{"id":9115,"date":"2011-07-04T08:44:47","date_gmt":"2011-07-04T13:44:47","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/swansont\/?p=9115"},"modified":"2011-07-04T08:44:47","modified_gmt":"2011-07-04T13:44:47","slug":"ice-is-nice","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/swansont\/archives\/9115","title":{"rendered":"Ice is Nice"},"content":{"rendered":"<p><a href=\"http:\/\/www.wired.com\/wiredscience\/2011\/07\/how-much-ice-do-you-need-for-your-drinks\/\">How Much Ice Do You Need For Your Drinks?<\/a><\/p>\n<p>The Navy has an <a href=\"http:\/\/www.usno.navy.mil\/ice\">ice command<\/a>, and I assume its members always bring ice to parties simply because the partygoers assume they will, and would be angry if they didn&#8217;t.  Self-fulfillment.  Aka a feedback loop.<\/p>\n<p>Anyway, Rhett does the calculation of how much ice it takes to cool a drink down if you own an ideal cooler, and find that a 12 oz (355ml) can of water is cooled to 0\u00baC with just 100g of ice.  Being a responsible physicist, he does a reasonability check:<\/p>\n<blockquote><p>[I]f I have a 6 pack of drinks, I would need 600 grams of ice, a 12 pack would need 1.2 kg of ice. Yes, that seems small.  Remember this is the ideal case.<\/p><\/blockquote>\n<p>I like to look at this another way.  This tidbit stems from a NOVA show on getting things cold (<a href=\"http:\/\/www.pbs.org\/wgbh\/nova\/zero\/\">Absolute Zero<\/a>, which aired just before I started blogging \u2014 which explains why I can&#8217;t find a blog post on it) they explained how people used to ship ice to the tropics and made a big profit on it, and this was made possible because the amount of energy to melt a certain mass of ice was equal to the energy to subsequently heat it up to ~80\u00baC.  We can check this by dividing the latent heat of fusion (334 J\/g) by the specific heat (4.18 J\/g-K) and we get that answer.  Which means that freezing\/melting ice involves a LOT of energy compared to changing its temperature by a few degrees.  If 80\u00baC requires an equal mass, cooling by a quarter of that should require a quarter of the ice, plus a little for cooling the aluminum.  Which gives you the 100g\/can ideal case.  (I guess the true &#8220;ideal case&#8221; would then be 2.4 kg of ice)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How Much Ice Do You Need For Your Drinks? The Navy has an ice command, and I assume its members always bring ice to parties simply because the partygoers assume they will, and would be angry if they didn&#8217;t. Self-fulfillment. &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/swansont\/archives\/9115\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39],"tags":[],"class_list":["post-9115","post","type-post","status-publish","format-standard","hentry","category-physics"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/9115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/comments?post=9115"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/posts\/9115\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/media?parent=9115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/categories?post=9115"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/swansont\/wp-json\/wp\/v2\/tags?post=9115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}