Retrofitting heat recovery into an existing building is different from designing new. Space, duct layout, and control integration usually drive the choice more than peak efficiency. Step 1: Audit the Air Streams Confirm there is a dedicated exhaust and a matching supply. Measure airflow (m³/h or CFM) and temperature profiles. Note operating hours — recovery […]
换热器压降与风机能耗
A heat exchanger only saves energy if the recovered heat exceeds the extra electricity needed to push air through it. That trade-off is governed by pressure drop. What Drives Pressure Drop? Face velocity (higher speed = steeper rise) Core depth and plate count Surface corrugation and coating thickness Dust or fiber loading on fins Reading […]
焓回收 vs 显热回收
Heat recovery is often described as “sensible” or “enthalpy.” The difference decides comfort, energy savings, and which technology to specify. Sensible Recovery Transfers temperature only. Plate exchangers, heat pipes, and run-around coils are sensible devices. They pre-heat or pre-cool the supply air without adding or removing moisture. Enthalpy Recovery Transfers both temperature and moisture. Enthalpy […]
海洋与腐蚀环境换热器
Ships, offshore platforms, and chemical plants expose heat exchangers to salt spray, high humidity, and aggressive gases. In these corrosive environments, material selection is as important as thermal design. Material Options Hydrophilic aluminum: Good for clean marine ventilation, low cost. Stainless steel (304/316L): Resists salt and many chemicals; heavier and pricier. Epoxy / phenolic coated […]
涂装与喷漆房热回收
Spray booths and curing ovens exhaust large volumes of heated air, often loaded with overspray, solvents, or moisture. Replacing that air with conditioned make-up air is expensive. Coating booth heat recovery captures the heat without mixing contaminated exhaust back into the supply. Why Separation Matters Exhaust from painting contains VOCs and particulate overspray. Cross-contamination is […]
空气处理机组 (AHU) 与热回收集成
An air handling unit (AHU) conditions outdoor air before it enters a building. Without recovery, that outdoor air must be heated or cooled from scratch every hour. Adding a heat recovery core to the AHU is the single highest-impact energy measure for ventilation systems. Where the Exchanger Sits in an AHU The recovery core is […]
矿井通风热回收：降低风机负荷与结霜
Underground mines move enormous airflows to dilute gases and control temperature. In cold regions, that warm exhaust is often wasted while fresh intake air must be heated to prevent downcast freezing and ice buildup. Mine ventilation heat recovery closes that loop. Why Heat Recovery Matters Underground Pre-heating intake air reduces boiler or electric heater load. […]
热回收效率指标详解
When comparing heat recovery products, efficiency numbers can be confusing. Manufacturers may quote temperature effectiveness, sensible recovery efficiency, or total energy recovery. Understanding these metrics helps you make fair comparisons and avoid under- or over-sizing equipment. Temperature Effectiveness (Sensible) Sensible effectiveness is the most common metric for air-to-air heat exchangers. It compares the actual temperature […]
板式 vs 转轮 vs 热管：如何选换热器
Choosing the right air-to-air heat exchanger depends on airflow, temperature, humidity, installation space, and contamination risk. This guide compares the three most common technologies. Quick Comparison Feature Plate Exchanger Rotary Wheel Heat Pipe Efficiency High (70–85 %) High (75–85 %) Moderate (50–70 %) Moving parts None Motor/bearings None Cross-contamination Very low Low with purge Zero […]
工业干燥与农业的热回收
Industrial drying accounts for a large share of energy consumption in food processing, wood, textiles, ceramics, and agriculture. Most of that energy leaves the dryer as hot, humid exhaust air. A well-designed heat recovery system can recapture much of that energy and pre-heat the incoming drying air. Why Drying Exhaust Is Ideal for Heat Recovery […]