|Project by Richard Williams||posted 03-13-2008 03:32 AM||1603 views||3 times favorited||9 comments|
Hi there. I’m in the testing phase of this Solar Heated Duplex Birdhouse now. I record the inside temperatures at 9am 12 noon and 3pm along with the outside temperatures. I also describe the kind of day we are having like cloudy and or windy. That has a very direct affect on the readings that I have been getting and all of this gets logged into an Excel Spreadsheet. Yes it is working and working too well. I have had to cover one of the windows because I did not want it to affect the temperatures that I want to record for the test. I have already reached temperatures of 112 degrees which is much too hot for any birds to use it but it does prove the principles I used to create it of thermo-siphoning. Simple no electric and no moving parts involved in this project. Turning it away from the direct sunlight would almost instantly start to cool it off. However for this test phase I want to see how hot I can get it on the inside using just the black heater section down below the nesting area. That black heater section is where the heated air is made. It must wind its way up and along that maze that empties out the top and into the bottom portion of the inside nesting area. Through a tricky design it heads up towards the attic and after cooling somewhat heads down the back wall channel and along the bottom towards the back of the heater section where it goes down that backside and down into the bottom front where it gets heated again. I did not want the window to help create any heat so that is why I made a tin foil window covering for the top window. Today was the best day of the year of almost 80 degrees outside here in las Vegas and I reached only 92 degrees inside after covering that window up and thusly taking it out of the equation. The first picture is the digital image from within the SolidWorks software application. This is where I conceived of the project during the conceptualization phase of drawing. Then I went into the actual drawing of the parts and fitting them together digitally. After designing all the parts I assembled or mated them together in a assembly drawing. Mating the parts together and finding out what was wrong or needed to be fixed. Believe it or not then you can test the assembly out using the built in FEA analysis application. I am testing the actual prototype of this Birdhouse and a professor at the university is doing a CFD computer analysis on it. (computational fluid dynamics) We will compare notes after the testing phase and then I will write an article for the technical communities and engineering societies. No I am not an engineer but a retired electirician. Anyone wanting more information contact me. Take care.
-- Rich, Nevada,