Burner and fuel consumption rate

Click For Summary

Discussion Overview

The discussion revolves around determining the fuel consumption rate of gas burners, specifically focusing on the relationship between the number of rings on a gas burner and its fuel consumption. Participants explore how to calculate fuel consumption based on energy values and efficiency ratings.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks assistance in determining the fuel consumption rate of a gas burner and questions the relationship between the number of rings and fuel consumption.
  • Another participant requests clarification on what is meant by "rings" in the context of gas burners.
  • A participant explains that the heat value of a gas burner is typically expressed in MJ/hr and questions how this value is determined.
  • It is noted that larger burners generally consume more gas to produce more heat, and the energy density of natural gas is mentioned as 56 MJ/kg.
  • Participants discuss the importance of combustion efficiency and heat transfer efficiency in calculating fuel flow rates.
  • One participant inquires about how to determine the fuel flow rate based on energy density and expresses confusion about the relationship with the power company’s flow rate.
  • A participant states that three variables—power, flow rate, and energy density—are involved in calculating fuel consumption, suggesting that knowing any two can help determine the third.

Areas of Agreement / Disagreement

Participants express varying levels of understanding regarding the calculation of fuel consumption rates, and there is no consensus on how to determine the fuel flow rate specifically for stoves with multiple rings. Multiple competing views and questions remain unresolved.

Contextual Notes

Participants mention factors such as combustion efficiency and heat transfer efficiency, which may influence calculations but are not fully resolved in the discussion. The specific methods for determining fuel flow rates for different burner configurations are also not clarified.

MTGreen
Messages
5
Reaction score
0
I don't know how to determine the fuel consumption rate of a gas burner and would like to seek for help.
Also, is there any relationship between the number of rings of gas burner and the fuel consumption rate?
 
Engineering news on Phys.org
Welcome to PF!

Rings? What rings? Yes, we can help, but you'll need to be more descriptive.
 
Hi russ, I'm referring to the cast iron ring stove burner (or ring gas burner).
 
When we purchase a gas burner stove, it comes with a heat value like in MJ/hr. I wonder how this value comes from and how could it be determined.
 
MTGreen said:
Hi russ, I'm referring to the cast iron ring stove burner (or ring gas burner).
Like this?:
5-four-ring-burner.jpg


Yes, a larger burner will generally use more gas to produce more heat.
When we purchase a gas burner stove, it comes with a heat value like in MJ/hr. I wonder how this value comes from and how could it be determined.
It comes directly from the energy capacity of the fuel. If we're talking about natural gas, it has an energy density of 56 MJ/kg. https://en.wikipedia.org/wiki/Energy_density#Energy_densities_ignoring_external_components

Figure 70% combustion efficiency and about 50% heat transfer efficiency (that one can vary a lot) and you can easily calculate the fuel flow rate based on desired heating.
 
  • Like
Likes   Reactions: billy_joule
Here in the UK gas rings are usually rated in Watts (Actually in kW). To work out the rate of gas consumption you have to know the energy density of the fuel as Russ said.
 
  • Like
Likes   Reactions: billy_joule
Russ,
Yes, the figure shows the burner that I'm talking about.
So, if we use energy density (MJ/kg) to calculate fuel consumption rate (MJ/hr), it means that we need to know the fuel flow flate (kg/hr).
However, how could we determine this fuel flow rate?
 
Is it related to the flowrate provided by the power company?
If yes, then how to determine the fuel flowrate for stoves with 2 and 3 rings?
As more the number of rings, the higher is the fuel consumption rate.
Thank you for your help!
 
There are three variables...
Power
Flow rate
Energy density

If you know any two you can work out the third. Which two do you know?
 

Similar threads

Inconsistent flow rate measurements of an engine diesel fuel
  • · Replies 12 ·
Replies
12
Views
3K
  • Poll Poll
More fuel efficient drivers = better drivers?
  • · Replies 34 ·
2
Replies
34
Views
4K
Looking for ideas for a propane burner design
  • · Replies 4 ·
Replies
4
Views
2K
A practical way to vaporize fuel for high MPG?
  • · Replies 39 ·
2
Replies
39
Views
4K
Propane/Oxygen - from Cylinder to Oxy/Fuel cutting torch
  • · Replies 1 ·
Replies
1
Views
2K
What factors affect fuel consumption and speed in road vehicles?
  • · Replies 1 ·
Replies
1
Views
1K
Volumetric flow rate of nitrogen through relieving pressure regulator
  • · Replies 3 ·
Replies
3
Views
3K
Fuel usage to accelerate to 20 mph
  • · Replies 7 ·
Replies
7
Views
3K
An overlooked point in fuel-efficient car driving speed
  • · Replies 6 ·
Replies
6
Views
6K
Mechanism Ideas for: Rotary Action-input Pump?
  • · Replies 9 ·
Replies
9
Views
2K