{"id":9198,"date":"2023-07-22T08:13:13","date_gmt":"2023-07-22T08:13:13","guid":{"rendered":"https:\/\/bostanchi.com\/service\/tunnel-and-metro-smoke-management-system\/"},"modified":"2023-11-19T09:28:06","modified_gmt":"2023-11-19T10:28:06","slug":"tunnel-and-metro-smoke-management","status":"publish","type":"service","link":"https:\/\/bostanchi.com\/en\/service\/tunnel-and-metro-smoke-management\/","title":{"rendered":"Tunnel and metro smoke management"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"9198\" class=\"elementor elementor-9198 elementor-4125\" data-elementor-post-type=\"service\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d108c62 e-flex e-con-boxed e-con e-parent\" data-id=\"d108c62\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c9570e2 elementor-widget elementor-widget-text-editor\" data-id=\"c9570e2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Ventilation of tunnels as a method for providing fresh air and exhausting gases from combustion in cars is very common. Even in metro tunnels where there are no combustion gases, the ventilation system is necessary in order to provide fresh air and also smoke evacuation in emergency conditions. There are different regulations for tunnel ventilation in different regions of the world. Different types of ventilation systems are also used regularly, but in the end, they all use two main types of fans, namely axial fans and jet fans. The basis of all the designs is the supply of fresh air from one part of the tunnel and its discharge from another part.<br \/> Jet fans in longitudinal systems by moving air from the air supply side to the discharge point cause the movement and discharge of pollution or smoke from the tunnel. In order to increase efficiency in the tunnel ventilation design, the amount of pollutants produced by cars or metro inside the tunnel should be calculated first. Then, having information such as the length of the tunnel and its conditions, he proceeded to choose the appropriate ventilation method.<br \/>These methods are:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-202c1f3 elementor-align-left elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"202c1f3\" data-element_type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 100 100\"><defs><style>.cls-1{fill:#2171b4;}.cls-2{fill:#179046;}<\/style><\/defs><path class=\"cls-1\" 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d=\"M92.78,45.52l-3.7-3.7A5.19,5.19,0,0,0,86.5,40.2a3.12,3.12,0,0,0-1.93.17,3.49,3.49,0,0,0,.3-1.92,6.12,6.12,0,0,0-1.7-2.78l-3.28-3.1A7.82,7.82,0,0,0,75.3,30c-1.41-.17-3,.56-4.72,2.3L55.79,47.07l-.17.17.12.2A5.12,5.12,0,0,1,56.35,50a5.86,5.86,0,0,1-.56,2.61l-.1.19L75,72.08l.21.21L92.9,54.65C94.47,53,95.2,51.51,95.14,50A7,7,0,0,0,92.78,45.52ZM87.85,50l-12.7,12.7-4-4L83.86,46Zm-8.47-8.47-12.7,12.7L62.45,50l12.7-12.64Z\"><\/path><path class=\"cls-1\" d=\"M52.78,55.7l-.19.08a6.07,6.07,0,0,1-5.17-.05l-.19-.1L32.34,70.58c-1.65,1.65-2.42,3.24-2.3,4.71a8,8,0,0,0,2.53,4.6l3.11,3.29a6,6,0,0,0,2.79,1.69,3.22,3.22,0,0,0,1.89-.3,3.31,3.31,0,0,0-.17,1.91,5.25,5.25,0,0,0,1.64,2.6l3.69,3.7A6.93,6.93,0,0,0,50,95.13h.18a6.61,6.61,0,0,0,4.46-2.24L72.08,75.42l.21-.21Zm9.95,19.45L50,87.85l-4-4,12.7-12.7Zm-8.47-8.47-12.7,12.7-4.24-4.23L50,62.44Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Natural ventilation<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 100 100\"><defs><style>.cls-1{fill:#2171b4;}.cls-2{fill:#179046;}<\/style><\/defs><path class=\"cls-1\" d=\"M67.43,20.05l-3.12-3.23a6.07,6.07,0,0,0-2.78-1.69,3.49,3.49,0,0,0-1.91.29,3.12,3.12,0,0,0,.19-1.89,5.19,5.19,0,0,0-1.64-2.61l-3.7-3.7A6.89,6.89,0,0,0,50,4.87c-1.49-.09-3,.66-4.64,2.23L27.86,24.58l-.21.21L47.08,44.21l.16.17.19-.12A5.19,5.19,0,0,1,50,43.65a5.86,5.86,0,0,1,2.61.56l.19.1L67.66,29.42c1.65-1.65,2.42-3.24,2.3-4.71S69,21.79,67.43,20.05Zm-4.76,4.8L50,37.56l-4.23-4.29,12.7-12.65ZM54,16.14,41.26,28.85l-4-4.05L50,12.15Z\"><\/path><path class=\"cls-2\" d=\"M43.64,50a5.12,5.12,0,0,1,.62-2.53l.11-.2L25,27.86l-.21-.21L7.1,45.35a6.28,6.28,0,0,0-2.23,4.57,6.88,6.88,0,0,0,2.35,4.56l3.7,3.7a5.29,5.29,0,0,0,2.58,1.63,3.19,3.19,0,0,0,1.92-.19,3.54,3.54,0,0,0-.29,1.93,6,6,0,0,0,1.7,2.72l3.28,3.1A7.63,7.63,0,0,0,24.71,70H25q2.09,0,4.4-2.31L44.15,52.92l.16-.15-.1-.19A5.86,5.86,0,0,1,43.64,50Zm-6.09,0-12.7,12.7-4.23-4.23,12.65-12.7Zm-8.71-8.71L16.14,54l-4-4,12.64-12.7Z\"><\/path><path class=\"cls-1\" d=\"M92.78,45.52l-3.7-3.7A5.19,5.19,0,0,0,86.5,40.2a3.12,3.12,0,0,0-1.93.17,3.49,3.49,0,0,0,.3-1.92,6.12,6.12,0,0,0-1.7-2.78l-3.28-3.1A7.82,7.82,0,0,0,75.3,30c-1.41-.17-3,.56-4.72,2.3L55.79,47.07l-.17.17.12.2A5.12,5.12,0,0,1,56.35,50a5.86,5.86,0,0,1-.56,2.61l-.1.19L75,72.08l.21.21L92.9,54.65C94.47,53,95.2,51.51,95.14,50A7,7,0,0,0,92.78,45.52ZM87.85,50l-12.7,12.7-4-4L83.86,46Zm-8.47-8.47-12.7,12.7L62.45,50l12.7-12.64Z\"><\/path><path class=\"cls-1\" d=\"M52.78,55.7l-.19.08a6.07,6.07,0,0,1-5.17-.05l-.19-.1L32.34,70.58c-1.65,1.65-2.42,3.24-2.3,4.71a8,8,0,0,0,2.53,4.6l3.11,3.29a6,6,0,0,0,2.79,1.69,3.22,3.22,0,0,0,1.89-.3,3.31,3.31,0,0,0-.17,1.91,5.25,5.25,0,0,0,1.64,2.6l3.69,3.7A6.93,6.93,0,0,0,50,95.13h.18a6.61,6.61,0,0,0,4.46-2.24L72.08,75.42l.21-.21Zm9.95,19.45L50,87.85l-4-4,12.7-12.7Zm-8.47-8.47-12.7,12.7-4.24-4.23L50,62.44Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Longitudinal ventilation through injection<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 100 100\"><defs><style>.cls-1{fill:#2171b4;}.cls-2{fill:#179046;}<\/style><\/defs><path class=\"cls-1\" d=\"M67.43,20.05l-3.12-3.23a6.07,6.07,0,0,0-2.78-1.69,3.49,3.49,0,0,0-1.91.29,3.12,3.12,0,0,0,.19-1.89,5.19,5.19,0,0,0-1.64-2.61l-3.7-3.7A6.89,6.89,0,0,0,50,4.87c-1.49-.09-3,.66-4.64,2.23L27.86,24.58l-.21.21L47.08,44.21l.16.17.19-.12A5.19,5.19,0,0,1,50,43.65a5.86,5.86,0,0,1,2.61.56l.19.1L67.66,29.42c1.65-1.65,2.42-3.24,2.3-4.71S69,21.79,67.43,20.05Zm-4.76,4.8L50,37.56l-4.23-4.29,12.7-12.65ZM54,16.14,41.26,28.85l-4-4.05L50,12.15Z\"><\/path><path class=\"cls-2\" d=\"M43.64,50a5.12,5.12,0,0,1,.62-2.53l.11-.2L25,27.86l-.21-.21L7.1,45.35a6.28,6.28,0,0,0-2.23,4.57,6.88,6.88,0,0,0,2.35,4.56l3.7,3.7a5.29,5.29,0,0,0,2.58,1.63,3.19,3.19,0,0,0,1.92-.19,3.54,3.54,0,0,0-.29,1.93,6,6,0,0,0,1.7,2.72l3.28,3.1A7.63,7.63,0,0,0,24.71,70H25q2.09,0,4.4-2.31L44.15,52.92l.16-.15-.1-.19A5.86,5.86,0,0,1,43.64,50Zm-6.09,0-12.7,12.7-4.23-4.23,12.65-12.7Zm-8.71-8.71L16.14,54l-4-4,12.64-12.7Z\"><\/path><path class=\"cls-1\" d=\"M92.78,45.52l-3.7-3.7A5.19,5.19,0,0,0,86.5,40.2a3.12,3.12,0,0,0-1.93.17,3.49,3.49,0,0,0,.3-1.92,6.12,6.12,0,0,0-1.7-2.78l-3.28-3.1A7.82,7.82,0,0,0,75.3,30c-1.41-.17-3,.56-4.72,2.3L55.79,47.07l-.17.17.12.2A5.12,5.12,0,0,1,56.35,50a5.86,5.86,0,0,1-.56,2.61l-.1.19L75,72.08l.21.21L92.9,54.65C94.47,53,95.2,51.51,95.14,50A7,7,0,0,0,92.78,45.52ZM87.85,50l-12.7,12.7-4-4L83.86,46Zm-8.47-8.47-12.7,12.7L62.45,50l12.7-12.64Z\"><\/path><path class=\"cls-1\" d=\"M52.78,55.7l-.19.08a6.07,6.07,0,0,1-5.17-.05l-.19-.1L32.34,70.58c-1.65,1.65-2.42,3.24-2.3,4.71a8,8,0,0,0,2.53,4.6l3.11,3.29a6,6,0,0,0,2.79,1.69,3.22,3.22,0,0,0,1.89-.3,3.31,3.31,0,0,0-.17,1.91,5.25,5.25,0,0,0,1.64,2.6l3.69,3.7A6.93,6.93,0,0,0,50,95.13h.18a6.61,6.61,0,0,0,4.46-2.24L72.08,75.42l.21-.21Zm9.95,19.45L50,87.85l-4-4,12.7-12.7Zm-8.47-8.47-12.7,12.7-4.24-4.23L50,62.44Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Semi-horizontal emptying system<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 100 100\"><defs><style>.cls-1{fill:#2171b4;}.cls-2{fill:#179046;}<\/style><\/defs><path class=\"cls-1\" d=\"M67.43,20.05l-3.12-3.23a6.07,6.07,0,0,0-2.78-1.69,3.49,3.49,0,0,0-1.91.29,3.12,3.12,0,0,0,.19-1.89,5.19,5.19,0,0,0-1.64-2.61l-3.7-3.7A6.89,6.89,0,0,0,50,4.87c-1.49-.09-3,.66-4.64,2.23L27.86,24.58l-.21.21L47.08,44.21l.16.17.19-.12A5.19,5.19,0,0,1,50,43.65a5.86,5.86,0,0,1,2.61.56l.19.1L67.66,29.42c1.65-1.65,2.42-3.24,2.3-4.71S69,21.79,67.43,20.05Zm-4.76,4.8L50,37.56l-4.23-4.29,12.7-12.65ZM54,16.14,41.26,28.85l-4-4.05L50,12.15Z\"><\/path><path class=\"cls-2\" 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d=\"M52.78,55.7l-.19.08a6.07,6.07,0,0,1-5.17-.05l-.19-.1L32.34,70.58c-1.65,1.65-2.42,3.24-2.3,4.71a8,8,0,0,0,2.53,4.6l3.11,3.29a6,6,0,0,0,2.79,1.69,3.22,3.22,0,0,0,1.89-.3,3.31,3.31,0,0,0-.17,1.91,5.25,5.25,0,0,0,1.64,2.6l3.69,3.7A6.93,6.93,0,0,0,50,95.13h.18a6.61,6.61,0,0,0,4.46-2.24L72.08,75.42l.21-.21Zm9.95,19.45L50,87.85l-4-4,12.7-12.7Zm-8.47-8.47-12.7,12.7-4.24-4.23L50,62.44Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"> All width empyting system<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" data-name=\"Layer 1\" viewBox=\"0 0 100 100\"><defs><style>.cls-1{fill:#2171b4;}.cls-2{fill:#179046;}<\/style><\/defs><path class=\"cls-1\" d=\"M67.43,20.05l-3.12-3.23a6.07,6.07,0,0,0-2.78-1.69,3.49,3.49,0,0,0-1.91.29,3.12,3.12,0,0,0,.19-1.89,5.19,5.19,0,0,0-1.64-2.61l-3.7-3.7A6.89,6.89,0,0,0,50,4.87c-1.49-.09-3,.66-4.64,2.23L27.86,24.58l-.21.21L47.08,44.21l.16.17.19-.12A5.19,5.19,0,0,1,50,43.65a5.86,5.86,0,0,1,2.61.56l.19.1L67.66,29.42c1.65-1.65,2.42-3.24,2.3-4.71S69,21.79,67.43,20.05Zm-4.76,4.8L50,37.56l-4.23-4.29,12.7-12.65ZM54,16.14,41.26,28.85l-4-4.05L50,12.15Z\"><\/path><path class=\"cls-2\" d=\"M43.64,50a5.12,5.12,0,0,1,.62-2.53l.11-.2L25,27.86l-.21-.21L7.1,45.35a6.28,6.28,0,0,0-2.23,4.57,6.88,6.88,0,0,0,2.35,4.56l3.7,3.7a5.29,5.29,0,0,0,2.58,1.63,3.19,3.19,0,0,0,1.92-.19,3.54,3.54,0,0,0-.29,1.93,6,6,0,0,0,1.7,2.72l3.28,3.1A7.63,7.63,0,0,0,24.71,70H25q2.09,0,4.4-2.31L44.15,52.92l.16-.15-.1-.19A5.86,5.86,0,0,1,43.64,50Zm-6.09,0-12.7,12.7-4.23-4.23,12.65-12.7Zm-8.71-8.71L16.14,54l-4-4,12.64-12.7Z\"><\/path><path class=\"cls-1\" d=\"M92.78,45.52l-3.7-3.7A5.19,5.19,0,0,0,86.5,40.2a3.12,3.12,0,0,0-1.93.17,3.49,3.49,0,0,0,.3-1.92,6.12,6.12,0,0,0-1.7-2.78l-3.28-3.1A7.82,7.82,0,0,0,75.3,30c-1.41-.17-3,.56-4.72,2.3L55.79,47.07l-.17.17.12.2A5.12,5.12,0,0,1,56.35,50a5.86,5.86,0,0,1-.56,2.61l-.1.19L75,72.08l.21.21L92.9,54.65C94.47,53,95.2,51.51,95.14,50A7,7,0,0,0,92.78,45.52ZM87.85,50l-12.7,12.7-4-4L83.86,46Zm-8.47-8.47-12.7,12.7L62.45,50l12.7-12.64Z\"><\/path><path class=\"cls-1\" d=\"M52.78,55.7l-.19.08a6.07,6.07,0,0,1-5.17-.05l-.19-.1L32.34,70.58c-1.65,1.65-2.42,3.24-2.3,4.71a8,8,0,0,0,2.53,4.6l3.11,3.29a6,6,0,0,0,2.79,1.69,3.22,3.22,0,0,0,1.89-.3,3.31,3.31,0,0,0-.17,1.91,5.25,5.25,0,0,0,1.64,2.6l3.69,3.7A6.93,6.93,0,0,0,50,95.13h.18a6.61,6.61,0,0,0,4.46-2.24L72.08,75.42l.21-.21Zm9.95,19.45L50,87.85l-4-4,12.7-12.7Zm-8.47-8.47-12.7,12.7-4.24-4.23L50,62.44Z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\"> Ventilation of subway tunnels and...<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4a8e76e e-flex e-con-boxed e-con e-parent\" data-id=\"4a8e76e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b548a04 elementor-widget elementor-widget-text-editor\" data-id=\"b548a04\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In order to domesticate the supply of Tehran metro fans, this company has performed a functional test (type test) for fans with a diameter of 2240, 2000 and 2500 mm in the laboratory approved by AMCA outside the country. After completing these tests, the company has provided F250 exhaust fans in line 7 of Tehran Metro.<br \/>By using SES and FDS software, Bostanchi industrial group is able to design and model a complete ventilation system for metro lines and tunnels.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1c94ca5 e-flex e-con-boxed e-con e-parent\" data-id=\"1c94ca5\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9df8b08 elementor-position-left elementor-view-default elementor-mobile-position-top elementor-widget elementor-widget-icon-box\" data-id=\"9df8b08\" data-element_type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-car\"><\/i>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tCar tunnel ventilation:\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tExamples of the tunnel ventilation system are presented below:\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5167c34 e-flex e-con-boxed e-con e-parent\" data-id=\"5167c34\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-8d3b3df e-con-full e-flex e-con e-child\" data-id=\"8d3b3df\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b6f7cb4 elementor-widget elementor-widget-heading\" data-id=\"b6f7cb4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">1. Natural ventilation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d52fa65 elementor-widget elementor-widget-image\" data-id=\"d52fa65\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"730\" height=\"92\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/1-2.jpg\" class=\"attachment-full size-full wp-image-4164\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/1-2.jpg 730w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/1-2-300x38.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/1-2-720x92.jpg 720w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/1-2-600x76.jpg 600w\" sizes=\"(max-width: 730px) 100vw, 730px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-96b5349 e-con-full e-flex e-con e-child\" data-id=\"96b5349\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-06422bf elementor-widget elementor-widget-heading\" data-id=\"06422bf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">2. Natural ventilation with a central shaft<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bcc5e88 elementor-widget elementor-widget-image\" data-id=\"bcc5e88\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"739\" height=\"158\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/2.jpg\" class=\"attachment-full size-full wp-image-4169\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/2.jpg 739w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/2-300x64.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/2-600x128.jpg 600w\" sizes=\"(max-width: 739px) 100vw, 739px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cb4eb1d e-flex e-con-boxed e-con e-parent\" data-id=\"cb4eb1d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-143e8f5 e-con-full e-flex e-con e-child\" data-id=\"143e8f5\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-def22e0 elementor-widget elementor-widget-heading\" data-id=\"def22e0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">3. Longitudinal injection type ventilation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b410f7f elementor-widget elementor-widget-image\" data-id=\"b410f7f\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"743\" height=\"184\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/3-1.jpg\" class=\"attachment-large size-large wp-image-4180\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/3-1.jpg 743w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/3-1-300x74.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/3-1-600x149.jpg 600w\" sizes=\"(max-width: 743px) 100vw, 743px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-455e303 e-con-full e-flex e-con e-child\" data-id=\"455e303\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40318d2 elementor-widget elementor-widget-heading\" data-id=\"40318d2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">4. Longitudinal ventilation with a central discharge shaft<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-062a260 elementor-widget elementor-widget-image\" data-id=\"062a260\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"739\" height=\"173\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/4.jpg\" class=\"attachment-full size-full wp-image-4171\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/4.jpg 739w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/4-300x70.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/4-600x140.jpg 600w\" sizes=\"(max-width: 739px) 100vw, 739px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-044dff6 e-flex e-con-boxed e-con e-parent\" data-id=\"044dff6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-9901a06 e-con-full e-flex e-con e-child\" data-id=\"9901a06\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d427069 elementor-widget elementor-widget-heading\" data-id=\"d427069\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">5. Longitudinal ventilation with central air supply and exhaust shafts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d9a09f2 elementor-widget elementor-widget-image\" data-id=\"d9a09f2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"230\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/5-1.jpg\" class=\"attachment-full size-full wp-image-4181\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/5-1.jpg 740w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/5-1-300x93.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/5-1-600x186.jpg 600w\" sizes=\"(max-width: 740px) 100vw, 740px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a077975 e-con-full e-flex e-con e-child\" data-id=\"a077975\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cd45bd6 elementor-widget elementor-widget-heading\" data-id=\"cd45bd6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">6. Longitudinal ventilation with point suction<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0240ccd elementor-widget elementor-widget-image\" data-id=\"0240ccd\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"677\" height=\"175\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/6-1.jpg\" class=\"attachment-full size-full wp-image-4182\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/6-1.jpg 677w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/6-1-300x78.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/6-1-600x155.jpg 600w\" sizes=\"(max-width: 677px) 100vw, 677px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9e1ff40 e-flex e-con-boxed e-con e-parent\" data-id=\"9e1ff40\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-b481d99 e-con-full e-flex e-con e-child\" data-id=\"b481d99\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa89d7a elementor-widget elementor-widget-heading\" data-id=\"fa89d7a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">7. Semi-horizontal emptying system<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4519661 elementor-widget elementor-widget-image\" data-id=\"4519661\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"744\" height=\"182\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/7.jpg\" class=\"attachment-full size-full wp-image-4174\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/7.jpg 744w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/7-300x73.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/7-600x147.jpg 600w\" sizes=\"(max-width: 744px) 100vw, 744px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2d88f92 e-con-full e-flex e-con e-child\" data-id=\"2d88f92\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5b3cb06 elementor-widget elementor-widget-heading\" data-id=\"5b3cb06\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">8. Semi-horizontal air supply system<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aa702bb elementor-widget elementor-widget-image\" data-id=\"aa702bb\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"739\" height=\"186\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/8.jpg\" class=\"attachment-full size-full wp-image-4175\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/8.jpg 739w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/8-300x76.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/8-600x151.jpg 600w\" sizes=\"(max-width: 739px) 100vw, 739px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0647a55 e-flex e-con-boxed e-con e-parent\" data-id=\"0647a55\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6243a92 e-con-full e-flex e-con e-child\" data-id=\"6243a92\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1810eaf elementor-widget elementor-widget-heading\" data-id=\"1810eaf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">9. Semi-transverse discharge system for equal supply and discharge<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f98d0a elementor-widget elementor-widget-image\" data-id=\"2f98d0a\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"732\" height=\"209\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/9-1.jpg\" class=\"attachment-full size-full wp-image-4193\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/9-1.jpg 732w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/9-1-300x86.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/9-1-600x171.jpg 600w\" sizes=\"(max-width: 732px) 100vw, 732px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1eb3e65 e-con-full e-flex e-con e-child\" data-id=\"1eb3e65\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d50aa1c elementor-widget elementor-widget-heading\" data-id=\"d50aa1c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">10. Full width system<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a4fd62d elementor-widget elementor-widget-image\" data-id=\"a4fd62d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"653\" height=\"213\" src=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/10.jpg\" class=\"attachment-full size-full wp-image-4194\" alt=\"\" srcset=\"https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/10.jpg 653w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/10-300x98.jpg 300w, https:\/\/bostanchi.com\/wp-content\/uploads\/2023\/07\/10-600x196.jpg 600w\" sizes=\"(max-width: 653px) 100vw, 653px\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"featured_media":12331,"parent":0,"menu_order":6,"template":"","format":"standard","meta":[],"cpt-category":[214],"class_list":["post-9198","service","type-service","status-publish","format-standard","has-post-thumbnail","hentry","cpt-category-design-ventilation-system-tunnel-smoke"],"_links":{"self":[{"href":"https:\/\/bostanchi.com\/en\/wp-json\/wp\/v2\/service\/9198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bostanchi.com\/en\/wp-json\/wp\/v2\/service"}],"about":[{"href":"https:\/\/bostanchi.com\/en\/wp-json\/wp\/v2\/types\/service"}],"version-history":[{"count":0,"href":"https:\/\/bostanchi.com\/en\/wp-json\/wp\/v2\/service\/9198\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bostanchi.com\/en\/wp-json\/wp\/v2\/media\/12331"}],"wp:attachment":[{"href":"https:\/\/bostanchi.com\/en\/wp-json\/wp\/v2\/media?parent=9198"}],"wp:term":[{"taxonomy":"cpt-category","embeddable":true,"href":"https:\/\/bostanchi.com\/en\/wp-json\/wp\/v2\/cpt-category?post=9198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}