基于碳捕集的通风系统中热交换器的优化配置

Q4 Energy
J. P. Harrouz, K. Ghali, N. Ghaddar
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引用次数: 0

摘要

通过调节水和二氧化碳的浓度来达到可接受的室内空气质量水平对居住者的健康很重要。传统的技术依赖于提供除湿的室外空气来稀释这些物种到它们的健康范围内。通常,室外空气除湿是使用蒸汽压缩冷却作为独立系统或与干燥剂除湿机集成。众所周知,这些方法是能源密集型的,特别是在炎热潮湿的气候下。因此,提出了利用室内空气进行吸附式二氧化碳捕获的通风系统。这些系统使用吸附剂填充床对室内空气进行除湿和脱碳,然后将其合理冷却并供应给空间。为了这些系统的节能运行,热回收装置是必要的。在这项工作中,开发了热和质量平衡模型,并用于确定热回收装置的最佳放置位置。研究发现,在脱碳床前加一个热交换器可以提高mof的容量,使质量要求降低33%。与热交换器放置在两个空气处理系统之后的配置相比,这同时减少了43.5%和25%的热能和电能消耗。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimal Placement of Heat Exchangers in a Carbon Capture-Based Ventilation System
Achieving acceptable air quality levels in indoor spaces by regulating the concentrations of H2O and CO2 is important for occupant health. Conventional techniques rely on supplying dehumidified outdoor air to dilute these species to within their healthy ranges. Typically, the outdoor air dehumidification is conducted using vapor compression cooling either as standalone systems or integrated with desiccant dehumidifiers. These methods are known to be energy intensive, especially in hot and humid climates. Ventilation systems using indoor air with adsorption-based CO2 capture are thus proposed. These systems use adsorbent packed beds to dehumidify and decarbonize the indoor air before it is sensibly cooled and supplied to the space. For energy efficient operation of these systems, heat recovery units are necessary. In this work, heat and mass balance models were developed and used to determine the optimal placement location of the heat recovery units. It was found that a heat exchanger preceding the decarbonization bed increased the MOFs capacity, resulting in 33 % lower mass requirements. This was accompanied by a reduction in the thermal and electrical energy consumption by 43.5 % and 25 %, respectively, with respect to the configuration where the heat exchanger was placed after both air treatment systems.
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来源期刊
Renewable Energy and Power Quality Journal
Renewable Energy and Power Quality Journal Energy-Energy Engineering and Power Technology
CiteScore
0.70
自引率
0.00%
发文量
147
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