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 126 items in 6 pages
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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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Jul 1, 2019 – This Skills Workshop looks at how noise is generated in ductwork systems and transmitted to the air conditioned or adjacent spaces. It also looks at strategies you can use to reduce ductwork noise.
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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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Apr 1, 2019 – This Skills Workshop is taken from the Institute of Refrigeration’s 2018 Safety Code of Practice.
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Feb 28, 2019 – This Skills Workshop provides an overview of the theory and fundamentals of the science of particulate air filtration.
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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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Oct 1, 2018 – This skills workshop takes a closer look at modern energy efficiency features in residential air conditioning systems and explains how they work and how they can best be used.
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Sep 1, 2018 – This skills workshop provides methods of sizing the suction line, with an example.
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Aug 1, 2018 – This Skills Workshop sets out a procedure for duct design and provides an example of duct design for a residential job.
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Jul 1, 2018 – This Skills Workshop discusses the performance rating of fans, the tests used to rate performance, how test data is turned into performance information, the limitations of the test methods and the data produced.
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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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May 1, 2018 – One of the best methods of connecting parts together in a refrigeration system is to use welded (brazed) joints. This type of joint is used to connect tube to tube, or tube to fitting. It is leakproof, permanent and gives maximum strength.
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Apr 1, 2018 – This Skills Workshop looks at the content of AS/NZS 5149.1:2016 Part 1 Definitions, classification and selection criteria and AS/NZS 5149.2:2016 Part 2 Design, construction, testing, marking and documentation.
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Mar 1, 2018 – This Skills Workshop covers the main refrigeration service faults, dealing with refrigeration system faults and electrical faults where the one may be indistinguishable from the other, or is a direct cause of the other.
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Feb 1, 2018 – This Skills Workshop will identify the core opportunities to capitalise on in order to ensure you get the right solution for your situation.
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Nov 1, 2017 – This is an introductory guide to reciprocating or Type 1 compressors, explaining the role compressors play in the vapour-compression system, and detailing its relationship to refrigerant.
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Oct 1, 2017 – This guide reviews the model WHS Act and associated regulations particularly with respect to its application to, and impact on, the heating, ventilation, air conditioning, and refrigeration (HVAC&R) industry.
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Sep 1, 2017 – Variable head-pressure control and variable inter-stage pressure control (VIPC) are strategies which aim to improve a plant’s energy efficiency by optimising both the head pressure and the intermediate-stage (inter-stage) pressure of the refrigeratio
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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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Jul 1, 2017 – Over the past decade, the number of condensing boilers and water heaters being installed has continued to rise. All indications are that this trend will continue and eventually become mandatory due to their higher energy efficiency and cleaner emissi
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Jun 1, 2017 – Standards Australia has recently adopted and published the new refrigeration safety and environmental standard; AS/NZS 5149 Refrigerating systems and heat pumps – Safety and environmental requirements: Parts 1 to 4, replacing AS/NZS 1677.2:1998. The