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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...
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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...
chiller efficiency title how to calculate chiller efficiency

Chiller Efficiency How to calculate

How to calculate the efficiency of a chiller. Chillers are one of the largest energy consumers within a building and this has a big...
chiller cooling capacity calculation

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...
chiller oil lubrication title

Chiller Oil Lubrication Circuit

How does a chiller oil lubrication system work? Chillers need to force oil around some of its internal components to provide lubrication and remove...
How Air Cooled Chillers work

How Air Cooled Chillers Work

In this article we will be looking at how air cooled chillers work. Air cooled chillers are very common, especially in small to medium...

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,...


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Pump calculations

In this article we learn how to perform pump calculations in both imperial and metric units to assess pumping performance following the change of...
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...