DIY Leaf-Vacuum: Using Venturi Equations for Pressure Calculation

In summary, the conversation discusses the creation of a leaf-vacuum using a leaf-blower and the calculation of pressures for this purpose. The Bernoulli equation is suggested as a starting point, but actual numbers will be needed. It is suggested to use the suction side of the blower to pull a vacuum on the leaf container for increased flow. The conversation also mentions the option of buying a leaf-vacuum instead of building one.
  • #1
cellurl
19
7
I want to make a leaf-vacuum using a leaf-blower.
Does anyone know how I might calculate the pressures?
Thanks!
leaf.png
 
Engineering news on Phys.org
  • #2
The Bernoulli equation should get you started with estimates but you will eventually need some real numbers. Do you have a way to measure static pressure or flow rate?

Could you simply pull a vacuum on the leaf container with the suction side of the blower? You would get more flow that way.
 
  • #3
Generally all vacuum cleaners/blowers have 2 points to connect the pipe. One for vacuum and one for blowing.
Do you want this for academic purposes or for actually using on leaves?

Like montoyas said, Bernoulli's equation will help you, but you need some numbers.
 
Last edited:
  • #4
Leaf blowers often advertise their wind speed, so that and Bernoulli's equation is all you need.
 
  • #5
Thanks, I think just letting the leaves go thru a fan blade is the best way to go, and for that, I would buy not build... Thanks again!
 

1. How does a DIY leaf-vacuum work?

A DIY leaf-vacuum works by utilizing the Venturi effect, which is the reduction in fluid pressure that occurs when a fluid flows through a constricted section of a pipe. In this case, the constricted section is created using a nozzle attached to a vacuum cleaner, and the lower pressure created by the Venturi effect helps to suck up leaves and other debris.

2. What are the benefits of using a DIY leaf-vacuum?

One of the main benefits of a DIY leaf-vacuum is that it is a cost-effective solution for cleaning up leaves and debris in your yard. It also allows for better control and maneuverability compared to traditional leaf blowers. Additionally, the Venturi effect used in the vacuum can also help with sucking up smaller debris and dust that may be missed by other methods.

3. How do you calculate the pressure using Venturi equations in a DIY leaf-vacuum?

The pressure calculation for a DIY leaf-vacuum using Venturi equations involves measuring the diameter of the nozzle, the diameter of the vacuum cleaner hose, and the air flow rate. From these measurements, the velocity of the air can be calculated using the continuity equation, and then the pressure can be determined using the Bernoulli's equation.

4. Are there any safety concerns when using a DIY leaf-vacuum?

As with any DIY project, there are some safety concerns to be aware of when using a DIY leaf-vacuum. It is important to make sure that all parts are securely attached and that the vacuum is used according to the manufacturer's instructions. Additionally, protective gear such as goggles and gloves should be worn to protect against any debris that may be kicked up during use.

5. Can a DIY leaf-vacuum be used for other purposes?

Yes, a DIY leaf-vacuum can be used for other purposes besides cleaning up leaves. It can also be used for cleaning up other debris in your yard, such as grass clippings or small twigs. Additionally, it can be used indoors for tasks such as vacuuming up sawdust or other small particles.

Similar threads

  • General Engineering
Replies
16
Views
2K
Replies
2
Views
920
Replies
5
Views
2K
Replies
8
Views
2K
Replies
2
Views
862
  • General Engineering
Replies
3
Views
2K
  • Set Theory, Logic, Probability, Statistics
Replies
6
Views
672
  • Materials and Chemical Engineering
Replies
2
Views
863
  • Mechanical Engineering
Replies
11
Views
1K
  • General Engineering
Replies
15
Views
475
Back
Top