Market Farming

["Alex McGregor" <waldenfarm AT sprintmail.com>]

There was an article early on in "Growing for Market" by someone who built
a walk-in and cooled it with a window air conditioning unit.  They added a
coil heater to defrost the coils, run by a timer.

If you're going to cool it with a new or used compressor and condenser made
for a manufactured walk-in, it might be helpful to locate that first and
determine it's capacity- size of cooler it will keep - at what temp - at
what outside air temp.  One too big will be inefficient, that is use more
electricity.  Cooling compressors reach a peak of efficiency after running
for a few minutes, are energy hogs up to that point.  Too large means it
cycles on and off often and runs for a minute or two.  Too small and it
runs most of the time and wears out fast.

I've worked with cooler service folks in a retail store.  They always knew
where to get decent used stuff and knew what it took for the application. 
Getting to know someone in that line is a big plus, I think.

Alex McGregor
Walden Farm