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Chiller Cooling Capacity – How to calculate
How to calculate the cooling capacity of a chiller. Chillers provide chilled water which is then used to provide air conditioning within buildings. The...
Pump Head Pressure Basics
Pump head pressure basics, learn why pumps read pressure in height and call it head pressure.
Scroll to the bottom to watch the YouTube tutorial.
Head...
How Multispeed pumps work
Have you ever wondered how multispeed pumps work? In this article, we'll explain how multispeed pumps work.
Scroll to the bottom to watch the YouTube...
MOSFET vs Transistor vs Relay: Most People Get This Wrong
Learn the key differences between MOSFETs, transistors and relays. This beginner-friendly electronics tutorial explains how BJTs and MOSFETs work, why they are used for...
Why This Doesn’t Make You Safe
Sponsored by Fluke.
How RCDs and GFCIs prevent electric shock. Many people think a standard circuit breaker (MCB) protects them, but it only protects...
Combine date and time cells in excel
You can easily combine date and time of two different cells in excel, all you have to do is enter the following into the formula...
How to combine multiple cells in excel
Combine two cells in excel with a space between.
You can easily combine two different cells in excel, all you need to do is enter...
SI Units
The SI units of measurement are based on seven quantities, other commonly used quantities are derived from these.
SI Base units:
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Volume of a sphere
The volume of a sphere can be calculated using the following formula
V = (4÷3) x Π x r3
Where
V = Volume (m3)Π = Pi (3.142 approx)r...
Scroll Compressors
Scroll to the bottom to watch the YouTube tutorial.
Scroll compressors look something like this. They come in many shapes and sizes depending on...
Electric Heating
Why is electric heating used? In this article, we'll explain the benefits of electric heating and where it is used. Basic calculations, thermal imaging,...
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