Industrial curing and process ovens are among the most energy-hungry machines on a factory floor. They hold product at precise temperatures—often 150 to 250 °C for powders, paints, composites and food—for minutes to hours at a time, and they do it continuously. Two things make them expensive to run: the energy needed to raise and […]
Data Center Support-Space Heat Recovery: Offices, Labs and Loading Bays
When engineers talk about data center heat recovery, the conversation almost always jumps straight to the white space—the server halls with their enormous, concentrated IT load. That is where the kilowatts are biggest, and it is where most recovery projects start. But a modern data center is a small campus, and the offices, network operations […]
HRV vs ERV: The Difference That Decides Your Building’s Comfort
Walk into any ventilation specification meeting and you will hear the letters HRV and ERV used almost interchangeably. They should not be. A heat recovery ventilator (HRV) and an energy recovery ventilator (ERV) solve the same problem—bringing fresh outdoor air in while throwing away as little conditioning energy as possible—but they handle moisture very differently, […]
Understanding Pressure Drop in Air-to-Air Heat Exchangers
Every air-to-air heat exchanger sits between two competing masters: it must recover as much energy as possible while letting the fan push air through with the least resistance. The measure of that resistance is pressure drop, and it is one of the most misunderstood numbers in HVAC specification. A low pressure drop looks cheap on […]
Plate Heat Exchanger Cleaning and Maintenance: Keeping Effectiveness Up
Air-to-air plate heat exchangers are deceptively simple devices, but their performance lives or dies on a clean surface. In any ventilation system the core is the only component that actually moves energy from one airstream to another, and when dust, oil aerosol, biofilm or mineral scale coats the plates, both the heat-transfer coefficient and the […]
Cold Storage and Freezer Heat Recovery: Trickling Warm Air Back In
Cold storage and freezer warehouses are designed to keep heat out, yet they constantly generate small, unavoidable heat loads and must ventilate specific areas to stay safe and code-compliant. The paradox of recovery in a refrigerated building is that you never want to warm the cold space, but you often must condition the air at […]
Brewery & Distillery Heat Recovery: From Coppers to Mash Tun
A brewery or distillery is a heat engine dressed up as a beverage plant. From mash tun heating and wort boiling to still operation and CIP rinsing, these processes consume thermal energy in bursts that dwarf the lighting and comfort loads of the building. At the same time, every one of those hot steps produces […]
Retrofitting Heat Recovery Ventilation into Older Buildings
Older commercial and institutional buildings were rarely designed with energy recovery in mind. They were built when fuel was cheap and ventilation was treated as a simple exhaust-and-make-up-air problem. Today, with tighter efficiency expectations and higher energy prices, those same buildings leak heat through every cubic metre of ventilated air. Retrofitting heat recovery ventilation (HRV) […]
Paint / Spray Booth Heat Recovery: Recycling Warm Make-Up Air Safely
Paint and powder-coating spray booths move enormous volumes of air. To keep solvent and overspray concentrations safely below explosive limits, fire codes require a high rate of exhaust, and an equal volume of tempered make-up air must be drawn in to replace it. In winter that make-up air arrives at outdoor temperature and must be […]
Desiccant + Enthalpy Wheel Combinations for Humid Climates
In hot, humid climates the hardest part of air conditioning is not the heat, it is the moisture. Conventional cooling coils can lower the air temperature, but removing latent load cheaply requires either over-cooling and then reheating, or a separate dehumidification step. A desiccant wheel paired with an enthalpy recovery wheel answers both problems at […]