Fresh air load is an important factor in reducing overall building energy load as the building envelope insulation and various passive building technologies develop. A large amount of fresh air is needed to meet the high requirement of indoor hygiene and air quality. Although various energy-efficient technologies have been studied to reduce fresh air load, the energy savings are limited to only cold climate conditions. Traditionally, outdoor air is introduced to dilute indoor pollutants. In this paper, a novel independent CO₂ treatment unit (CTU) with the solid amine adsorbent (HP2MGL-PEI (600)-50) was investigated, which uses pollutant purification method instead of the conventional ventilation-based method to remove CO₂. Experimental investigation and robust theoretical energy simulations were carried out to validate the effectiveness and practicability of this unit and to evaluate the energy savings in real buildings. Experimental results show the CTU could effectively reduce the CO₂ concentration under normal atmospheric conditions in real buildings. Specifically, the adsorbent has a better adsorption performance with lower air velocity, but air velocity had a slight influence on desorption performance. The temperature has significant effects on both adsorption and desorption properties. An increment in adsorbent volume could also improve the adsorption performance. Simulations show that the indoor CO₂ concentration could be always controlled below 1000 ppm under proper control strategies. Thus, the amount of required fresh air could be dramatically decreased. The amount of energy savings of the reference building was approximately 13.18%. The static payback time of this new system was approximately 6.85 years.

随着建筑围护结构隔热和各种被动式建筑技术的发展，新鲜空气负荷是降低整体建筑能源负荷的重要因素。需要大量的新鲜空气来满足室内卫生和空气质量的高要求。尽管已经研究了各种节能技术来减少新鲜空气负荷，但节能仅限于寒冷的气候条件。传统上，引入室外空气以稀释室内污染物。在本文中，研究了一种新型独立的 CO ₂处理单元 (CTU) 与固体胺吸附剂 (HP2MGL-PEI (600)-50)，它使用污染物净化方法代替传统的基于通风的方法去除 CO ₂. 进行了实验研究和稳健的理论能源模拟，以验证该装置的有效性和实用性，并评估实际建筑物的节能效果。实验结果表明，在正常大气条件下，CTU 可有效降低真实建筑物中的CO ₂浓度。具体而言，吸附剂在较低的风速下具有更好的吸附性能，但风速对解吸性能的影响很小。温度对吸附和解吸性能都有显着影响。吸附剂体积的增加也可以提高吸附性能。模拟表明，室内 CO ₂在适当的控制策略下，浓度可以始终控制在 1000 ppm 以下。因此，可以显着减少所需的新鲜空气量。参考建筑的节能金额约为 13.18%。这个新系统的静态投资回收期约为 6.85 年。