Ebaid Mohammed A, Mohamed Tamer A, Safwat Hesham
Department of Mechanical Engineering, The British University in Egypt, 11837, El Sherouk City, Egypt.
Heliyon. 2024 Jul 18;10(15):e34774. doi: 10.1016/j.heliyon.2024.e34774. eCollection 2024 Aug 15.
This study investigates the feasibility of implementing a solar-assisted adsorption chiller in an industrial building at the Oriental Weavers International factory located in 10th of Ramadan City, Cairo, Egypt. The objective is to replace an inefficient split air conditioning system currently used to cool the Jacquard units during carpet manufacturing. The research begins by analyzing the performance of the existing cooling system to establish a baseline. It then explores the potential energy savings achievable by replacing the current system with a solar-assisted adsorption chiller. The existing oversized boiler will serve as an auxiliary heater for the new system. TRNSYS simulation tools are employed to model the building, simulate its thermal performance, and develop a solar-assisted cooling system. A parametric analysis investigates the impact of varying collector area and hot/cold-water storage tank volumes on key energy performance indicators. This analysis aims to determine the optimal component sizes needed for efficient system operation. Results indicate that a collector area of 90 m offers the optimal balance between performance and cost. There are minimal benefits to increasing the collector area beyond 100 m. Larger hot water storage tanks demonstrate reduced outlet temperatures, reaching a maximum solar fraction at a capacity of 4 m³. The impact of cold-water storage tank volume on the system is minimal. The economic assessment reveals a payback period of 7.6 years, an Internal Rate of Return (IRR) of 14.3 %, and a Return on Investment (ROI) of 34.5 % over a 10-year period, indicating the financial viability of the proposed system. Furthermore, the solar-assisted adsorption chiller system has the potential for substantial environmental benefits. The system has the capacity to reduce CO2 emissions by up to 7200 metric tons. This highlights not only the technical feasibility of the system but also its economic and environmental advantages.
本研究调查了在埃及开罗斋月十日城东方织机国际工厂的一座工业建筑中安装太阳能辅助吸附式制冷机的可行性。目标是替换目前在地毯制造过程中用于冷却提花机的低效分体式空调系统。研究首先分析现有制冷系统的性能以建立基准。然后探讨用太阳能辅助吸附式制冷机替换现有系统可实现的潜在节能效果。现有的大型锅炉将作为新系统的辅助加热器。采用TRNSYS模拟工具对建筑进行建模，模拟其热性能，并开发太阳能辅助制冷系统。参数分析研究了集热器面积和热水/冷水储存罐容积变化对关键能源性能指标的影响。该分析旨在确定高效系统运行所需的最佳组件尺寸。结果表明，90平方米的集热器面积在性能和成本之间提供了最佳平衡。集热器面积超过100平方米时，收益甚微。更大的热水储存罐显示出口温度降低，在容量为4立方米时达到最大太阳能份额。冷水储存罐容积对系统的影响最小。经济评估显示，在10年期间，投资回收期为7.6年，内部收益率（IRR）为14.3%，投资回报率（ROI）为34.5%，表明所提议系统在财务上具有可行性。此外，太阳能辅助吸附式制冷机系统具有显著的环境效益潜力。该系统有能力将二氧化碳排放量减少多达7200公吨。这不仅突出了该系统的技术可行性，还彰显了其经济和环境优势。
