Commercial Building Fresh-Air System Total Heat Recovery

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Project Background

A certain 5A-grade office building has a large fresh-air volume during the transitional season, concentrating the load on the HVAC system.

Challenges

Large fresh-air volumes impose heavy cooling/heating load, especially in the shoulder season, keeping energy high.

Solution

Deploy ceiling-mountedEnergy-Recovery Ventilator (ERV) Unit, recovering exhaust energy through the rotary total-heat wheel.

Results

HVAC system energy reduced by 20%, with improved indoor CO₂ levels and enhanced comfort.

商业楼宇全热回收

商业楼宇新风需求大、空调运行时间长，全热回收可在引入新风的同时回收排风中的冷热量与湿度，夏季节约制冷、冬季节约供热。结合变频与 CO₂ 联动控制，可在保障室内空气品质的前提下实现可观节能，投资回收期通常较短。

控制策略

建议按室内 CO₂ 与焓差联动新风热回收与变频，过渡季加大新风比利用自然冷源，进一步降低空调能耗。

控制策略

建议按室内 CO₂ 与焓差联动新风热回收与变频，过渡季加大新风比利用自然冷源，进一步降低空调能耗并改善室内空气品质，实现舒适与节能的双赢。

楼宇改造可结合 BA 系统，实现热回收的自动最优运行；按人流与室外气象动态调节，能进一步挖掘节能潜力。

建议将热回收控制接入楼宇自控系统，按人流密度与室外气象动态调节新风与变频，把节能从静态设计延伸到运行优化的全过程，持续挖掘节能潜力。

结合能耗计量，可量化热回收收益，为持续运营优化提供数据基础，也让节能成效可见、可考核、可持续改进。