Calculating RH and Heated Air Take-Up

  • Context: Graduate 
  • Thread starter Thread starter chrislock
  • Start date Start date
  • Tags Tags
    Air
Click For Summary
SUMMARY

The discussion focuses on calculating the water take-up in heated air using a fan delivering air at 1000 cu m/hr from an ambient source with specific temperature and humidity conditions. The initial parameters include a dry bulb temperature of 27°C and a wet bulb temperature of 24.3°C, resulting in approximately 80% relative humidity (RH). After heating the air to 65°C and achieving 100% RH, the confirmed water take-up is 189.6 Kg/hr, considering the expansion of air to 1126.7 cu m/hr.

PREREQUISITES
  • Understanding of psychrometrics and humidity calculations
  • Knowledge of air properties and thermodynamics
  • Familiarity with HVAC systems and air handling units
  • Basic proficiency in using software for thermal calculations
NEXT STEPS
  • Research psychrometric charts for air properties at various temperatures and humidity levels
  • Learn about HVAC system design and airflow calculations
  • Explore software tools for thermal and humidity calculations
  • Study the principles of heat transfer and moisture transfer in air
USEFUL FOR

Engineers, HVAC professionals, and anyone involved in thermal management or humidity control in air systems will benefit from this discussion.

chrislock
Messages
4
Reaction score
0
I know that this is a bit off the beaten track, (its a physics question) but I'm trying to confirm the results of a piece of software I've written.

If you have a fan delivering air at 1000 cu m/hr from an ambient source at 27C Dry bulb and 24.3C wetbulb (approx 80%RH i.e. 18 gmswater/ Kg air) and you heat and then spray the resultant air with water to ensure its at 65C and 100% RH - what is the take up of water into the air, assuming it all gets removed? i.e. how many KG / hr.

This sounds complicated but it really isnt. I just need someone to confirm my answer.
Thanks,
Chris
 
Science news on Phys.org
I didnt really want to give this - in case it influenced anyone else's!
(I will if you have an answer though)
Vhris
 
Sorry, but that's not how it works here. We don't just hand out answers, we help people find them. So as a starting point, we need what you have so far.
 
OK - 1365.3 Kg/hr, taking into account the expansion of air (8112 cu m/hr)
Chris
 
Sorry - I entered the wrong info!
189.6 Kg/hr, taking into account the expansion of air (1126.7 cu m/hr)
Chris
 

Similar threads

High School How long does it take air to heat up water?
  • · Replies 3 ·
Replies
3
Views
6K
Calculating the air venting flow rate needed during CIP of a tank
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad How much power does it take to heat up air?
  • · Replies 20 ·
Replies
20
Views
39K
Car Radiator as Air-to-Water Heat Exchanger
  • · Replies 9 ·
Replies
9
Views
6K
Steam boiler efficiency calculations
  • · Replies 10 ·
Replies
10
Views
2K
Need Help with Heat Exchange Calculations for Cosplay Suit Idea
  • · Replies 1 ·
Replies
1
Views
3K
Problem set with air conditioners and thermodynamics
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Psychrometrics - Pure Humidification Process
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Calculating Convective Heat Transfer of Floor-Air
  • · Replies 8 ·
Replies
8
Views
3K
How Much Air Does a 600W Hair Dryer Circulate Per Second?
  • · Replies 6 ·
Replies
6
Views
6K