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Fundamentals of Building Services Engineering

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Building services engineering intro

What is Building Services Engineering? Building services engineering is the design, installation and maintenance of almost every mechanical or electrical aspect within a building. Most...



chillers how do they work learn hvac

Chillers – What are they? HVAC

All building need air conditioning. For smaller buildings this can be provided by A/C units but once the building reaches a certain size it...
chiller components parts of a chiller evaporator compressor condenser expansion valve power unit controls

Chillers – Main components

The main chiller components are the Compressor, Condenser, Evaporator, Expansion Valve, Power Panel, Controls unit and the Water Box. In this article we will...
Chiller cooling capacity vane guides

Chiller Cooling Capacity Control

How do chillers control their cooling capacity? One of the most common ways, for centrifugal type chillers, is to use vane guides. Vane guides...

Cooling Towers

Purpose of Cooling Towers

If you look at the roof of most high rise commercial buildings, or even around industrial sites and power stations, you'll notice these large...
How Cooling Towers Work

How Cooling Towers work

In this topic, we will look at how a cooling tower operates. This will cover the basic workings of  the most common type of...


the refrigeration cycle explained

Refrigeration cycle, essential knowledge.

A fluid, known as a refrigerant, moves between four key stages in refrigeration cycle. As it does so, it changes in pressure and temperature,...


Primary and Secondary circuits in centralised hvac systems

Primary and Secondary circuits in centralised HVAC systems

With regards to centralised HVAC heating and cooling systems, you will usually hear the terms Primary and Secondary circuits. This refers to particular parts...


Guide to lighting and power cables

Guide to Lighting and Power cables

In order for us to be able to use our lights and appliances we need to connect them to the main power supply. We will...