June 25

Yesterday, we drilled a hole on one cap of the aluminum cylinder and we sealed that end with silicon. We weighted the pipe.

Today, we are performing our a new test.

Time Stamp, Solar Intencity, and Comments

11:14:45 AM 1225-1230

11:27:26 AM 1280-1287 The sun intensity was different where we were, so we moved the solar concentrator to the area where there was greater intensity.

11:42:15 AM 590-610 There is a cloud under the sun, and the instrument is showing around a 50% difference in sun intensity.

11:45:44 AM We adjusted the solar concentrator

12:00:43 PM 630-650 Cloud is still over us.

12:10:55 PM The sun is being covered by long low clouds, which are covering at least 70 percent of the sky. This experiment shows how the solar concentrator does with partial sun exposure. On the field we noticed that the temperature of the center thermal sensors continue to increase at a steady pase, but not as quickly as when we had full sun exposure. However, seeing the steady increase of the temperature without having a medium inside the center cylinder is promising. Once we have a medium inside, it should show even more retention and continues increase.

12:13:19 PM 620-650 The temperature has started to go down. Thus we hypothesis that the reserved heat has broken even, and with no reserve it has started to lose its previous rising slope.

12:19:39 PM 750-780 We are experiencing temperature fluctuation now, since the sun is coming from under the clouds, but as the wind blows it changes our temperature variables. However, the temperature is back to rising steadily, but slowly.

12:24:08 PM 1100-1121 The sun is now is almost at its center point, still partially covered, but the temperature is rising steadily.

12:28:47 PM 1312-1315 The test shows that the temperature is rising steady and that if we were cooking something it would slowly cook. Our empty cylinder is not letting the heat escape and is slowly absorbing the heat.

12:30:52 PM 1412 mark 421

12:32:18 PM 1330 mark 424

12:34:22 PM 1412

12:34:42 PM 1430-1440 mark 450

Final notes Jun 25, 2015 This experiment was done on partial sunny day with no medium inside the aluminum cylinder within the solar concentrator.