malofa Posted May 8, 2014 Share Posted May 8, 2014 OK, made a quick one this morning after going to a shop and buying 8" fan and 2 1/2 " elbow. Found an old cheap cooler that I used. Sitting here now enjoying some cool air blowing on me. But, I want to get a solar panel as I have a 12V fan. I want to use it for camping. Will need a battery too I guess. But, we love camping, it just gets too damn hot in Thailand much of the time. Thanks for the thread. My neighbors are already envious. ps. bought a block of ice that perfectly fits the cooler for 20 baht. Now, to see how long it lasts. Where did you buy this fan? Link to comment Share on other sites More sharing options...
Jangot Posted May 8, 2014 Share Posted May 8, 2014 I do think it works just fine. Just a bit messy and will only cool a small area. Use dry ice rather than ice which is -78.5°C and doesn't leave a mess, nothing to clean up or drain afterwards. I had that idea but then realised it would cause death. I've put dry ice in my mouth and tumbled it around quickly to create "smoke" that i puffed out in smoke rings as a party trick..have been doing it for years…how does it cause death?…dry ice lasts a LONG time and may be exactly what is needed…i just don't get this death thing You will get this death thing quite quickly when you find yourself in a room full of carbon dioxide. 1 Link to comment Share on other sites More sharing options...
quidnunc Posted May 8, 2014 Share Posted May 8, 2014 (edited) I do think it works just fine. Just a bit messy and will only cool a small area. Use dry ice rather than ice which is -78.5°C and doesn't leave a mess, nothing to clean up or drain afterwards. I had that idea but then realised it would cause death. I've put dry ice in my mouth and tumbled it around quickly to create "smoke" that i puffed out in smoke rings as a party trick..have been doing it for years…how does it cause death?…dry ice lasts a LONG time and may be exactly what is needed…i just don't get this death thing ACcording to Wikipedia, concentration of 7-10 % of CO2 in air can cause suffocation. Considering that there's a fan blowing and it's unlikely that the room is airtight, I don't think there's much of a danger. But it's going to be quite costly. Edited May 8, 2014 by quidnunc Link to comment Share on other sites More sharing options...
gypsyrodeo Posted May 9, 2014 Author Share Posted May 9, 2014 I'm buying dry ice for a party tonight and will pick up extra for STYROFOAM ac…I'm going to try it Link to comment Share on other sites More sharing options...
gypsyrodeo Posted May 17, 2014 Author Share Posted May 17, 2014 I'm sad to say that the dry ice experiment for styrofoam cooler didn't noticeably improve temperature..when compared to regular ice results….my son and i have worked on this project together,,he has left for the states..if anyone out there wants to collaborate with me…just let me know 1 Link to comment Share on other sites More sharing options...
harrry Posted May 17, 2014 Share Posted May 17, 2014 (edited) I has made simple calculation for small condo room 32 sq. meters with height of wall 3 meters (Vair = S*h = 32*3 = 96 m3) I suppose, we would like to cool air in this room from 32 to 26 degree (Δtair = tair1-tair2 = 32-26=6°C). I suppose, we would like to heat ice from 0 to 20 degree (Δtwater = twater2-twater1 = 20-0=20°C). And we would like to know how much bottles of ice we need? This is heat balance equation: Qair = Qwater Cair*mair*Δtair = Cwater*mwater*Δtwater mwater = (Cair*mair*Δtair)/(Cwater*Δtwater) mwater = (Cair*Vair*ρair*Δtair)/(Cwater*Δtwater) = (1,0061*96*1,2*6)/(4,19*20) = 8,2 kg of ice So, for cooling small condo room, we need about 6-7 bottles 1.25L of ice. equation irrelevant! reason: main factor not taken into consideration. main factor: heat transmission from outside and heat generation inside the condo room during cooling period. p.s. i am too modest and polite to mention a fistful of other flaws in the equation. L-dog vvvs.jpg Little things like latent heat of state change? Why not add salt to the ice.....it makes ice cream freeze. Main flaw is the refrigerator is where it can affect the cooled space. Ice is useful. Murdoch University uses off peak power to freeze ice in a big underground tank and the lecture theatres are cooled by air blown over this ice. http://www.calmac.com/benefits/documents/IB-182TechnicalIntrotoCoolStorage08_06.pdf Edited May 17, 2014 by harrry 1 Link to comment Share on other sites More sharing options...
sirineou Posted May 17, 2014 Share Posted May 17, 2014 (edited) I'm sad to say that the dry ice experiment for styrofoam cooler didn't noticeably improve temperature..when compared to regular ice results….my son and i have worked on this project together,,he has left for the states..if anyone out there wants to collaborate with me…just let me know You buy the beer I bring the Styrofoam Cooler and we can coolabeerate 13 words , 14 typos, maybe I need to lay of the beer Edited May 17, 2014 by sirineou 1 Link to comment Share on other sites More sharing options...
gypsyrodeo Posted May 18, 2014 Author Share Posted May 18, 2014 (edited) problem solved…i drink a lot of beer anyways…before drinking ill place the ice cold beverages in the STYROFOAM ac to cool my room..when the beer gets warm ill pretend to be german and drink them Edited May 18, 2014 by gypsyrodeo 1 Link to comment Share on other sites More sharing options...
gypsyrodeo Posted May 20, 2014 Author Share Posted May 20, 2014 (edited) I'm sad to say that the dry ice experiment for styrofoam cooler didn't noticeably improve temperature..when compared to regular ice results….my son and i have worked on this project together,,he has left for the states..if anyone out there wants to collaborate with me…just let me know You buy the beer I bring the Styrofoam Cooler and we can coolabeerate 13 words , 14 typos, maybe I need to lay of the beer will the ice chest be full of ice? Edited May 20, 2014 by gypsyrodeo Link to comment Share on other sites More sharing options...
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