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首页> 外文会议>The 2002 International Solar Energy Conference, Jun 15-20, 2002, Reno, Nevada >IDENTIFYING AND REDUCING SCALING PROBLEMS IN SOLAR HOT WATER SYSTEMS
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IDENTIFYING AND REDUCING SCALING PROBLEMS IN SOLAR HOT WATER SYSTEMS

机译：太阳能热水系统中尺度问题的识别和减少

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摘要

In areas with hard water, scaling can reduce the reliability of solar hot water (SHW) systems. Common reliability problems associated with scaling are both mechanical (collector freeze damage, clogged passages, premature failure of pumps and valves) and thermal (efficiency degradation). A mechanistic and a mathematical scaling rate model are presented. Results from controlled experiments investigating the effect of key water chemistry and heat transfer parameters on the scaling rate are summarized. The implications of these results for designing SHW systems for scaling environments are discussed. Most importantly, indirect systems where the potable water side of the heat exchanger is integrated into the storage tank wall, such as in a wrap-around heat exchanger, are shown to be the most mechanically and thermally reliable systems for scaling environments. A new version of the software SolScale is discussed, which is intended to aid in the design of SHW systems to reduce scaling related reliability problems.
机译：在有硬水的区域，结垢会降低太阳能热水（SHW）系统的可靠性。与结垢有关的常见可靠性问题既有机械性（集热器冻结损坏，通道堵塞，泵和阀门过早损坏）又有热性（效率下降）。提出了一个机械的和数学的比例缩放模型。总结了控制实验的结果，该实验研究了关键水化学和传热参数对结垢率的影响。讨论了这些结果对于设计可扩展环境的SHW系统的意义。最重要的是，在结垢环境中，将热交换器的饮用水侧集成到储罐壁中的间接系统（例如在环绕式热交换器中）是最可靠的机械和热系统。讨论了软件SolScale的新版本，该软件旨在帮助SHW系统的设计以减少与缩放有关的可靠性问题。

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