Experimental analysis and performance evaluation of a solar PV-driven diffusion absorption refrigeration system

IF 6.4 2区工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2025-02-01 Epub Date: 2025-01-09 DOI:10.1016/j.csite.2025.105754

Mohamed Rady, Mohanad Aljahdli, Abdullah Abuhabaya, Eydhah Almatrafi, Faisal Al Batati, Alaa Attar

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Abstract

This article presents a comprehensive analysis of the design, integration, and performance evaluation of a photovoltaic (PV) solar-driven aqua-ammonia diffusion absorption refrigeration (DAR) system. The present approach emphasizes a thorough indoor experimental phase to inform the design process and selection of the PV solar system for integration with the DAR unit. The experiments cover various start-up conditions, thermal power inputs to the generator, and evaporator loads, with temperatures measured at key points of the DAR unit. Steady-state results across a wide range of operating conditions are used to create performance maps and identify dynamic characteristics, crucial for estimating generator power for specific cooling loads. Outdoor experiments are conducted to evaluate the performance of the PV-driven DAR unit under typical hot climate conditions. The operation time of the DAR unit reaches 94 h and maintains an evaporator temperature between −9.5 °C and 3.5 °C. PV cells achieved an average daily efficiency of 12–13 %, with an overall system COP of approximately 0.055. These results demonstrate the system's capability to maintain effective cooling under varying solar conditions, making it suitable for remote areas without conventional electricity.

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太阳能光伏驱动扩散吸收式制冷系统的实验分析与性能评价

本文综合分析了光伏（PV）太阳能驱动的水-氨扩散吸收式制冷（DAR）系统的设计、集成和性能评价。目前的方法强调一个彻底的室内实验阶段，以告知设计过程和光伏太阳能系统与DAR单元集成的选择。实验涵盖了各种启动条件、发电机的热功率输入和蒸发器负荷，并测量了DAR单元关键点的温度。在广泛的运行条件下，稳态结果用于创建性能图和识别动态特性，这对于估计特定冷却负荷下的发电机功率至关重要。在典型的高温气候条件下，进行了室外实验，以评估pv驱动DAR单元的性能。DAR机组运行时间94h，蒸发器温度保持在- 9.5℃~ 3.5℃之间。光伏电池的平均日效率为12 - 13%，整个系统的COP约为0.055。这些结果证明了该系统在不同的太阳能条件下保持有效冷却的能力，使其适用于没有传统电力的偏远地区。

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

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.