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Energetic and exergetic performances of an economical and available integrated solar storage collector based on concrete matrix

机译：基于混凝土基体的经济，可用的集成式太阳能存储集热器的动能性能

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摘要

This paper deals with an experimental study of an inexpensive integrated solar storage collector (ISSC) of total aperture area of 2 m~2, used for the providing of domestic hot water. The ISSC is characterised by an absorber matrix made up of a thin cement concrete slab which performs the function of both absorbing and storing of the solar thermal energy. Inside the concrete absorber was embedded a cooper pipe network. Outdoor experiments were carried out under varied environmental conditions for several days during three consecutive months (from November 2007 to February 2008). The experiments were carried out by measuring the climatic variables, temperatures in different parts of the collectors, and mass flow rates of water, during the test days. Based on these measurements, the behavior of the systems was analyzed by comparing exit temperatures, heat losses, and delivered useful energy. A detailed energy and exergy analysis was carried out for evaluating the thermal and optical performance, exergy losses as well as exergetic efficiency for ISSC under given operating conditions. Results shows that the integrated solar storage collector, having energetic and exergetic efficiencies of 32% and 23.5% respectively, provides acceptable stored thermal heat rate by supplying approximately 80% in domestic hot water requirements for a family composed of 5-6 persons. An economic evaluation was made considering the investment time recovery through the system. The results obtained from the ISSC system were compared with the results obtained from a high quality thermosyphon solar system composed of a flat-plate collector (with a total aperture area of 2 m~2) and its corresponding insulated storage tank (2001), tested at the same time.
机译：本文研究了一种总开口面积为2 m〜2的廉价集成太阳能存储集热器（ISSC）的实验研究，该集热器用于提供生活热水。 ISSC的特征是由薄水泥混凝土板构成的吸收体矩阵，它既具有吸收和储存太阳能的功能。在混凝土吸收器内嵌有一个库珀管网。在连续三个月（从2007年11月到2008年2月）中，在各种环境条件下进行了几天的户外实验。在测试期间，通过测量气候变量，收集器不同部分的温度以及水的质量流量来进行实验。基于这些测量，通过比较出口温度，热损失和传递的有用能量来分析系统的性能。在给定的操作条件下，进行了详细的能量和火用分析，以评估ISSC的热性能和光学性能，火用损失以及能效。结果表明，集成的太阳能存储集热器分别具有32％和23.5％的能量效率，通过为5-6人组成的家庭提供约80％的生活热水需求，可以提供可接受的存储热率。考虑通过该系统收回投资时间，进行了经济评估。将ISSC系统获得的结果与由平板集热器（总孔径面积为2 m〜2）及其相应的绝缘储罐（2001）组成的高质量热虹吸太阳能系统的结果进行了比较，进行了测试与此同时。

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  • 来源
    《Energy Conversion & Management》 |2010年第6期|p.1210-1218|共9页
  • 作者

    Majdi Hazami; Sami Kooli; Meriem Lazaar; Abdelhamid Farhat; Ali Belghith;

  • 作者单位

    Laboratoire de Maitrise des Technologies de l'Energie, Centre de Recherche des Technologies de l'Energie, Hammam Lif, B.P. 95, 2050 Tunis, Tunisia;

    Laboratoire de Maitrise des Technologies de l'Energie, Centre de Recherche des Technologies de l'Energie, Hammam Lif, B.P. 95, 2050 Tunis, Tunisia;

    Laboratoire de Maitrise des Technologies de l'Energie, Centre de Recherche des Technologies de l'Energie, Hammam Lif, B.P. 95, 2050 Tunis, Tunisia;

    Laboratoire de Maitrise des Technologies de l'Energie, Centre de Recherche des Technologies de l'Energie, Hammam Lif, B.P. 95, 2050 Tunis, Tunisia;

    Faculte des Sciences de Tunis, Campus, 1060 le belvedere, Tunis, Tunisia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    integrated solar storage collector; concrete absorber; energy and exergy studies;

    机译：集成式太阳能存储集热器;混凝土吸收剂能量和火用研究;

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