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Heating and Cooling VRF System
Paul Evans
-
Dec 16, 2022
0
Pump Impeller Basics
Paul Evans
-
Dec 14, 2022
0
Steam Heating System Basics
Paul Evans
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Apr 4, 2022
2
Constant Air Volume-CAV
Paul Evans
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Feb 26, 2021
1
Constant Air Volume – CAV
Paul Evans
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Jul 2, 2019
1
Filter Driers How do they work
Paul Evans
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Feb 7, 2019
0
RTU Rooftop Units explained
Paul Evans
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Nov 11, 2018
6
Air Handling Units Explained
Paul Evans
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Sep 26, 2018
32
Ductwork sizing, calculation and design for efficiency
Paul Evans
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Jul 3, 2018
22
Energy savings from replacing a chiller
Paul Evans
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May 30, 2018
3
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Latching Relay Basics
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Jan 16, 2022
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R600 (Butane) Pressure Enthalpy Chart
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Apr 14, 2019
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Load Alternator Relays
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Feb 25, 2021
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R114 Pressure Enthalpy Chart
Paul Evans
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May 5, 2019
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Volume flow rate explained (m3/s)
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May 4, 2015
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Arc length, how to calculate
Paul Evans
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May 13, 2015
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Latest Content
Why This Circuit Works When It Shouldn’t
Paul Evans
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Jan 12, 2026
0
In this article we explain how a simple Joule Thief circuit boosts low voltage using inductors, transistors, and Faraday’s law. Learn how it works,...
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