Greenway

  The Pump Model Name Aquapro AP1050 Waterfeature/Pond Pump Model Number 02AS003B Material Durable Plastic Wattage 18 Maximum Flow (litres per hour) 1050 Voltage 240 Cord Length (m) 10 The baffles The matrix Spray pattern

Turns out the bilge pump in the swamp cooler isn't designed to operate for hours at a time :) and it has failed. I wont need to immerse the motor so its got a good chance of surviving. Also I wont be running it constantly or flat-out. The flow rate is massive its a 12V 480W motor. Here is my offering which I will be finishing with a water tight capsule fore the motor  and some fiberglass around the base to make it strong as. It draws too much current not a sensible option after all Here's what I got instead Model Name Aquapro AP1050 Waterfeature/Pond Pump Model Number 02AS003B Material Durable Plastic Wattage 18 Maximum Flow (litres per hour) 1050 Voltage 240 Cord Length (m) 10

  See it Live Here Swamp Cooler Back In action small bilge pump a contra rotating 120mm 12V PWM fan Simple Hubitat rule for control while I'm evaluating it. So far so good it seems almost 4°C delta T 

 

 

  As ever on a budget waste not want not approach. mostly stuff I had in stock Code ERV Code Six individually fused channels Power board shown in place. 35 Amp Hall effect current sensor. Driver code here  ERV Code Dashboard for ERV fan control and testing      Six controlled channels with 25Khz PWM fan speed control The first layer of the system. Two Arduinos one for control one for networking, Code here  ERV Code

  Simple loft fan rule

  Two 40 Watt fans inline 40cm diameter 4mSec at 150mm outlet .Parts total cost NZ$60 

 

  Smart control: - reduces power costs of air handling units - adjusts ventilation to your everyday needs - provides a wide range of control options It has been estimated that smart control allows to half the average cost of electricity for ventilation. Air Quality Hubiat Prototype 1 of control system

 Matt Resinger on youtube has a lot of videos about the subject. He’s a custom home builder, so he does favor the more expensive materials. But he’s also very focused on making sure things last a long time. I find a lot of his stuff interesting. Here’s one where Matt talks ERV vs HRV Here are a couple This Old House videos on the ERV subject: Seeing it work with smoke bombs A discussion on indoor air quality