How to Calculate and Solve for Constant of Lorentz Number | Thermal Properties
Last Updated on July 25, 2022
The constant of lorentz number is illustrated by the image below.
To compute for constant of lorentz number, three essential parameters are needed and these parameters are Thermal Conductivity (K), Electrical Conductivity (σ) and Absolute Temperature (T).
The formula for calculating the constant of lorentz number:
L = K/σT
Where:
L = Constant of Lorentz Number
K = Thermal Conductivity
σ = Electrical Conductivity
T = Absolute Temperature
Given an example;
Find the constant of lorentz number when the thermal conductivity is 44, the electrical conductivity is 11 and the absolute temperature is 2.
This implies that;
K = Thermal Conductivity = 44
σ = Electrical Conductivity = 11
T = Absolute Temperature = 2
L = K/σT
L = 44/(11)(2)
L = 44/(22)
L = 2
Therefore, the constant of lorentz number is 2.
Calculating the Thermal Conductivity when the Constant of Lorentz Number, the Electrical Conductivity and the Absolute Temperature is Given.
K = L (σT)
Where:
K = Thermal Conductivity
L = Constant of Lorentz Number
σ = Electrical Conductivity
T = Absolute Temperature
Let’s solve an example;
Find the thermal conductivity when the constant of lorentz number is 2, the electrical conductivity is 5 and the absolute temperature is 4.
This implies that;
L = Constant of Lorentz Number = 2
σ = Electrical Conductivity = 5
T = Absolute Temperature = 4
K = L (σT)
K = 2 (5)(4)
K = 40
Therefore, the thermal conductivity is 40.
Calculating the Electrical Conductivity when the Constant of Lorentz Number, the Thermal Conductivity and the Absolute Temperature is Given.
σ = K / L.T
Where:
σ = Electrical Conductivity
L = Constant of Lorentz Number
K = Thermal Conductivity
T = Absolute Temperature
Let’s solve an example;
Find the electrical conductivity when the constant of lorentz number is 4, the thermal conductivity is 32 and the absolute temperature is 2.
This implies that;
L = Constant of Lorentz Number = 4
K = Thermal Conductivity = 32
T = Absolute Temperature = 2
σ = K / L.T
σ = 32 / (4)(2)
σ = 32 / 8
σ = 4
Therefore, the electrical conductivity is 4.
Calculating the Absolute Temperature when the Constant of Lorentz Number, the Thermal Conductivity and the Electrical Conductivity is Given.
T = K / L.σ
Where:
T = Absolute Temperature
L = Constant of Lorentz Number
K = Thermal Conductivity
σ = Electrical Conductivity
Let’s solve an example;
Find the absolute temperature when the constant of lorentz number is 5, the thermal conductivity is 60 and the electrical conductivity is 2.
This implies that;
L = Constant of Lorentz Number = 5
K = Thermal Conductivity = 60
σ = Electrical Conductivity = 2
T = K / L.σ
T = 60 / (5)(2)
T = 60 / 10
T = 6
Therefore, the absolute temperature is 6.
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the constant of lorentz number.
To get the answer and workings of the constant of lorentz number using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
To get access to the professional version via web, you need to register and subscribe to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering.
Now, Click on Thermal Properities under Materials and Metallurgical
Now, Click on Constant of Lorentz Number under Thermal Properities
The screenshot below displays the page or activity to enter your values, to get the answer for the constant of lorentz number according to the respective parameter which is the Thermal Conductivity (K), Electrical Conductivity (σ) and Absolute Temperature (T).
Now, enter the values appropriately and accordingly for the parameters as required by the Thermal Conductivity (K) is 44, Electrical Conductivity (σ) is 11 and Absolute Temperature (T) is 2.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the constant of lorentz number and presents the formula, workings and steps too.