Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
a heating puzzler (sort of)
Steve Ebels_3
Member Posts: 1,291
I always liked that story, in the book of Judges chapters 5&6 I think. It's all about trust. It's not about dewpoints.
0
Comments
-
a hvac puzzler (sort of)
I have a carport in my driveway for one car. No walls, just roof. I have two cars, both are the same model, same color (if you find something you like...) So when I wake up in the morning after a clear night, maybe a little wind, maybe not, the car in the carport is dry, the car in the driveway is has dew over it. What's up with that?0 -
Did you ....
pray like Gideon????
Floyd0 -
Guess
This is just a guess. The car in the drive can see the night sky and looses more heat than the car in the car port. The carport acts just like a cloudy night. So the surface of the car in the drive is at or below the dew point temperature of the air and the surface of the car in the car port is above the dew point temperature. bob0 -
What about
The roof of the carport? Wet?0 -
All about temp
The car that is on the outside of the carport is cooler than the other one. Not by much, but cooler. Moisture is condensing on the cooler surface. That car port is keeping the other car warmer. Think of cloud cover in your area...At night when there are clouds, it will be a-little warmer than it would be on a clear night. Ask your weather guy....0 -
Have you ever switched cars?oes the same thing happen to the other one?0 -
DEW IT OR DON'T IT
Temperature is the culprit. The surface of the car outside of the carport is cooler than the one in the carport. The surface is reaching the Dew point and forming condensation from the miosture in the air. The car inside the carport is being kept somewhat warmer from the building radiating heat from normal heat losses and from acting like a heat sink - absorbing heat during the day and radiating at night.0 -
two words
radiant cooling
the problem would have been less if it had been cloudy that night.0 -
Most nightly news and weather
stations will post the dewpoint. With this info you could probably predict which mornings will provide dew.
hot rod
To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"0 -
Deep Space
has a temperature of approximately 3 Kelvin. The carport doesn't let the car underneath see the sky. Therefore it's surface temperature is more nearly the ambient temperature. The upper surface of the car that's not underneath the carport is colder due to the radiant cooling of the night sky.
-Andrew0 -
very impressive. nearly everyone got it exactly right. this was a weather puzzler that was on some weather site, and as I recall there were no correct guesses for a while. I couldn't figure it out. the night sky acts as a big heat sink.
James0 -
Picture this....
The actual efect of night sky reradiation as studied at the Eatherton Research Center for Hydronical Studies...
Enjoy!
ME
To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"0
This discussion has been closed.
Categories
- All Categories
- 86.3K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 100 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 63 Pipe Deterioration
- 916 Plumbing
- 6K Radiant Heating
- 381 Solar
- 14.9K Strictly Steam
- 3.3K Thermostats and Controls
- 54 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements