Pepino News

Years ago when I first built Pepino (my 12VDC swamp cooler), I bought a bunch of greenhouse evaporative cooler pads for it. After a lot of trial and error, I found this type of pad works best for my application.  Been noticing that last years pad just isn't cooling like it should so I used the last new chunk I had on hand to replace it. That made a 10° cooling difference.  Ordered a new slab that should cover me for the next three years. Each replacement requires a 12" piece.  76,105,93,0,B  

Pepino II season

Getting a little warm inside these days so it was time to fire up my swamp cooler for its' fifth season.
82,90,58,0,B

close cooling

Got everything hob knobbed together to try out the new swamp cooler....started testing late in the day around 3:30 - but pulled the inside temp down from 88 to 86 (103 outside). This is a good sign as normally the temp would start rising to above 90 inside by this time - without a constant fresh airflow coming through my house. Just a few more details to attend to and I will do the final wiring.
Had to clean (water and baking soda) the positive terminals on my 6 volt lead acid batteries and give them a drink of distilled water as they were a little low. The two 12 volt sealed AGM's were clean as a whistle and in no need of fluid.

The bottom cooler is the reservoir and includes a 12VDC pump that is timed via the kit I soldered together. Right now it is set to pump for 6 seconds and wait 3 minutes till the next cycle (this will be adjusted to provide optimum cooling). The water moves up to the small container mounted above the top cooler. It drips through 8 holes onto the evaporative medium. Excess water drains back down to the bottom cooler. Four 100cfm muffin fans blow the cool air inside my house through a NW window. Air exhausts through a SE window. 97,109,52,0,C