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In this article I would like to show you the connection between energy, work and quantity of heat. This basic is relatively easy to understand and important for understanding more complex facts.
In a physical system, energy 
is the ability to do work 
. So by doing work, energy is transformed. And since always as much energy is converted as work is done, one can say that energy equals work 
. The SI unity of work is Joule ![[J]](https://cdn.buildingservicestutor.com/wp-content/ql-cache/quicklatex.com-b5e082837a09b406d3f6300a2c7d6499_l3.png "Rendered by QuickLaTeX.com")
.
The following applies: 
(1 Joule = 1 Newton Metre = 1 Watt Second).
Conversion of the units:
-> 
-> 
Normally the formula character is used for the work. In heating technology, however, the work is referred to as the quantity of heat and has the 
symbol. The physical terms energy, work and quantity of heat are therefore equal to 
.
Different quantities are important for determining the quantity of heat. These include, among others, the following:
- specific heat capacity
- Density, Volume and Mass
- Output and final temperature
- Heat flow rate (power)
You can calculate the quantity of heat (work) with the following formulas:
-> 
-> 
-> 
With this knowledge you have acquired one of the most important basics of heating technology. If you have any questions I’m looking forward to see your comments
Greetings! Martin
Further links and sources:
Wikipedia – Work (physics)
Wikipedia – Energy
Wikipedia – kWh
Wikipedia – Power (physics)
