Anatomy of an Air Handling Unit An AHU conditions outdoor air before it enters a building. The core components are: the supply fan, the exhaust fan, filters, coils (heating/cooling), and – increasingly – a heat recovery core. How these are arranged decides both air quality and energy use. Fans Supply and exhaust fans move the […]
Heat Pump Waste Heat Recovery: Lifting Low-Grade Heat
The low-grade problem Much recoverable heat is low-grade – 25-60C drain water, vent air, or process streams. Too cool to use directly, but too warm to waste. A heat pump lifts it to a useful temperature using a little electrical work. How it pairs with air-to-air recovery Start with passive air-to-air or air-to-water recovery to […]
District Energy Station Heat Recovery: Sharing Heat Across Buildings
One plant, many buildings A district energy station produces heating and/or cooling centrally and distributes it through a network to multiple buildings. Recovery is built in at two levels: the central plant reuses its own waste heat, and buildings return low-grade heat to the network. CHP at the core Many stations run combined heat and […]
Cold Chain Logistics Heat Recovery: From Cold Store to Condenser
A cold chain is a heat chain Cold stores, freezers, and refrigerated warehouses move heat out continuously. That rejected heat is a free resource – if you capture it. Cold-chain recovery turns a pure energy cost into a partial energy gain. Where the heat is Condenser reject – the biggest, hottest stream (30-50C). Route it […]
Commercial Building Heat Recovery: Offices, Hotels, Mixed-Use
The everyday opportunity Offices, hotels, and mixed-use buildings run ventilation around the clock with high fresh-air rates. Recovering that exhaust energy is the single biggest HVAC saving for most commercial stock. Technology mix Offices – balanced AHUs favor plate or rotary recovery; see AHU recovery. Hotels – guest-room ventilation plus laundry and pool loads; pair […]
Laundry Heat Recovery: Reusing Wash and Dryer Exhaust
Laundries are heat hogs Commercial laundries heat vast volumes of water and run dryer exhaust hot and moist all day. Up to 70% of their energy can leave as warm water and humid air. Recovery is the fastest payback in the sector. Two streams to catch Wash water – drain water at 40-60C feeds a […]
Data Center Liquid Cooling Heat Recovery: Capturing Server Heat
From air to liquid As rack densities climb, air cooling hits its limit. Liquid cooling – cold plates, rear-door coolers, or immersion – captures server heat directly in water, at 30-50C. That warm water is a prime recovery stream. What you recover Facility heating – warm loops heat offices or adjacent buildings via air-to-water recovery. […]