A better defrost for heatpumps

Acuario · 01-26-17, 05:56 AM

I was looking around to find out if there was a better way to do defrosting than my current method (which is very basic, if the return temperature is less than X for however long then defrost).

I came across this interesting article:
Why Are Heat Pumps So Dumb About Frost?

So it got me thinking. I have noticed that frosting is related to external dew point so a combination of humidity sensor, barometric pressure and temperature seems a good combination.

There are really cheap pressure/temperature/humidity sensors available, the BME280 being one so seems like a good idea to order some and experiment...

Acuario

01-26-17, 05:56 AM	#1
Acuario Apprentice EcoRenovator Join Date: May 2011 Location: Tortosa, Spain Posts: 221 Thanks: 2 Thanked 81 Times in 46 Posts	A better defrost for heatpumps I was looking around to find out if there was a better way to do defrosting than my current method (which is very basic, if the return temperature is less than X for however long then defrost). I came across this interesting article: Why Are Heat Pumps So Dumb About Frost? So it got me thinking. I have noticed that frosting is related to external dew point so a combination of humidity sensor, barometric pressure and temperature seems a good combination. There are really cheap pressure/temperature/humidity sensors available, the BME280 being one so seems like a good idea to order some and experiment... Acuario