{"id":1237,"date":"2023-03-15T11:58:56","date_gmt":"2023-03-15T11:58:56","guid":{"rendered":"https:\/\/wordpress-837908-2967703.cloudwaysapps.com\/?post_type=activity&#038;p=1237"},"modified":"2023-06-28T11:45:51","modified_gmt":"2023-06-28T11:45:51","slug":"dashboard-oven-2","status":"publish","type":"activity","link":"https:\/\/fairconditioning.org\/fc-activity\/activity\/dashboard-oven-2\/","title":{"rendered":"Dashboard Oven"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-2\">\n<div class=\"wp-block-column is-layout-flow\">\n<h5 class=\"wp-block-heading\">Objective<\/h5>\n\n\n\n<p>Glass being a poor conductor conducts heat slowly and releases heat slowly thereby trapping it\u00a0 much longer in an enclosed space &#8211; enough to bake cookies on a hot day.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Outcome<\/h5>\n\n\n\n<p>Students will comprehend the amount of radiant heat to be battled by air conditioners inside a glass building in order to cool occupants.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Requirements<\/h5>\n\n\n\n<p>A car parked nearby, infrared thermometer, tray, aluminium foil, readily available cookie dough.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Prerequisites<\/h5>\n\n\n\n<ul>\n<li>A conceptual knowledge of heat transfer processes.<\/li>\n\n\n\n<li>Knowledge of how to conduct temperature measurement using infrared thermometer.<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">Procedure<\/h5>\n\n\n\n<p><strong>Step 1. <\/strong>On a hot sunny day around 11 AM, take students to a car parked nearby , which is exposed to direct sunlight.<\/p>\n\n\n\n<p><strong>Step 2. <\/strong>Place the aluminium foil on the tray.<\/p>\n\n\n\n<p><strong>Step 3. <\/strong>Place cookie dough&#8217;s on the foil.<\/p>\n\n\n\n<p><strong>Step 4. <\/strong>Place the tray on the dashboard, beneath the windshield.<\/p>\n\n\n\n<p><strong>Step 5. <\/strong>With the help of an infrared thermometer, note the temperature reading of the tray for every 30 minute interval for 3 hours.<\/p>\n\n\n\n<p><strong>Step 6. <\/strong>After 3 hours, the cookies are ready to be served!<\/p>\n\n\n\n<p><strong>Step 7. <\/strong>Discuss&nbsp;<\/p>\n\n\n\n<ul>\n<li><strong> <\/strong>How the car can be compared to a glass building?<\/li>\n\n\n\n<li><strong> <\/strong>Glass being a poor conductor of heat, conducts heat slowly but once heat enters such an enclosed space, it makes it very difficult for heat to get dissipated<\/li>\n\n\n\n<li>Air within the enclosed space which also takes time to heat up, once it is heated, needs vents to dissipate<\/li>\n\n\n\n<li>In the absence of which, the space undergoes greenhouse effect and \u2018cooks\u2019 the occupants<\/li>\n\n\n\n<li>HVAC systems therefore in a glass building have to consume enormous energy to cool such spaces<\/li>\n\n\n\n<li>When prevention of this amount of heating by building better thermal sensible buildings is a better route.<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">Table<\/h5>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>         Time Interval<\/td><td>Temperature (\u2103)<\/td><\/tr><tr><td>Initial time<\/td><td><\/td><\/tr><tr><td>30 mins<\/td><td><\/td><\/tr><tr><td>30 mins<\/td><td><\/td><\/tr><tr><td>60 mins<\/td><td><\/td><\/tr><tr><td>90 mins<\/td><td><\/td><\/tr><tr><td>120 mins<\/td><td><\/td><\/tr><tr><td>150 mins<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"452\" height=\"254\" src=\"https:\/\/fairconditioning.org\/fc-activity\/wp-content\/uploads\/2023\/06\/Screenshot-2023-06-12-at-16.51.54.png\" alt=\"\" class=\"wp-image-2359\"\/><figcaption class=\"wp-element-caption\">Dashboard Oven<\/figcaption><\/figure>\n\n\n\n<h5 class=\"wp-block-heading\">References<\/h5>\n\n\n\n<p><a href=\"http:\/\/www.fairconditioning.org\/resources\/#126-module-ppts-1478947081\">Fairconditioning\u2019s Building Physics presentation:<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Objective Glass being a poor conductor conducts heat slowly and releases heat slowly thereby trapping it\u00a0 much longer in an enclosed space &#8211; enough to bake cookies on a hot day. Outcome Students will comprehend the amount of radiant heat to be battled by air conditioners inside a glass building in order to cool occupants. 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