{"id":5717,"date":"2015-05-27T15:53:20","date_gmt":"2015-05-27T14:53:20","guid":{"rendered":"http:\/\/www.theoillamp.co.uk\/?p=5717"},"modified":"2015-05-27T15:53:20","modified_gmt":"2015-05-27T14:53:20","slug":"james-watts-steam-engine","status":"publish","type":"post","link":"https:\/\/www.theoillamp.co.uk\/?p=5717","title":{"rendered":"James Watt&#8217;s Steam engine"},"content":{"rendered":"<p><a href=\"https:\/\/www.theoillamp.co.uk\/wp-content\/uploads\/2015\/05\/Engine_watt.svg_.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-5726 size-medium\" title=\"&lt;a title=&quot;By MdeVicente (Own work) [CC0], via Wikimedia Commons&quot; href=&quot;http:\/\/commons.wikimedia.org\/wiki\/File%3AEngine_watt.svg&quot;&gt;&lt;img width=&quot;512&quot; alt=&quot;Engine watt&quot; src=&quot;\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/2\/22\/Engine_watt.svg\/512px-Engine_watt.svg.png&quot;\/&gt;&lt;\/a&gt;\" src=\"https:\/\/www.theoillamp.co.uk\/wp-content\/uploads\/2015\/05\/Engine_watt.svg_-291x300.png\" alt=\"Engine_watt.svg\" width=\"291\" height=\"300\" srcset=\"https:\/\/www.theoillamp.co.uk\/wp-content\/uploads\/2015\/05\/Engine_watt.svg_-291x300.png 291w, https:\/\/www.theoillamp.co.uk\/wp-content\/uploads\/2015\/05\/Engine_watt.svg_.png 512w\" sizes=\"auto, (max-width: 291px) 100vw, 291px\" \/><\/a>Its approximately 250 years (last week) since James Watt&#8217;s Steam engine was invented and with it the industrial revolution.\u00a0 James Watt&#8217;s Steam engine had a huge advantage that it used a separate condenser.\u00a0 Up until then the existing engines had one cylinder in which the water was heated up until steam which escaped to power a drive shaft.\u00a0 The heat exited and then the whole thing had to be heated up again.\u00a0 This made the whole process very ineffective.\u00a0 James Watt (out walking) came up with the more efficient process in his head.\u00a0 Apart from the above modification when the steam exited the separate condenser it produced a partial vacuum as the condenser cooled.\u00a0 This could be used to pull a piston into the condenser meaning this part of the process could also provide energy.\u00a0 In total the whole process was three times more efficient meaning coal went three times as far.\u00a0 James Watt&#8217;s Steam engine led to the industrial revolution which started in the UK.<\/p>\n<p>Obviously the industrial revolution has had mixed effects.\u00a0 The plus sides don&#8217;t need to be spelled out, least of all since you can read this blog!\u00a0 The minus sides include climate change, excessive materialism and and an unhealthy addiction to fossil fuels.<\/p>\n<p>Andy described the problem we face very well in our <a href=\"http:\/\/www.bookdepository.com\/No-Oil-Lamp-Andy-Mellen\/9780232529449\" target=\"_blank\">book<\/a>.<\/p>\n<p>&#8220;<em>One of the problems with using alternative energy sources is that most of them suffer a comparative disadvantage in energy density when measured against our current, very energy-rich sources of power. Only a few centuries ago, humankind was burning only<\/em><br \/>\n<em> wood and dung for energy, and using hand-labour and draught animals to do work (and of course in many parts of the world people are still doing this). As populations increased, agriculture and demand for firewood cleared the forests and the resulting shortage of wood led to people burning coal. As development continued, the immense energy needs of industrialisation and urbanisation were met by the use of more and more coal, then oil, and more recently gas and nuclear fuel. Each change of energy supply has been to a more concentrated energy source, with the carbon and nuclear fuels we currently use having a very high energy density.<\/em>&#8221;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Its approximately 250 years (last week) since James Watt&#8217;s Steam engine was invented and with it the industrial revolution.\u00a0 James Watt&#8217;s Steam engine had a huge advantage that it used a separate condenser.\u00a0 Up until then the existing engines had &hellip; <a href=\"https:\/\/www.theoillamp.co.uk\/?p=5717\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5717","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - 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