Numerical analysis-based performance prediction in a direct evaporative cooler used for building cooling

IF 2.2 4区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Building Performance Simulation Pub Date : 2022-02-07 DOI:10.1080/19401493.2021.2025266

Sampath Suranjan Salins, Shiva Kumar, Ritu Kiran Kartik, S. Reddy

引用次数: 0

Abstract

In the present performance parameters is determined for the varied operating conditions using mathematical modelling. Outlet humidity ratio, Dry bulb temperature (DBT), cooling efficiency and cooling effect have been predicted by varying the air velocities, inlet DBT, inlet relative humidity (RH) and pad thickness for three different wettability of Celdek packing. Predicted results revealed that cooling effect, saturation efficiency, ΔDBT and humidity ratio are found to be increasing with the increase in pad thickness and wettability of the material. An increase in the inlet air flow rate and RH resulted in a decrease in ΔDBT, humidity ratio and cooling efficiency. The maximum performance of ΔDBT, ΔRH, saturation efficiency and cooling effects have been observed for Celdek 7090 and are equal to 6°C, 55%, 90% and 7000 Watts for the thickness of 0.3 m, wettability of 630 m2/m3. Wettability of 630 m2/m3 & thickness 0.3 m gave maximum performance.

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基于数值分析的建筑直接蒸发冷却器性能预测

目前的性能参数是根据不同的操作条件用数学模型确定的。通过改变空气流速、进口相对湿度、进口相对湿度和填料厚度，对三种不同润湿性的Celdek填料的出口湿度比、干球温度、冷却效率和冷却效果进行了预测。预测结果表明，随着垫层厚度和材料润湿性的增加，冷却效果、饱和效率、ΔDBT和湿度比均有所增加。进气流量和相对湿度的增加导致ΔDBT、湿度比和冷却效率的降低。Celdek 7090的最大性能ΔDBT， ΔRH，饱和效率和冷却效果已经观察到，等于6°C, 55%， 90%和7000瓦，厚度为0.3 m，润湿性为630 m2/m3。润湿性为630 m2/m3，厚度为0.3 m，具有最佳性能。

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

Journal of Building Performance Simulation CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

5.50

自引率

12.00%

发文量

审稿时长

12 months

期刊介绍： The Journal of Building Performance Simulation (JBPS) aims to make a substantial and lasting contribution to the international building community by supporting our authors and the high-quality, original research they submit. The journal also offers a forum for original review papers and researched case studies We welcome building performance simulation contributions that explore the following topics related to buildings and communities: -Theoretical aspects related to modelling and simulating the physical processes (thermal, air flow, moisture, lighting, acoustics). -Theoretical aspects related to modelling and simulating conventional and innovative energy conversion, storage, distribution, and control systems. -Theoretical aspects related to occupants, weather data, and other boundary conditions. -Methods and algorithms for optimizing the performance of buildings and communities and the systems which service them, including interaction with the electrical grid. -Uncertainty, sensitivity analysis, and calibration. -Methods and algorithms for validating models and for verifying solution methods and tools. -Development and validation of controls-oriented models that are appropriate for model predictive control and/or automated fault detection and diagnostics. -Techniques for educating and training tool users. -Software development techniques and interoperability issues with direct applicability to building performance simulation. -Case studies involving the application of building performance simulation for any stage of the design, construction, commissioning, operation, or management of buildings and the systems which service them are welcomed if they include validation or aspects that make a novel contribution to the knowledge base.