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All Design & Selection Articles

Technical insights, innovative ideas, and design alternatives. These are developed by HVAC&R engineers for engineers, drafting specialists, and contractors responsible for design and selection. Each article dives into the why behind design decisions, explores alternative approaches, and examines innovative solutions shaping the HVAC&R industry. An interactive map connects design insight with relevant suppliers and design support—so ideas can be confidently applied and supported on your project
Acoustic Louvres
Acoustics
Air Handling Units
Air-Air Hear Recovery
Airports
Coil Coatings
Cold/Freezer Rooms
Corrosion
Fan Coil Units
FCU Controls
Heritage Buildings
Hospital
Kitchen Filtration
Kitchens
Medical Centre
Plantroom
Schools
Ultraviolet UVC
Vibration Isolation
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Screenshot 10 1 2026 71058 www.blygold.com .au

Corrosion Risk Management in HVAC-R

Corrosion Risk Management in HVAC-R In HVAC-R design, coil corrosion is best treated as a risk management problem. The risk is defined by two variables engineers deal with every day: Likelihood of corrosion occurring – driven primarily by the environment 2. Consequence if corrosion degrades performance or causes failure – driven by plant criticality Where both variables are medium or Read more…
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Acoustic Privacy in Medical Centres: Designing HVAC Return-Air Systems That Protect Confidentiality

Acoustic Privacy in Medical Centres: Designing HVAC Return-Air Systems That Protect Confidentiality   Acoustic privacy is a fundamental requirement in medical centres, specialist clinics, and healthcare facilities. Patients expect conversations with clinicians to remain confidential, and practitioners rely on environments that support trust, professionalism, and dignity.   While walls, doors, and room layouts are often carefully considered, HVAC systems—particularly return-air Read more…
Screenshot 31 12 2025 184450 www.gjwalker.com .au

Designing Enthalpy Heat Wheels for High Outside-Air Multi‑Storey Schools & Universities

Designing Enthalpy Heat Wheels for High Outside-Air Multi‑Storey Schools & Universities Multi-storey education buildings are “outside-air dominated” more often than designers expect. High occupant density, long operating hours, intermittent zone usage (lecture theatres, labs, gyms), and strict indoor air quality requirements mean that the outside air (OA) coil load—particularly latent load—can dominate system capacity. An enthalpy (total energy) heat recovery Read more…
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Using Exposed Chilled Water Fan Coil Units in Heritage Buildings

  Using Exposed Chilled Water Fan Coil Units in Heritage Buildings An Engineering Guide to Minimising Structural Disruption, Ductwork, and Penetrations   Designing air conditioning systems for heritage buildings is one of the most constrained and technically sensitive challenges faced by mechanical engineers. Unlike new construction, heritage projects are governed as much by conservation principles as by thermal comfort, energy Read more…
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Hospital HVAC Air Handling Unit Requirements in Australia

  Hospital HVAC Air Handling Unit Requirements in Australia A technical engineering guide to compliance, infection control, and air handling unit design   Hospital HVAC systems in Australia are engineered to perform a clinical function. Unlike commercial buildings, where HVAC is primarily concerned with comfort and energy efficiency, hospital air handling systems are required to actively support infection prevention, pressure Read more…
Screenshot 1 1 2026 113948 cdn.shopify.com

ENGINEERING HVAC-R VIBRATION ISOLATION: TECHNICAL DESIGN GUIDANCE FROM THE EMBELTON MECHANICAL ISOLATION GUIDES (PART 1 & PART 2)

ENGINEERING HVAC-R VIBRATION ISOLATION: TECHNICAL DESIGN GUIDANCE FROM THE EMBELTON MECHANICAL ISOLATION GUIDES (PART 1 & PART 2)   Vibration isolation in HVAC-R systems is fundamentally a dynamic systems problem governed by mass, stiffness, damping, excitation frequency, and structural response. The Mechanical Isolation Part 1 and Part 2 guides from Embelton provide a rigorous and practical framework for engineers and Read more…
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Why Melinex/Mylar Lining in Attenuators Is Imperative for Hygienic HVAC Applications

Why Melinex/Mylar Lining in Attenuators Is Imperative for Hygienic HVAC Applications   In healthcare, laboratory, cleanroom and other controlled‑environment ventilation systems, contamination control isn’t optional — it’s mandated by standards that explicitly require contaminant‑free, cleanable and non‑fibre‑releasing air path surfaces. Given engineering standards such as AS/NZS 3666.1:2011, ISO 14644‑1:2015 and AS/NZS 2243.3:2022 are referenced in legislation, design briefs, tenders, and Read more…
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Kitchen Hood Filter Options – Including Prefilters

Selecting the Right Filtration to Protect Kitchens, Tenants, and Base-Building Assets Commercial kitchen exhaust systems operate in one of the most aggressive environments in any building. Grease-laden air, high temperatures, and long operating hours place constant stress on hoods, ductwork, dampers, and exhaust fans. The performance of the entire system is heavily influenced by a single component: the kitchen hood Read more…
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Using UV-C to Control Mould in Cold Rooms and Freezer Rooms

Why a counter-intuitive problem exists — and where UV-C becomes a precise engineering solution At first glance, mould growth in cold rooms and freezer rooms feels counter-intuitive.Cold temperatures are commonly associated with preservation, hygiene, and microbial suppression. Designers, operators, and even auditors often assume that low temperature alone prevents biological growth. However, real-world cold storage facilities consistently experience mould growth Read more…
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Designing a VRF plantroom with acoustic louvres

A performance-led approach to noise, airflow, footprint, and compliance Designing a VRF plantroom or rooftop condenser compound is rarely just a mechanical exercise. In residential and mixed-use projects, VRF outdoor units sit at the intersection of planning approval (DA) noise limits, tight rooftop footprints, and strict manufacturer airflow requirements tied to warranty. This is why acoustic louvres—rather than solid acoustic Read more…