太阳能热泵复合热水系统设计与控制研究

发布时间：2018-05-23 12:33

本文选题：太阳能热泵复合热水系统 + 制热效率　；参考：《杭州电子科技大学》2017年硕士论文

【摘要】：随着化石能源枯竭和环境污染问题的加剧,太阳能作为一种无污染可再生的能源逐渐得到了社会的重视。太阳能热水系统能够利用太阳能将水加热,但太阳能的不稳定性对系统的制热效率有较大的影响。热泵的制热效率相对较高而且对使用环境的要求较低,但需要消耗部分电能。太阳能热泵复合热水系统将太阳能制热和热泵制热结合在一起,优势互补,特别是在光照不足的环境下。如何通过对两者有效的控制实现复合系统制热性能稳定、系统电耗最低是本文的研究重点。提出了太阳能热泵复合系统的设计思路和流程,并结合实际项目经验阐述了一些常见问题的解决方法。在此基础上,进行了系统控制器的设计和控制策略的研究。通过对控制器的模块化设计,提高了系统控制器稳定性和扩展性,对控制器的控制方式做了详细的分析。以双水箱太阳能热泵复合系统为例,给出了系统控制策略的设计步骤,该系统控制策略可以根据用户的需求和实际的运行状况给出空气源热泵的开启时间和运行的时长,实现对空气源热泵的控制。搭建了双水箱太阳能热泵复合热水系统对控制器进行了功能测试和系统控制策略的临界条件测试。结果表明:系统节能控制策略能够在保证用户需求的基础上,有效地提高系统对太阳能的利用,减少空气源热泵的运行时间,节能效果明显。
[Abstract]:With the depletion of fossil energy and the aggravation of environmental pollution, solar energy, as a kind of non-polluting renewable energy, has been paid more and more attention by the society. Solar heating system can use solar energy to heat water, but the instability of solar energy has great influence on the heating efficiency of the system. The heating efficiency of heat pump is relatively high and the requirement of environment is low, but it needs to consume part of electric energy. Solar heat pump complex hot water system combines solar heating and heat pump heating, and its advantages complement each other, especially in the environment with insufficient light. The emphasis of this paper is how to realize the stability of the heating performance of the composite system through effective control of the two systems and the lowest power consumption of the system. The design idea and flow chart of solar energy heat pump compound system are put forward, and some common problems solving methods are expounded based on actual project experience. On this basis, the design of system controller and the study of control strategy are carried out. Through the modularization design of the controller, the stability and expansibility of the system controller are improved, and the control mode of the controller is analyzed in detail. Taking the dual-tank solar heat pump compound system as an example, the design steps of the system control strategy are given. The system control strategy can give the opening time and the running time of the air-source heat pump according to the user's demand and the actual operation condition. The control of air source heat pump is realized. The function of the controller and the critical condition of the control strategy of the controller are tested by building a double tank solar heat pump composite hot water system. The results show that the energy-saving control strategy can effectively improve the utilization of solar energy and reduce the operating time of air-source heat pump.
【学位授予单位】：杭州电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273;TK515

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