DIY HRV (Heat Recovery Ventilation)
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- เผยแพร่เมื่อ 13 มิ.ย. 2024
- The video today will talk about my DIY HRV (Heat Recovery Ventilation). I explain what an HRV is, why I am using one (CO2 reduction), Why DIY, and how I built this HRV.
AC Infinity Duct Fan: acinfinity.com/hvac-home-vent...
Plastic Board: www.homedepot.com/p/Coroplast...
PVC Sheet: www.homedepot.com/p/24-in-x-1...
I had plain 1/4" but same thing more or less.
www.homedepot.com/p/Veranda-1...
Have a comment or a question? Please feel free to leave them down below in the comments section. I enjoy interacting with the community and will try to respond to comments and questions as quickly as I can. www.reef2reef.com/threads/ale...
Want read more about my system check out my Reef2Reef build thread:
This channel is dedicated to the education of hobbyists and the general public that wants to learn about specific topics related to the aquarium hobby.
This is amazing. This should be taught is schools. Very important and for health ❤❤❤❤
I'm looking forward to a follow-up as the outdoor temps get colder. I really want to do this for fresh air exchange in a very tightly insulated tiny home
Thank goodness for this video - finally an awesome explanation of what a HRV is!
This is gold!
I've been looking for a budget friendly version of a hrv. Thank you!!
Thanks Thomas T. I'm glad you enjoyed the video.
Yes, I looked at a bunch of crap videos before I found this one. Great Work!
This is just amazing. It seems so simple and so good. I'm really waiting for the results after a few months! Good luck with it.
I love it, smart gentlemen, very simple and efficent design. I will try this sometimes, only problem is I live in Apartment😞
Great description
I'm really curious to see how this DIY version works. It makes too much sense to do this instead of paying 4 times the amount for a regular unit.
Sweet! Thank you for this video. I don't keep aquariums right now oh, but I was looking for heat recovery for fresh air. I would not have thought about plastic, I thought they had to be metal. But, like you said - slower air movement = more time for heat transfer. And for that cost, you can make it bigger. (More surface area for exchange)
Very good job man.
Amazing content thanks
how much does this affect the ac running?
This was stupendous! If I understand it right, the difference between a heat recovery ventilator and an energy recovery ventilator is that ERV allows the transmission of humidity along with the temperature. What is the inner filter made of in an ERV? Would a different corrugated medium similar to those plastic boards, but able to transfer humidity/moisture, turn this HRV into an ERV?
That's an interesting way to make the heat exchanger. I've thought about a economical way of making one years ago and never considered using plastic as a material. It's heat conduction is so poor compared to metal. But being as thin as it is, it might still be adequate. I'm sure this will be be far better than just opening a window in any case.
But the efficacy of the the heat exchanger won't be measured by the CO2 levels, an open window will achieve the same thing. It'll be measured in temp. differential between incoming and out going air when there is a big difference between inside and outside.
Just a thought, but you might be able to improve heat exchange by making this a 2 or 3 stage system with each stage being the same thing , just one porting into the next. Also, running lots of copper wires through the corrugated plastic (passing through the planes) could help with plastic's heat conduction shortcomings.
Thanks Siggy in CR. I considered copper and aluminum but the cost was so high along with having to be concerned about metal corrosion over time. Then I saw that some commercially available units can use plastic for a core which is why I went that direction. With a high efficiency heat exchanger I can see that you could scale it down in size but with this material its cheap to scale to a larger heat exchanger that it should overcome the efficiency. I use a PEX coil for my aquarium radiant heat exchanger as well and it does a great job of heating 2100 gallons of water I just need to use a 50'+ heat exchanger coil. Very good point on measuring the heat exchanger efficiency I did not even cover this outside of the thermal imaging. I think the next video I do for a follow up on this HRV after its been running a few months will focus more on heat exchanger efficiency as I don't have enough data to really cover that yet. I have observed that intake air after the HRV has been fairly close to room temp but we have not had any really cold days yet. As an example this morning the intake outside air was 51F before entering the HRV, Room Temp is 72F , Intake outside air exiting the HRV was 68F with both duct fans running at 100%. I think I am going to need to log these readings or get some temp probes to place in the air ducts to I can constantly measure.
@@siggyincr7447 I like the 2 stage or 3stage idea which is similar to what I mentioned about expanding the HRV size.
Hey very interesting solution. I saw a similar design online. Did you use that as a base or this design was inspired by the comercial level hrvs. Also do you have any updates on the performance? Thanks for thr video, it looks super interesting
Did you ever think of using the guts ( heat exchager )from a condensing dryer as the core for your unit ?
Subscribed.
Thanks for the content.
Keep up the good work.
בס'ד
I’m curious as to which CO2 meter you are using to measure
The black version of that plastic should transfer heat better
It is informative.
Please share the update. Where will you install it.
The core where to find the core. Please share the link or where to find it.
Thank you
I plan to build one
The White Corrugated Twinwall Plastic is linked in the video description. The HRV is still running great.
Thank you sooo much
Here you use two separate ventilators right? One which pumps air from outside to inside and one which is pumping the air from inside to outside.
Yes one vent fan for each air flow.
Now that the winter is over.. how did it do with the condensation?? I need to do something with my house cause i have very high humidity and mold inside
The only condensation issue I had with condensation was on the HRV box itself and the output of the outside air into the room duct. I placed a fan on the HRV and the issue was solved. The internal condensation drained into my buckets the HRV was sitting on without an issue.
@@algawura2 thanks for sharing
What type of co2 meter are you using to measure your home levels
This is the model i have GZAIR CO2 Data Logger Monitor, IAQ CO2 Detector, Dual-Channel NDIR Sensor, Tabletop Carbon Dioxide Meter with Data Export, Temperature and Humidity, 0~5000ppm Range
Is plastic really the best material for the core? If so why?
I had a similar question. I guess the goal is the material of the highest temp transferability. That would be affected by its density and its thickness I would imagine. There are likely better materials but this is quite serendipitous (and cheap!) for a DIY epiphany haha.
HRV is a good choice in general. But for CO2 specifically, maybe growing more plants would be better?
Thanks Sylvan dB. I did experiment with house plants and did not find that they were able to make major difference in co2 levels. I might do more experiments later but the number of plants needed might be more than I would like to manage.
@@algawura2 yeah that's a fact that is backed by several studies