{"id":538,"date":"2021-06-14T10:40:13","date_gmt":"2021-06-14T10:40:13","guid":{"rendered":"https:\/\/blogs.aalto.fi\/fire\/?page_id=538"},"modified":"2025-04-24T07:57:48","modified_gmt":"2025-04-24T07:57:48","slug":"liesipalo","status":"publish","type":"page","link":"https:\/\/blogs.aalto.fi\/fire\/liesipalo\/","title":{"rendered":"LIESIPALO &#8211; ignition, effects, and prevention of cooktop fires"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-543 aligncenter\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/06\/liesipalot_tunnus-300x150.png\" alt=\"\" width=\"300\" height=\"150\" srcset=\"https:\/\/blogs.aalto.fi\/fire\/files\/2021\/06\/liesipalot_tunnus-300x150.png 300w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/06\/liesipalot_tunnus-1024x512.png 1024w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/06\/liesipalot_tunnus-1536x768.png 1536w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/06\/liesipalot_tunnus-2048x1024.png 2048w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Liesipalo, cooktop fire, hob fire &#8211; is a common type of residential fires. This project aims at finding the reasons for their ignition, studying the consequences on indoor environment safety, and assessing ways of preventing or mitigating them.<\/p>\n<p>The project is funded by <a href=\"https:\/\/www.palosuojelurahasto.fi\/etusivu\">Palosuojelurahasto<\/a>.<\/p>\n<p><a href=\"http:\/\/blogs.aalto.fi\/fire\/files\/2016\/05\/psr.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-88 aligncenter\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2016\/05\/psr.png\" alt=\"\" width=\"129\" height=\"91\" \/><\/a><\/p>\n<h2>Publications<\/h2>\n<ol>\n<li>Simo Hostikka, Emmanuelle Castagnoli, Raimo Mikkola, Heidi Salonen, Tarique Jhatial, Rauli T\u00f6rr\u00f6, Rahul Kallada Janardhan, Marjaleena Aatamila, Juha Laitinen, Marko Hassinen, Pekka Toivanen, Kalle Kiviranta, Laura Kuurne, Tarja Ojala, Jukka Lepist\u00f6. <a href=\"https:\/\/urn.fi\/URN:ISBN:978-952-64-1803-2\">Liesipalojen syttyminen, vaikutukset ja ehk\u00e4isy. Aalto-yliopiston julkaisusarja TIEDE + TEKNOLOGIA 2\/2024.\u00a0<\/a><\/li>\n<li>Hostikka, S., Jhatial, T., Aatamila, M. Exploring the thermal characteristics, ignitions and heat release of oils and solid items at electric cooktops. Fire Safety J 140 (2023) 103889. <a href=\"https:\/\/doi.org\/10.1016\/j.firesaf.2023.103889\">https:\/\/doi.org\/10.1016\/j.firesaf.2023.103889<\/a><\/li>\n<li>Laura Kuurne, Tarja Ojala, Marjaleena Aatamila, Electric cooktop fire incidents in Finland, Fire Safety Journal 150,Part B (2024) 104283. <a href=\"https:\/\/doi.org\/10.1016\/j.firesaf.2024.104283\">https:\/\/doi.org\/10.1016\/j.firesaf.2024.104283<\/a><\/li>\n<\/ol>\n<h2>Theses<\/h2>\n<p>Jhatial, T. Thermal characterization of electric stoves. Aalto University. MSc Thesis. 2021. <a href=\"https:\/\/aaltodoc.aalto.fi\/handle\/123456789\/110494\">https:\/\/aaltodoc.aalto.fi\/handle\/123456789\/110494\u00a0<\/a><\/p>\n<h2>Conference presentations<\/h2>\n<ol>\n<li>Jhatial, T., Hostikka, S. Thermal characterization of electric cooktops. Palotutkimuksen p\u00e4iv\u00e4t 2021. Pelastustieto, Palotutkimuksen p\u00e4ivien erikoisnumero, s. 113-117. Palo- ja pelastustieto. <a href=\"https:\/\/www.spek.fi\/wp-content\/uploads\/2021\/08\/PTP_2021.pdf\">https:\/\/www.spek.fi\/wp-content\/uploads\/2021\/08\/PTP_2021.pdf<\/a>.<\/li>\n<li>Ojala, T. (2021). Turvatekniikka ja liesipalojen ehk\u00e4isy. Teoksessa: Puustinen, Alisa 2021 (toim.). Pelastus- ja turvallisuustutkimuksen vuosikirja 2021, s. 8\u201327. Pelastusopiston julkaisu, D-sarja: Muut julkaisut 1\/2021. Pelastusopisto, Kuopio. <a href=\"http:\/\/info.smedu.fi\/kirjasto\/Sarja_D\/D1_2021.pdf\">http:\/\/info.smedu.fi\/kirjasto\/Sarja_D\/D1_2021.pdf<\/a>.<\/li>\n<li>Lepist\u00f6, J. &amp; Kuurne, L. &amp; Ojala, T. (2021). Liesipalojen kokonaiskuva ja liesiturvallisuutta vaarantavat tekij\u00e4t. Palotutkimuksen p\u00e4iv\u00e4t 2021. Pelastustieto, Palotutkimuksen p\u00e4ivien erikoisnumero, s. 8-12. Palo- ja pelastustieto. <a href=\"https:\/\/www.spek.fi\/wp-content\/uploads\/2021\/08\/PTP_2021.pdf\">https:\/\/www.spek.fi\/wp-content\/uploads\/2021\/08\/PTP_2021.pdf<\/a>.<\/li>\n<li>Castagnoli, E., Mikkola, R., T\u00f6rr\u00f6, R., Kallada Janardhan, R., Hostikka, S., Salonen, H. Chemical exposure from overheated food in a test kitchen. Indoor Air 2022, June 12-16, 2022, Kuopio.<\/li>\n<li>Hostikka, S. Liesipalot. Ekotehokkaan rakentamisen ja talotekniikan yhteisty\u00f6tapaaminen. 27.1.2022.<\/li>\n<li>Hostikka, S., Castagnoli, E., Kallada Janardhan, R., T\u00f6rr\u00f6, R., Jhatial, T., Mikkola, R., Salonen, H. Production of heat and harmful products from cooktop fires and overheated materials. Nordic Fire and Safety Days 2022, June 21-22, 2022. Lund.<\/li>\n<li>Kuurne, L., Lepist\u00f6, J., Ojala, T. The overall picture of stove fire incidents in Finland and factors endangering stove safety. Nordic Fire and Safety Days 2022, June 21-22, 2022. Lund.<\/li>\n<li>Hostikka, S. Liesipalojen syttyminen, vaikutukset ja ehk\u00e4isy. Paloseminaari 2023. Rakennusteollisuus. Helsinki. 7.2.2023<\/li>\n<li>Laitinen J., Aatamila, M. Tutkimustietoa palojen aiheuttamista kemiallisista altistumisista. Pelastuslaitosten ilmoitusmenettelyt ja viranomaisyhteisty\u00f6 palojen tutkinnassa -hankkeen webinaari 20.4.2023 (<em>tulossa<\/em>)<\/li>\n<li>Aatamila, M., Hassinen, M., Toivanen, P., Kiviranta, K., Laitinen J. Asumisterveys huoneistossa, kemialliset altisteet ja niiden v\u00e4hent\u00e4minen liesipalotilanteen j\u00e4lkeen. Palotutkimuksen p\u00e4iv\u00e4t 2023.<\/li>\n<li>Hostikka, S., Jhatial, T., Aatamila, M., Toivanen, P., Kiviranta, K., Hassinen, M. Liesipalojen syttyminen ja paloteho \u2013 laboratoriokokeet. Palotutkimuksen p\u00e4iv\u00e4t 2023.<\/li>\n<li>Hostikka, S., Castagnoli, E., Mikkola, R., T\u00f6rr\u00f6, R., Kallada Janardhan, R., Salonen, H., Haitallisten aineiden syntyminen ja tuuletus liesipaloissa \u2013 laboratoriokokeet. Palotutkimuksen p\u00e4iv\u00e4t 2023.<\/li>\n<li>Hostikka, S. Fire ignition on electric cooktops. Aalto Family Day, 10.9.2022.<\/li>\n<\/ol>\n<h2>Research results<\/h2>\n<h3>WP 2: Thermal characterization<\/h3>\n<p>Thermal characterization of three types of electric stoves were performed using thermocouples, IR camera, and Hukseflux SBG01 heat flux gauge.<\/p>\n<p><a href=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/Setup.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-556\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/Setup-200x300.png\" alt=\"\" width=\"200\" height=\"300\" srcset=\"https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/Setup-200x300.png 200w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/Setup.png 224w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a><\/p>\n<p>These results are, of course, specific to the particular cooktop models, but some general observations can be made:<\/p>\n<ul>\n<li>Glass ceramic and induction cooktops are faster than electric coil.<\/li>\n<li>Induction cooktop had a safety feature that limited the peak temperatures of cast iron and carbon steel pans lower than at other cooktops.<\/li>\n<li>Aluminum pan peak temperatures were lower than cast iron and carbon steel pans at all cooktops.<\/li>\n<\/ul>\n<h3>WP2: Ignition tests<\/h3>\n<p>Ignition tests were carried out for different food and kitchen materials.<\/p>\n<p><a href=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210610_125121_rsize.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-555\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210610_125121_rsize-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210610_125121_rsize-300x225.jpg 300w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210610_125121_rsize-1024x768.jpg 1024w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210610_125121_rsize-1536x1152.jpg 1536w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210610_125121_rsize.jpg 2000w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>In addition, the heat release rates were measured using the oxygen consumption calorimetry.<\/p>\n<p><a href=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210910_120712_rsize.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-552\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210910_120712_rsize-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210910_120712_rsize-300x225.jpg 300w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/09\/IMG_20210910_120712_rsize.jpg 1012w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><br \/>\n<em>Measurement of sunflower oil heat release rate on aluminum pan and ceramic glass cooktop. Photo: Simo Hostikka<\/em><\/p>\n<p><a href=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/LIESI_WP3-0015.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-563\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/LIESI_WP3-0015-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/LIESI_WP3-0015-300x225.jpg 300w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/LIESI_WP3-0015.jpg 733w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/aalto.cloud.panopto.eu\/Panopto\/Pages\/Viewer.aspx?id=d049bbef-8674-4329-b7bf-adc7012a3bcc\">IR video 1<\/a> : 23 g of sunflower oil vaporizes from a pan, creating a foaming char.<\/p>\n<p><a href=\"https:\/\/aalto.cloud.panopto.eu\/Panopto\/Pages\/Viewer.aspx?id=9766a54f-10d5-4bf6-b4e7-adc900ef8349\">IR video 2<\/a>: 10 x 10 cm2 version of a pizza box heated and ignites (Warning: temperature scale not calibrated)<\/p>\n<p><a href=\"https:\/\/aalto.cloud.panopto.eu\/Panopto\/Pages\/Viewer.aspx?id=6466ae1c-f9cb-4ffe-82ec-add5007eb2f1\">IR video 3<\/a>: 23 g canola oil in cast iron pan, ignites to flaming.<\/p>\n<h3>WP 3: Indoor health<\/h3>\n<p>Third series of tests examines the effect of small kitchen fires and burned food on the indoor air quality. For this study, we built a 2 x 2 x 2.5 m3 room with mechanical ventilation.<\/p>\n<p><a href=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/WP3_Room.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-577\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/WP3_Room-300x200.jpg\" alt=\"\" width=\"366\" height=\"244\" srcset=\"https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/WP3_Room-300x200.jpg 300w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/WP3_Room-1024x683.jpg 1024w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/WP3_Room.jpg 1500w\" sizes=\"auto, (max-width: 366px) 100vw, 366px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/aalto.cloud.panopto.eu\/Panopto\/Pages\/Viewer.aspx?id=10e518f3-8f3b-4f3f-b83c-adc900d76fa0\">VIDEO<\/a>: Paper towel roll (15 min min test, 50 x speed-up)<\/p>\n<p>Two pieces of sausage in a pan:<\/p>\n<p><a href=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/RT02_smoke-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-565\" src=\"http:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/RT02_smoke-300x225.jpg\" alt=\"\" width=\"367\" height=\"275\" srcset=\"https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/RT02_smoke-300x225.jpg 300w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/RT02_smoke-1024x768.jpg 1024w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/RT02_smoke-1536x1152.jpg 1536w, https:\/\/blogs.aalto.fi\/fire\/files\/2021\/10\/RT02_smoke-2048x1536.jpg 2048w\" sizes=\"auto, (max-width: 367px) 100vw, 367px\" \/><\/a><\/p>\n<p><span class=\"author vcard\">Posted by Simo Hostikka<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Liesipalo, cooktop fire, hob fire &#8211; is a common type of residential fires. This project aims at finding the reasons for their ignition, studying the consequences on indoor environment safety, and assessing ways of preventing or mitigating them. The project &hellip; <a href=\"https:\/\/blogs.aalto.fi\/fire\/liesipalo\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2422,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-538","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/pages\/538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/users\/2422"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/comments?post=538"}],"version-history":[{"count":27,"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/pages\/538\/revisions"}],"predecessor-version":[{"id":694,"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/pages\/538\/revisions\/694"}],"wp:attachment":[{"href":"https:\/\/blogs.aalto.fi\/fire\/wp-json\/wp\/v2\/media?parent=538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}