太阳能供热系统的现状和进一步改进的途径及其在乌兹别克斯坦明显大陆性气候中的实施

IF 1.204 Q3 Energy
Yu. K. Rashidov
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引用次数: 0

摘要

对在乌兹别克斯坦建造的太阳能加热系统的技术解决方案水平进行了分析。有人指出,必须对共和国内配备这种系统的设施进行统计监测。在乌兹别克斯坦的气候条件下引进太阳能发电厂需要解决与保护太阳能集热器免遭冬季冷却剂冻结和夏季沸腾有关的问题,清除玻璃表面的灰尘,并确保有效的热量积累。然而,在大多数情况下,用于解决这些问题的技术解决方案不符合共和国目前有效的太阳能发电厂建筑规范和条例的基本效率和可靠性要求。分析还考虑了旨在提高太阳能集热器在实际操作条件下效率的最新科学成果。有人指出,在建造和安装太阳能加热系统的过程中,在大多数情况下,没有制定适合每个设施具体特点的单独设计解决办法;取而代之的是安装工厂生产的现成模块。这导致储热系统的成本更高,并且由于使用了许多小型单独的储罐,这些储罐与环境的热交换面积很大,从而导致了大量的热损失。研究表明,与具有最小表面积的紧凑型蓄能器相比,具有五段蓄能器的太阳能热水器,对环境的热损失和制造的材料消耗增加了2至2.63倍。建议对于自然循环运行的太阳能集热器,对于带有卧式圆柱形集热器的太阳能热水系统,应考虑最大允许配置为五段式集热器,其中其尺寸比L/D >;1.5.
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Current State and Ways of Further Improvement of Solar Heat Supply Systems and Their Implementation in the Sharply Continental Climate of Uzbekistan

Current State and Ways of Further Improvement of Solar Heat Supply Systems and Their Implementation in the Sharply Continental Climate of Uzbekistan

An analysis of the level of technical solutions for solar heating systems constructed in Uzbekistan was carried out. The importance of organizing statistical monitoring of facilities equipped with such systems in the republic was noted. The introduction of solar power plants in the climatic conditions of Uzbekistan requires solving problems related to protecting solar collectors from freezing of the coolant in winter and boiling in summer, removing dust from glass surfaces, and ensuring effective heat accumulation. However, the technical solutions used to solve these problems in most cases do not meet the basic efficiency and reliability requirements of the building codes and regulations for solar power plants currently in force in the republic. The analysis also took into account the latest scientific achievements aimed at improving the efficiency of solar collectors under real operating conditions. It was noted that during the construction and installation of solar heating systems, in most cases, individual design solutions tailored to each facility’s specific features are not developed; instead, ready-made factory-produced modules are installed. This leads to higher costs for heat storage systems and significant heat losses due to the use of numerous small individual storage tanks, which collectively have a large surface area of heat exchange with the environment. It has been shown that for solar water heaters with a five-section accumulator, heat losses to the environment and material consumption for manufacturing increase by 2 to 2.63 times compared to a compact accumulator with minimal surface area. It is recommended that for solar collectors operating with natural circulation, a five-section accumulator should be considered the maximum permissible configuration for solar water heating systems with horizontal cylindrical accumulators, where the ratio of their dimensions L/D > 1.5.

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来源期刊
Applied Solar Energy
Applied Solar Energy Energy-Renewable Energy, Sustainability and the Environment
CiteScore
2.50
自引率
0.00%
发文量
0
期刊介绍: Applied Solar Energy  is an international peer reviewed journal covers various topics of research and development studies on solar energy conversion and use: photovoltaics, thermophotovoltaics, water heaters, passive solar heating systems, drying of agricultural production, water desalination, solar radiation condensers, operation of Big Solar Oven, combined use of solar energy and traditional energy sources, new semiconductors for solar cells and thermophotovoltaic system photocells, engines for autonomous solar stations.
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