HVAC Skills Workshops

 
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Oct 30, 2019 – Curated by ASHRAE and UN Environment, the purpose of this month’s Skills Workshop is to provide an update on ASHRAE standards for refrigerants and to introduce the new refrigerants that have been awarded an «R» number over the last few years and intr
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Oct 1, 2019 – This Skills Workshop provides a broad overview of control system fundamentals and explains some of the common terms used when discussing control systems.
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Sep 1, 2019 – This Skills Workshop takes you through the options available and critical considerations for good coil design.
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Jun 1, 2019 – Managing humidity is one of the key functions of an HVAC system. This Skills Workshop looks at some of the techniques used to do this, as well as the thermodynamic processes behind it.
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May 1, 2019 – This Skills Workshop is taken from the AIRAH Best Practice Guideline for HVAC Hygiene. The section presented here looks specifically at system inspection and assessment.
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Jan 30, 2019 – This Skills Workshop looks at methods for controlling condensation in mechanical services in hot, humid tropical climates.
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Nov 1, 2018 – This Skills Workshop looks at the calibration and use of instruments, specifically those used for air measuring.
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Jun 1, 2018 – This skills workshop describes tasks that should be conducted during commissioning of hydronic heating and cooling systems before they go into operation.
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Aug 1, 2017 – Electrode and resistive are the two main types of electric steam humidifier an HVAC&R contractor will buy and install. From a contractor’s perspective, the main considerations when selecting a unit are often purchase cost and ease of installation. Fo
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Oct 1, 2016 – Understanding pressure control and the technology involved is a challenge that faces both apprentices and experienced technicians alike. Pressure-control valves are found in virtually every hydraulic system, and they assist in a variety of functions,
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Sep 1, 2016 – Gas is an important energy source and significant cost for many organisations throughout Australia. The diversity of uses and equipment involved can make gas consumption difficult and expensive to measure and monitor. However, by having a clear set o
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Aug 1, 2016 – Gas is an important energy source and significant cost for many organisations throughout Australia. The diversity of uses and equipment involved can make gas consumption difficult and expensive to measure and monitor. However, by having a clear set o
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Jul 1, 2016 – This month, we’ll look into the optimisation strategy of applying variable speed drive (VSD) controllers to pumps for head pressure control of single water-cooled direct expansion (DX) units. By controlling the head pressure of water-cooled conden
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Jun 1, 2016 – This month, we delve into demand control ventilation (DCV) – a control and optimisation strategy that modulates the volume exchange of fresh or outside air into an enclosed space by mechanical air conditioning equipment. DCV impacts overall building
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Feb 1, 2016 – To kick off 2016, we will continue our look at the key strategies for optimising control parameters used to control individual plant within HVAC systems. This month, we delve into temperature reset strategies – whereby the temperature (or grade) of t
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Nov 1, 2015 – Following on from our discussions regarding energy consumption reduction methods involving air flows and ventilation systems, we will now showcase a number of key strategies for optimising control parameters used to control individual plant within HV
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Oct 1, 2015 – Continuing on from last month’s insight into energy consumption reduction approaches involving air flows and ventilation systems, we will look at night purge – a strategy that can produce up to 20 per cent compressor start-up energy reduction.
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Sep 1, 2015 – Over the next few months, we will be giving readers an insight into an ever-evolving topic of HVAC&R Optimisation. First up, we will discuss energy consumption reduction approaches involving air flows and ventilation systems – more specifically, econ
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Aug 1, 2015 – Resetting and optimising the space or zone temperature set and points can reduce the energy consumption of the associated HVAC systems, without overly compromising the comfort of building occupants.
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Apr 1, 2014 – Different types of boilers will provide different levels of energy efficiency, but it is also important to understand optimal installation, operation and maintenance practices.
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Nov 1, 2013 – In the last Skills Workshop, we looked at the installation of centrifugal pumps. In this one, we explore commissioning.
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Oct 1, 2013 – This Skills Workshop provides a brief overview of the pump and associated system installation process for centrifugal pumps.
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Jul 1, 2013 – In the third and final part of our chiller technology Skills Workshop series, we look at piping configurations for maximum efficiency.
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Jun 1, 2013 – Variable-flow chilled water plants became a practical reality when chiller equipment and system controls capable of handling variable primary (chilled water) flow (VPF) were introduced in the early 2000s.
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May 1, 2013 – For as long as chilled water plants have been designed and operated, the use of “rule of thumb” operating conditions has been the norm.