfis.4.011005\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Suplemento de la Revista Mexicana de Física","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.31349/suplrevmexfis.4.011005","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An indoor radon mitigation method by heterogeneous nucleation of H2O vapor on Rn favored by Peltier cooling
This work presents a novel method for mitigating indoor radon, which consists of four steps: a) nucleation of water vapor around Rn atoms and Rn progenies, b) condensation of the mentioned clusters favored by a Peltier cooling process, c) accumulation of the resulting liquid, and d) discharging of the liquid outside. This system was proved in an underground cave with microclimate conditions (80 % relative humidity, 798-800 mbar atmospheric pressure, 20 ± 1 0C temperature, and an almost constant indoor Rn activity of 890 Bq/m3), in México City. The proposed method takes advantage of the natural formation of a system of Radon-Water (Rn-H2O) complexes, by van der Waals interactions. We have observed that by reducing the relative humidity by Peltier cooling, from 80 to 52%, a removal of radon is produced, from 607 to 165 Bq/m3, which is a very remarkable mitigation effect. Experimentally, the operation of the mitigation system in relative humidity environments between 30 and 80%, and between 40 and 1500 Bq/m3, is certified, always obtaining control of the desired intramural radon activity (100 Bq/m3), in less than 12 hours. This surpasses most of today’s commercial radon mitigation methods in efficiency, cost, time and ease, specifically in conditions where ventilation is not a reliable option.