Analysis of a DOAS operation in different Spanish climates using an experimentally validated TRNSYS model

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Ventilation Pub Date : 2020-04-02 DOI:10.1080/14733315.2019.1579485

P. Martínez, P. Martínez, V. Soto, J. Rodriguez, L. Bujedo

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引用次数: 1

Abstract

Abstract Current ventilation airflow rates imposed by building regulations eventually force HVAC systems to remove high latent loads. Dedicated outdoor air systems (DOASs) equipped with a desiccant wheel, are an alternative to conventional refrigeration equipment for humidity control in buildings. This paper studies the operation of a DOAS intended to remove the ventilation air and space latent load in different Spanish climates during the summer season. The model developed in TRNSYS was validated with experimental data using the root mean standard error (RMSE). Maximum RMSE of 0.94 °C and 0.472 g/kg were obtained for the temperatures and humidity ratios of the process and regeneration airflows. The RMSE for the compressor power input was of 52.2 W. The results obtained with the developed model showed that the DOAS exhibited better performance in humid climates with moderate temperatures (Bilbao and Barcelona). It was also found that its application in dry climates (Madrid) was not appropriate, and that a high outdoor temperature lowered the DOAS efficiency when comparing cities with similar latent loads (Bilbao and Sevilla) or when comparing residential and commercial schedules.

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用实验验证的TRNSYS模式分析西班牙不同气候条件下DOAS操作

摘要当前建筑法规规定的通风气流率最终迫使暖通空调系统去除高潜在负荷。配有干燥剂轮的专用室外空气系统(DOASs)是建筑物中用于控制湿度的传统制冷设备的替代方案。本文研究了DOAS在西班牙夏季不同气候条件下去除通风空气和空间潜在负荷的运行情况。在TRNSYS中开发的模型使用实验数据使用均方根标准误差(RMSE)进行验证。工艺和再生气流的温度和湿度比的最大RMSE为0.94°C和0.472 g/kg。压缩机输入功率的RMSE为52.2 W。模拟结果表明，DOAS在温和潮湿气候条件下(毕尔巴鄂和巴塞罗那)表现出较好的性能。研究还发现，它在干燥气候(马德里)的应用并不合适，在比较潜在负荷相似的城市(毕尔巴鄂和塞维利亚)或比较住宅和商业时间表时，室外高温降低了DOAS效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Ventilation CONSTRUCTION & BUILDING TECHNOLOGY-ENERGY & FUELS

CiteScore

3.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： This is a peer reviewed journal aimed at providing the latest information on research and application. Topics include: • New ideas concerned with the development or application of ventilation; • Validated case studies demonstrating the performance of ventilation strategies; • Information on needs and solutions for specific building types including: offices, dwellings, schools, hospitals, parking garages, urban buildings and recreational buildings etc; • Developments in numerical methods; • Measurement techniques; • Related issues in which the impact of ventilation plays an important role (e.g. the interaction of ventilation with air quality, health and comfort); • Energy issues related to ventilation (e.g. low energy systems, ventilation heating and cooling loss); • Driving forces (weather data, fan performance etc).