随机模型区间参数下地源热泵可靠性评价

2011 Second International Conference on Mechanic Automation and Control Engineering Pub Date : 2011-07-15 DOI:10.1109/MACE.2011.5987472

Yanping Tu, Changsheng Guan, D. Zhang, Qikun Zhu

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引用次数: 1

摘要

根据地源热泵可靠性设计方法，在对地源热泵井内热阻、井外岩土热阻进行随机分析的基础上，建立了地源热泵随机变参数随区间变化的可靠性评价模型。实际工程表明，随机变量参数的小偏差对评价结果影响很大。以偏差5%为例，计算结果表明，最大失效概率是最小失效概率的521375倍。因此，充填材料热力特性和井外岩土热力特性测试技术的进步对地源热泵的可靠性有着无限的影响。

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Reliability evaluation of ground source heat pump in interval parameters of stochastic model

The paper establishes reliability evaluation model of random variable parameters with interval changes of ground source heat pump (GSHP) according reliability design method to GSHP based on stochastic analysis of thermal resistance inside borehole, the geotechnical thermal resistance outside borehole of the GSHP. Practical projects show that small deviation of radom variable parameters leads great influence on evaluation results. To take 5% deviation as an example,calculation results show that the max failure probability is 521375 times of the min failure probability. Therfore the advance of backfilled material thermodynamic properties and geotechnical thermodynamic properties outside borehole testing technology have infinite influence on GSHP reliability.

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2011 Second International Conference on Mechanic Automation and Control Engineering

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