Thermodynamics is air ducts, dew point

In summary, the conversation revolves around determining the behavior of air inside an air conditioning duct when cooled and its effect on the dew point. The speaker believes that the flow is at constant volume due to the open ends of the duct, while the other person mentions a small pressure differential caused by the fan, which can be assumed to be constant pressure.
  • #1
rolan91602
2
0
Can anyone confirm if the flow of air inside an air conditioning duct, when cooled, behaves as constant volume as compared to constant pressure? I am trying to determine the dew point of the flow and, depending of how it behaves inside the duct, this value will depend on if it is at constant voulume or constant pressure. I think it is at constant volume. Please confirm.
 
Science news on Phys.org
  • #2
The duct is open on both ends. There is going to be a small pressure differential due to the fan, required to move the air, but it's going to be almost insignificant. To a good approximation, you can assume constant pressure.
 
  • #3
Thank you.
 

Related to Thermodynamics is air ducts, dew point

What is thermodynamics?

Thermodynamics is the branch of physics that deals with the relationship between heat and other forms of energy. It studies how energy is transformed into different forms and how it affects the properties of matter.

How do air ducts work?

Air ducts are used in heating, ventilation, and air conditioning systems to distribute air throughout a building. They work by using a fan to push air through the ducts, which are typically made of metal or flexible plastic. The air is then delivered to different rooms through vents or registers.

What is the dew point?

The dew point is the temperature at which water vapor in the air will condense into liquid water. It is a measure of the amount of moisture in the air and is affected by factors such as temperature and humidity.

How does thermodynamics relate to air ducts?

Thermodynamics plays a crucial role in the design and function of air ducts. It helps determine the amount of energy needed to push air through the ducts and maintain a desired temperature. The laws of thermodynamics also govern the transfer of heat between the air and the ducts, which can impact the overall efficiency of the system.

Why is the dew point important?

The dew point is important because it helps us understand the amount of moisture in the air. This is especially useful in HVAC systems, as high humidity levels can affect the comfort and health of occupants. Additionally, determining the dew point is crucial in predicting weather patterns and potential for precipitation.

Similar threads

Replies
1
Views
1K
  • Thermodynamics
Replies
3
Views
1K
Replies
3
Views
1K
Replies
5
Views
721
Replies
11
Views
1K
Replies
20
Views
1K
  • General Engineering
Replies
11
Views
2K
  • Thermodynamics
Replies
5
Views
1K
Replies
5
Views
601
  • Thermodynamics
Replies
2
Views
3K
Back
Top