Greenway

  30°C plus Autumn day here a good test fro the cooler in anger   70 Liter bin a tank and a 750LPH bilge pump

 

More DAS Data ERV Temperature vs Rooms and Outside HVAC Activity and Cost NZ$ Bedroom Temperatures 1-11-2020 Bedroom Humidity 1-1-2020

 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

I do want to increase the maximum flow rate for the inlet so an additional fan in the inlet filter should help overcome the blockage in the filter its self and heat exchanger core. New filter fan to be placed in the inlet duct. Its in a Sistema box that fits the following filter almost perfectly Features: Double-layer activated carbon filter cloth High filtration efficiency High dust holding capacity Good temperature Resistance Economical, practical and easy to install   There is an additional mesh filter to catch larger debris like leaves  Airflow Sound level

I think I'll build one of these https://woodgears.ca/dust_collector/impeller.html Credit  https://woodgears.ca/ I need to cost this out properly I suspect the valves will push the cost up to high might bi simpler to build a fan What about this This might be better and more compact The valves I want a booster exhaust air mover that can say exchange all the air in the house in 15 or 20 minutes The calculation above shows I can do this with one or two 75cm gym ball lungs. So the idea is make a rolling diagram or ball compressor from 2 NZ$12 gym balls and a windscreen wiper motor. So 45 decrees of travel in 2.5 seconds? A wiper motor can do that but the Torque needed at a radius of say 50cm would be?????? Hard to say these is virtually no air pressure however the ball has significant wall thickness best discovered by experimentation,. I think. Torque needed to excerpt 2kg of thrust at 50cm is approximately 9.81 Nm unsurprisingly, or 1kg/Meter. Can a wiper motor deliver 1kg at a half me...

 

  I use this for logging from inside a rule, using an HTTP GET, for saving data from Maker API to disk on a Windows host. I will probably add emailing to this app soon so I can send the files as attachments to IFTTT and have them save the attachment to Google drive, I imagine. Here is the rule. C# Code Here And the possibility of using the maker API to run real-time graphs and gauges like in Node-Red. I'm working on a wee project 2 building an ERV system using my Hubitat, Arduino and Xiaomi. Usage HTTP call in rule machine http://192.168.1.71:82/logtempertures.svs?csv=Outside%20Climate,Hallway%20Climate,Bedroom%201,Bedroom%202,Bathroom%20Climate,Room%20Climate,Office%20Climate You can see how the above URL works ?csv=name of device 1, name of device 2 ?csv=name of device 1, name of device 2 Makes the logger log a file on the Windows host for the whole day, and return all the rows currently in the file. ?json=name of device 1, name of device 2 Makes a log for the yyyy-MM-dd-hh-m...