1 00:28:14,460 --> 00:28:15,420 Hello again 2 00:28:16,040 --> 00:28:18,380 in this video in the series of renewable energy we're going to talk 3 00:28:18,380 --> 00:28:21,860 about geothermal as it suggests geo, 4 00:28:21,860 --> 00:28:24,900 the planet thermal heat energy. 5 00:28:25,640 --> 00:28:28,820 Now the planet is covered in what's called tectonic plates 6 00:28:28,920 --> 00:28:30,840 and on the edge of these tectonic plates. 7 00:28:30,840 --> 00:28:34,460 Either you have subduction zones where the crust of the Earth 8 00:28:35,040 --> 00:28:40,460 goes underneath itself and goes back in to the core and melt. 9 00:28:40,460 --> 00:28:46,380 There are places where magma erupts, spreads and forms new land. 10 00:28:46,440 --> 00:28:49,140 There's one down the middle of the Atlantic Ocean 11 00:28:49,140 --> 00:28:53,660 this fault line, as they're called, runs up to Iceland. 12 00:28:53,960 --> 00:28:58,220 Now, Iceland has hot springs it has geysers. 13 00:28:58,220 --> 00:29:02,040 It is very volcanically active with volcanism 14 00:29:02,240 --> 00:29:05,940 comes freebees, comes heat, comes hot water 15 00:29:05,940 --> 00:29:08,720 it is one of the best ways 16 00:29:09,200 --> 00:29:13,500 that a country that is anywhere near a fault line 17 00:29:14,640 --> 00:29:16,240 or where the geo thermal 18 00:29:16,240 --> 00:29:19,920 energy of this planet comes within reach of us on the surface. 19 00:29:20,880 --> 00:29:24,680 Basically, all you're doing is using the heat of the planet itself 20 00:29:25,100 --> 00:29:27,580 to turn water into steam. 21 00:29:28,100 --> 00:29:30,320 That steam then drives a turbine, 22 00:29:30,780 --> 00:29:35,380 which in turn turns a generator, which in turn produces electricity. 23 00:29:35,380 --> 00:29:36,340 Happy days. 24 00:29:36,340 --> 00:29:39,740 It is free completely, totally and utterly free. 25 00:29:40,200 --> 00:29:42,960 Now there's one problem with this. 26 00:29:42,960 --> 00:29:45,800 Not everybody has an active fault line. 27 00:29:46,980 --> 00:29:50,420 Iceland use it quite a lot. 28 00:29:50,420 --> 00:29:55,140 Their power generation system is now leaning towards geothermal 29 00:29:55,140 --> 00:29:58,220 on a massive scale in other countries 30 00:29:58,220 --> 00:30:01,280 where there is a subduction zone, a fault line 31 00:30:01,540 --> 00:30:07,920 or a route to the natural, naturally occurring heat within the planet. 32 00:30:07,940 --> 00:30:11,940 Now this heat is produced by gravity 33 00:30:12,380 --> 00:30:16,240 compressing the inside of the planet, the pressure in their heats up the 34 00:30:17,440 --> 00:30:20,300 internal materials within the planet Earth itself. 35 00:30:20,660 --> 00:30:25,580 Also, there is degradation of nuclear radioactive material. 36 00:30:25,580 --> 00:30:30,340 So uranium, obviously as time goes on, degrades. 37 00:30:30,340 --> 00:30:32,360 But it gets hot. It forms heat. 38 00:30:32,660 --> 00:30:34,880 So you have got the heat 39 00:30:35,460 --> 00:30:37,680 produced by decaying radioactive material. 40 00:30:38,120 --> 00:30:41,180 You have the heat produced because of the natural pressures 41 00:30:41,860 --> 00:30:44,140 within the planet itself. 42 00:30:44,140 --> 00:30:46,420 You do not have to pay for any of that. 43 00:30:46,420 --> 00:30:48,800 So go to Iceland, 44 00:30:48,800 --> 00:30:51,920 get yourself a pipe, stick it in the ground, 45 00:30:52,380 --> 00:30:55,700 pump water around it that water turns to steam because of the pressure 46 00:30:55,700 --> 00:30:58,860 and the heat, comes back up the pipe at high pressure. 47 00:30:59,580 --> 00:31:02,860 Straight through the turbine spins a turbine. 48 00:31:02,860 --> 00:31:06,300 Switch your kettle on, you have just boiled 49 00:31:06,300 --> 00:31:10,400 your kettle from the energy released within the planet itself. 50 00:31:10,780 --> 00:31:14,240 This is one that does not depend on the Sun. 51 00:31:14,460 --> 00:31:18,020 Most energy systems we use are solar dependent. 52 00:31:18,400 --> 00:31:22,160 Even to the point of fossil fuels sounds very silly. 53 00:31:23,100 --> 00:31:25,100 Fossil fuels its carbon 54 00:31:25,500 --> 00:31:27,660 that has been created by living things 55 00:31:28,160 --> 00:31:31,980 that has been pressurized and stored 700 million. 56 00:31:31,980 --> 00:31:34,060 65 million years. 57 00:31:34,060 --> 00:31:35,340 We dig it up, we burn it. 58 00:31:35,340 --> 00:31:36,600 We release that energy 59 00:31:36,600 --> 00:31:40,320 that has been stored down there like a battery to produce electricity. 60 00:31:41,480 --> 00:31:43,500 This one, you just don't need anything. 61 00:31:43,500 --> 00:31:44,620 You don't need the sun. 62 00:31:44,620 --> 00:31:45,960 You don't need dead animals. 63 00:31:45,960 --> 00:31:47,500 You don't need trees. 64 00:31:47,500 --> 00:31:49,620 You don't need gas, oil, coal, anything. 65 00:31:50,140 --> 00:31:53,500 All you need is a pipe, a reservoir of water 66 00:31:53,740 --> 00:31:55,880 and a turbine to spin that steam when it comes out. 67 00:31:56,620 --> 00:31:58,160 That's oversimplification. 68 00:31:58,160 --> 00:31:58,680 Fair enough. 69 00:31:58,680 --> 00:32:02,240 But the root of it is that's all you need, 70 00:32:03,760 --> 00:32:06,140 again, you don't get any cleaner than that. 71 00:32:06,600 --> 00:32:10,420 All you're doing is turning water to steam because of the planet.