Which Climate Zone Mandates Heat Recovery? ASHRAE 90.1 §6.5.6.1 Explained If you spec HVAC in the U.S., you have almost certainly been asked: “In which climate zones is energy recovery (heat recovery) required by code?” The short answer is that ASHRAE 90.1 does not mandate recovery in every zone — it triggers it above airflow […]
Data Center Waste Heat Recovery: The Complete Engineering Guide (2026)
Data Center Waste Heat Recovery: The Complete Engineering Guide (2026) Data centers are on track to consume ~1,000 TWh of electricity per year by 2030 (IEA), up from roughly 103 GW of installed capacity today heading toward 200 GW. Almost none of that energy disappears: 90–95% of the electricity a data center draws is converted […]
Liquid Cooling & Immersion Server Waste Heat Reuse
Liquid Cooling & Immersion Server Waste Heat Reuse: Turning 45°C Hot Water into District Heat As rack densities climb with AI training and inference, air cooling is hitting its limit. The industry is shifting to direct-to-chip liquid cooling and immersion — and that shift is a gift for liquid cooling waste heat reuse, because it […]
BESS Thermal Management: Heat Recovery and Cell-Temperature Control
BESS Thermal Management: Heat Recovery and Cell-Temperature Control for Battery Storage Battery Energy Storage Systems (BESS) are being deployed as fast as data centers — often right next to them. But a battery is a thermal device: its life, safety and round-trip efficiency are set by temperature. BESS thermal management is therefore both a reliability […]
Data Center Support-Space Heat Recovery
엔지니어가 데이터센터 열회수에 대해 이야기할 때 대화는 거의 항상 화이트 스페이스－막대하고 집중된 IT 부하를 가진 서버실－로 곧장 튀어갑니다. 그곳이 킬로와트가 가장 크고 대부분의 회수 프로젝트가 시작되는 곳입니다. 그러나 현대적인 데이터센터는 작은 캠퍼스이며, 서버 주변의 사무실, 네트워크 운영 센터(NOC), 실험실, 작업장, 하역장, 휴게실도 끊임없이 환기되며 매시간 조절된 공기를 외부로 배출합니다。…
HRV 대 ERV: 건물의 쾌적성을 결정하는 차이
어느 환기 설계 회의에 들어가 보면 HRV와 ERV라는 용어가 거의 바꿔 쓰이는 것을 듣게 됩니다. 그래서는 안 됩니다. 열회수 환기장치(HRV)와 전열교환기(ERV)는 동일한 문제를 해결합니다－신선한 외기를 들여보내면서 조절 에너지를 최대한 적게 낭비하는 것－하지만 습기 처리가 매우 다르며, 그 차이가 쾌적성, 습도 제어, 심지어 특정 기후에서의 초기 비용을 결정합니다。…
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) […]
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 […]
Where China’s Heat-Recovery Demand Comes From in 2026
China’s recovery-equipment boom is not one market — it is four, pulling different products. Understanding the split helps overseas buyers read a supplier’s catalogue. HVAC & new buildings China’s building-energy rules now require all new urban buildings to meet green-building standards, and large or public buildings are pushing energy-recovery ventilation. In the cold north-east, clean-heating […]
CRH 2026: HVAC Expo Takeaways on Recovery
The 37th China Refrigeration Expo (CRH 2026) ran 8–10 April 2026 at the Beijing Capital International Exhibition & Convention Center. With roughly 115,000 m² of halls, 1,041 exhibitors from 30 countries and more than 80,000 professional visitors, it remains the single best window into China’s HVAC&R supply chain. The official theme — “Digital intelligence shapes cooling […]