Can whole building energy models outperform numerical models, when forecasting performance of indirect evaporative cooling systems?
Can whole building energy models outperform numerical models, when forecasting performance of indirect evaporative cooling systems?
复制标题
在预测间接蒸发冷却系统的性能时，整个建筑能源模型能否优于数值模型？
DOI：
10.1016/j.enconman.2020.112886
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发表时间：
2020
影响因子：
10.4
通讯作者：
Badiei A
中科院分区：
文献类型：
--
作者：
Badiei A
本文提出了一个整体建筑能源建模工作，其中包括最先进的间接蒸发冷却系统。该模型经过了实际经验数据的标定和验证，能够较好地反映系统的实际性能，可靠性较高。所研究的系统是一种新型的高性能露点冷却器（DPC），该系统采用无导波式热交换器（HMX）。通过在源代码级别对系统和建筑特性的详细描述，将DPC建模为整个建筑能源模型的一部分。所建立的模式已在间接蒸发冷却（IEC）系统可运行的所有不同气候条件下进行了模拟，即：亚热带热沙漠、湿润大陆、地中海和热沙漠气候。通过对同一系统的实验和数值模型对性能预测进行了验证，并对如何高效地对上述系统进行建模进行了详细的研究。经校正和实证验证的整栋建筑能耗模型预测了露点蒸发冷却系统的关键性能参数，平均误差值限制在4.1%以内。实验和全建筑能耗模拟记录的最高COP值分别为51.1和49。与数值模型相比，通过将建筑侧参数纳入模型，整个建筑能量模型能够更好地预测露点蒸发冷却器的性能。这项建模工作为建筑环境中先进冷却系统的详细调查铺平了道路，以实现系统在各种建筑和操作条件下的优化性能。
This paper presents a whole building energy modelling work incorporating a state-of-the-art indirect evaporative cooling system. The model is calibrated and validated with real-life empirical data, and is capable of representing actual performance of the system with high reliability. The investigated system is a novel super-performance Dew Point Cooler (DPC) with a guideless and corrugated Heat and Mass Exchanger (HMX). The DPC is modelled as part of the whole building energy model through detailed description of system and building characteristics at source code level. The developed model has been simulated in all different climates that an Indirect Evaporative Cooling (IEC) system can be operated, namely: subtropical hot desert, humid continental, Mediterranean, and hot desert climates. The performance predictions has been tested against experiments and numerical model of the same system, and a detailed investigation of modelling approaches to efficiently and effectively model aforementioned systems has been provided.The calibrated and empirically validated whole building energy model predicted the key performance parameters of the dew point evaporative cooling system with mean error values limited to 4.1%. The highest COP values recorded by experiments and whole building energy simulations were 51.1 and 49, respectively. The whole building energy model proved to better predict the performance of dew point evaporative cooler, when compared to numerical models, by incorporating the building-side parameters into the model. This modelling work paves the way toward detailed investigation of the advanced cooling systems within building context to achieve optimised performance of the system in wide range of buildings and operating conditions.
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