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Search took 0.04 seconds. Search: Posts Made By: NiHaoMike
Forum: Geothermal & Heat Pumps 06-17-22, 09:00 PM
Replies: 4
Views: 161
Posted By NiHaoMike
Sounds like the most economical option would be...

Sounds like the most economical option would be to open two windows at night and set a fan in one to take advantage of nighttime cooling. Even in a much hotter climate like Texas, it's enough to...
Forum: Geothermal & Heat Pumps 02-27-22, 08:03 AM
Replies: 5
Views: 643
Posted By NiHaoMike
You can look into modifying a cheap window A/C...

You can look into modifying a cheap window A/C into a thermal recovery unit. Basically, the hot air from the condenser goes to the evaporative cooler before going into the space and then the air from...
Forum: Geothermal & Heat Pumps 02-26-22, 02:29 PM
Replies: 5
Views: 643
Posted By NiHaoMike
An evaporative cooler would likely be sufficient...

An evaporative cooler would likely be sufficient for cooling.
Forum: Other Improvements 02-25-22, 08:50 PM
Replies: 2
Views: 779
Posted By NiHaoMike
Might it make more sense to fit a PoE adapter in...

Might it make more sense to fit a PoE adapter in the box and power it from the same backup power source that supplies the rest of the critical equipment in the network? (That's what I did for the...
Forum: Geothermal & Heat Pumps 02-21-22, 08:43 PM
Replies: 3
Views: 679
Posted By NiHaoMike
R22 has been out of production for many years and...

R22 has been out of production for many years and is really expensive now. There are a number of different (near) "drop in" replacements such as R433b although I'm not sure what's most popular now....
Forum: Geothermal & Heat Pumps 02-11-22, 09:14 PM
Replies: 5
Views: 1,257
Posted By NiHaoMike
Perhaps look at the Openinverter project? They...

Perhaps look at the Openinverter project? They specialize in reverse engineering BLDC motors out of EVs, it should be pretty easy to adapt to BLDC compressor motors.
Forum: Geothermal & Heat Pumps 01-01-22, 07:57 PM
Replies: 5
Views: 932
Posted By NiHaoMike
Perhaps the humidity sensor is bad?

Perhaps the humidity sensor is bad?
Forum: Solar Power 11-18-21, 08:03 PM
Replies: 4
Views: 1,359
Posted By NiHaoMike
Some MPP inverters can supply backup power during...

Some MPP inverters can supply backup power during the day using only PV connected to the PV DC input. No batteries needed!
https://www.youtube.com/watch?v=n9KCl8SAh5Y
The only other major brand I'm...
Forum: Conservation 11-10-21, 08:15 PM
Replies: 22
Views: 2,789
Posted By NiHaoMike
Consider getting a small diesel generator and...

Consider getting a small diesel generator and replacing the oil burner with the engine exhaust.
Forum: Solar Power 10-24-21, 06:41 PM
Replies: 2
Views: 1,256
Posted By NiHaoMike
Add a SSR to switch the water heater, then use an...

Add a SSR to switch the water heater, then use an Arduino to control it based on the water temperature and battery voltage.
Forum: Forum News & Feedback 10-04-21, 12:16 AM
Replies: 3
Views: 2,465
Posted By NiHaoMike
Perhaps just rename the "Solar Power" section to...

Perhaps just rename the "Solar Power" section to something like "Solar Power and Energy Storage"?
Forum: Geothermal & Heat Pumps 10-02-21, 05:45 PM
Replies: 8
Views: 1,407
Posted By NiHaoMike
R433b is pretty close to a drop in replacement,...

R433b is pretty close to a drop in replacement, it will require tweaking the TXV to perform its best so make sure the TXV is adjustable first.
Forum: Geothermal & Heat Pumps 07-30-21, 08:29 PM
Replies: 5
Views: 1,612
Posted By NiHaoMike
Is the water heater (presumably natural gas) in...

Is the water heater (presumably natural gas) in the garage? Might want to consider connecting a radiator (designed to withstand the water pressure) and circulating pump to it as a hot water fed space...
Forum: Solar Power 05-16-21, 07:30 PM
Replies: 26
Views: 15,069
Posted By NiHaoMike
Mostly completed the wireless sensor, what's left...

Mostly completed the wireless sensor, what's left is to validate that all of the features work properly and then conformal coat for installing into an outdoor breaker box.
Forum: Tools 05-05-21, 11:18 PM
Replies: 5
Views: 2,181
Posted By NiHaoMike
Arduino + thermocouple ADC board.

Arduino + thermocouple ADC board.
Forum: Appliances & Gadgets 04-09-21, 09:28 PM
Replies: 8
Views: 5,384
Posted By NiHaoMike
Just convert a server power supply into a...

Just convert a server power supply into a charger, now you'll be able to use a substantial percentage of the generator capacity.
Forum: EcoRenovator Blog Discussion 03-31-21, 12:11 AM
Replies: 13
Views: 6,337
Posted By NiHaoMike
Perhaps more investment in automated load...

Perhaps more investment in automated load management is the answer? The technology to make it happen (for example, Raspberry Pi or ESP32) is dirt cheap. Likewise, thermal storage for HVAC is also...
Forum: Solar Power 03-14-21, 10:10 PM
Replies: 26
Views: 15,069
Posted By NiHaoMike
Pretty big Pi Day update. I connected a pair of...

Pretty big Pi Day update. I connected a pair of AK5558 ADCs to the FPGA and managed to program the FPGA to work with them. I then used a Raspberry Pi to send the data stream over Ethernet to my PC so...
Forum: Appliances & Gadgets 02-25-21, 07:09 AM
Replies: 18
Views: 5,383
Posted By NiHaoMike
Ryzen and Intel Xe are the only integrated...

Ryzen and Intel Xe are the only integrated graphics worth buying nowadays for a new x86 machine. You can also consider some of the higher end ARM boards out there, the Pi 4 works great for regular...
Forum: Geothermal & Heat Pumps 12-12-20, 06:17 PM
Replies: 3
Views: 3,506
Posted By NiHaoMike
You can definitely look into thermal storage...

You can definitely look into thermal storage using "IBC totes". Basically, you'll add copper tubing inside the tanks to act as the heat exchanger and then fill the tanks with water to use as the...
Forum: Lawn and Garden 11-01-20, 07:18 AM
Replies: 10
Views: 5,327
Posted By NiHaoMike
Stovetop heating elements would probably be a...

Stovetop heating elements would probably be a better choice.
Forum: Solar Power 10-29-20, 08:34 PM
Replies: 15
Views: 6,159
Posted By NiHaoMike
Might want to take a look at server power...

Might want to take a look at server power supplies, commonly available into the low kW range. Modifying one to have MPPT is going to be tricky even if you're advanced with electronics.
Forum: Geothermal & Heat Pumps 09-18-20, 11:21 PM
Replies: 4
Views: 3,858
Posted By NiHaoMike
The mini splits with that feature are quite...

The mini splits with that feature are quite sophisticated, with a low resolution thermal IR sensor array, high resolution near IR sensor array, and an embedded Linux processor of similar compute...
Forum: The Billiards Room 09-05-20, 02:06 PM
Replies: 9
Views: 4,072
Posted By NiHaoMike
California's problems stem from years (decades?)...

California's problems stem from years (decades?) of neglect causing the old infrastructure to become a fire hazard.
Forum: Conservation 09-04-20, 08:11 PM
Replies: 189
Views: 72,779
Posted By NiHaoMike
Good quality batteries are rated to last...

Good quality batteries are rated to last thousands of complete cycles nowadays, even more for partial cycles. If you don't use them, they'll eventually die of old age.

Selling to the grid is not a...
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