Revision as of 19:35, 17 November 2016

Industry Standards

Hillbilly heater - 20 sf or 2 sq meters per 500' roll of 1/2" tubing - $75 - [1]

$250 cost for 4x8 foot finned collector with CPVC, which works comparably to finned aluminum collector - or $8/sf - [5]

Exchange Solar heat to aquarium water.

Heat transfer is limited by the thermal conductivity of the pipe (PEH ~0.5 W/m K good for plastics).

Is high-pressure system ideal or is a low-pressure gravity system possible using black gutter(s) etc.?

Can water be mixed directly or is thermal mixing a bigger problem?

Can temperature be managed by pump control?

@@ Line 1: / Line 1: @@
 =Industry Standards=
-*Hillbilly heater - 20 sf or 2 sq meters per 500' roll of tubing - $75 - [https://www.menards.com/main/outdoors/watering-irrigation/polypipe/1-2-100-psi-irrigation-pipe-yellow-label/p-1444431569865-c-8570.htm?tid=-1413797259335592239]
+*Hillbilly heater - 20 sf or 2 sq meters per 500' roll of 1/2" tubing - $75 - [https://www.menards.com/main/outdoors/watering-irrigation/polypipe/1-2-100-psi-irrigation-pipe-yellow-label/p-1444431569865-c-8570.htm?tid=-1413797259335592239]
+:*Compare to 3/4" tubing -
 *Amazon - 4 sf - $124 - [https://www.amazon.com/SW-38-Solar-Water-Heater-Panels/dp/B0041VM58E]
 *Evacuated tube - 5 sf - $179 + $230 ship - [http://www.ebay.com/itm/10-Evacuated-Tubes-Solar-Collector-of-Solar-Hot-Water-Heater-Vacuum-Tube/272110504741?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3D325f30ec2c5d474488e1cd3aaa7363ab%26pid%3D100338%26rk%3D9%26rkt%3D29%26mehot%3Dpp%26sd%3D331878211226]