Hacker News new | ask | show | jobs
by mchannon 2799 days ago
Pretty disappointed with their choice of winner. Using refrigeration to maintain a dewpoint means that this appliance is pretty impractical below 50% relative humidity.

Or in other words, this thing only makes water when you probably don't need water.

Blow some nice 90 deg F 20% humid air past those coils, and you'll be blowing out a lot of 80 deg F 25% humid air out on the other side, getting bupkis for actual produced water, but sucking down plenty of juice. Slow down your intake fan to almost zero, and now your water produced goes up from zero, but the slowest of trickles.

Gotta love all that ozone generator carbon filter garbage on the business end. It's all just bells and whistles to put lipstick on a three-legged pig.

2 comments

"Using refrigeration to maintain a dewpoint"... so, a dehumidifier?
>> this thing only makes water when you probably don't need water.

Living in California recently I constantly see the weather forecast claiming 70-90% humidity and yet the area is basically a dessert with almost no rain. I suppose there are many more areas in the world like that.

That happens because there are many hills which tend to spawn rainclouds when the humidity hits a certain threshold. So while there is moisture in the air it mostly falls in the mountains. Other places with this pattern include e.g. Morocco or the Snake River Valley in Idaho.

https://en.wikipedia.org/wiki/Sky_island

(This is also why people keep building houses in fire danger zones: the forests have a nice climate, but they burn. The flat areas don't burn, but they're inhospitable.)

Sounds like a delicious place to live
You might think that, but the illusion will break fast if you actually move here. The inland can be supper dry, so much you could almost hear it dinning in your ears. No surprise so many water conservation efforts have been launched here!