Bling wrote:Gyre, does that cooler cool to an absolute temp? Most of them do 40 degrees below ambient, so if it's 95 outside, it's 55 in the cooler, which is too warm for safe food storage, and probably insulin.
You're right that all devices of this type including water heaters have a capacity rating.
Even the Z chip fridges can be powerful, they are just more power hungry.
You have a number of things that you can do to help equipment.
The ratings are usually degrees per hour and may include a mass rating too for fridges.
Once they reach a certain temperature, they may continue to lower it depending on insulation and ambient temperature.
Of course, any unit can be stabilized with full water containers inside.
If you go electric, you may want to choose a freezer or tropical unit with more power, and usually less efficiency or space.
I recall 100 degree cooling recovery on some.
Can't find specs now.
My tent last year, with only barely spaced opaque shade, never got hot until after two pm.
I had ice long after I drove home and left the car with cooler in the sun.
So just shade makes a difference.
I would think you could do what you need with ice and dry ice, but you have to make that decision.
You could ask if you can store your supply in the medical area, if they have refrigeration.
My fridge is japanese and hyper efficient, but there are more powerful models out there.
(I didn't take the electric. Not enough space.)
Mine may be an electrolux.
The Danfoss compressors have a great reputation.
I am considering using one of the kits to build a refrigerator just for the electric savings on grid.
If the numbers pay off, I will.
The claim is that they pay for themselves rapidly.
I posted much more on dc portable units on eplaya somewhere.
http://www.coolerdirect.com/medical-por ... 50-ctg.htm
http://www.aroundoz.com/a_clinic_archiv ... ration.htm
http://www.12volt-travel.com/index.php? ... page&id=12