Market Farming

["TxBeeFarmer" <TxBeeFarmer AT HotPop.com>]

Ok, I understand much better now.  48 loops sounds like a lot.  Is it one
loop per bench?  You don't have flow valves on each loop to adjust the
amount of hot water going through?   Do you have your circulating pump on
the supply side (hot) of the loop or the return side (cold)?  I'm just
wondering if you are using a cold water pump or one designed for hot water.

In your original post, you said "I can easily heat the trays and pots
on the benches to 70 degrees with the radiated heat capable of heating the
whole house over head at half the cost of a modine type hot air heater."
Are you saying you can heat the whole house with the under bench system, or
am I not reading it correctly?

Thanks
(West Texas) Mark
----- Original Message -----
From: "robert schuler" <sunnfarm AT bellatlantic.net>


> Mark, Water passes through 48 independent loops from a hot water main line
so
> each loop gets the same temp water entering and same cooled water on
return.
> When going full tilt water out of the heater on the coldest night is
120-130
> degrees and return temp is 90 degrees. Heater thermostat is pre set at 160
> degrees. This is enough to maintain 70 degrees in the root zone of trays
on top
> of wire benches. I do not insulate under the benches. On larger systems
with
> greater heating capacity they install tempering valves to add cold water
when
> needed. My system is free standing. Bob.