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مقالات فارسیISIکنفرانسهاژورنالها

Improving the Energy Performance of an Evacuated Tube Solar Collector Water Heater Using Compound Parabolic Concentrator: an Experimental Study

محل انتشار: مجله انرژی تجدیدپذیر و محیط زیست، دوره: 11، شماره: 2
سال انتشار: 1403
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 23

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لینک ثابت به این مقاله:
https://civilica.com/doc/1965882

شناسه ملی سند علمی:

JR_JREE-11-2_006

تاریخ نمایه سازی: 9 اردیبهشت 1403

چکیده مقاله:

Evacuated tube solar collectors (ETSC) are widely utilized in both domestic and industrial solar water heaters (SWH) due to their commendable thermal performance and straightforward installation. However, a significant challenge associated with ETSC lies in the fact that half of the collector remains unexposed to sunlight. To overcome this limitation, parabolic reflectors can be employed as a viable solution. The primary objective of this study is to assess the performance of a compound parabolic concentrator (CPC) in conjunction with ETSC, taking into account a specific ratio between the areas of the CPC and ETSC. To achieve the desired configuration, the CPC was meticulously designed, fabricated, installed, and subsequently tested. Moreover, the energy performance of the absorber tube was scrutinized both with and without the integration of a parabolic trough collector. The experiments and data collection were conducted on two selected days for both the conventional ETSC device and the system incorporating the CPC. Meteorological data and operational conditions were measured and digitally stored for subsequent analysis. A noteworthy outcome of the study is the revelation that the energy efficiency of the system with a concentrator exhibited a notable improvement of ۲.۸% compared to the conventional system. Offline results further indicated that the performance of a single absorber tube with a concentrator increased by approximately ۲.۷ times when compared to the standard system. This suggests that the energy performance of the solar water heater, with a capacity of about ۲۰۰ liters and featuring ۷ absorber tubes with a concentrator, is comparable to that of the conventional system equipped with ۱۸ absorber tubes.

کلیدواژه ها:

Vacuum tube solar water heater ، Evacuated tube solar collector ، Central parabolic concentrator ، Energy Performance ، Experimental Investigation

نویسندگان

Mahdi Pourbafrani

Department of Energy, Materials and Energy Research Center, Karaj, Iran.

Hossein Ghadamian

Department of Energy, Materials and Energy Research Center, Karaj, Iran.

Mohammad Aminy

Department of Energy, Materials and Energy Research Center, Karaj, Iran.

Meisam Moghadasi

Department of Energy, Materials and Energy Research Center, Karaj, Iran

Masoud Mardani

Department of Energy, Materials and Energy Research Center, Karaj, Iran

Mohammad Akrami

Department of Engineering, University of Exeter, Exeter, UK.

Amir houshang Khaki

Department of Research & Development, Chamberlains Aqua Systems Limited, Southampton, UK.

Seyed Mohammad Kazem Sadr

Department of Engineering, University of Exeter, Exeter, UK.

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