空气源热泵直接地板辐射供暖系统运行方式及经济性研究

发布时间：2018-06-27 05:30

本文选题：空气源热泵直接地板辐射供暖 + TRNSYS　；参考：《太原理工大学》2015年硕士论文

【摘要】：空气源热泵直接地板辐射供暖系统是一种新型供暖方式，它将节能环保的空气源热泵技术与制冷剂直接地板辐射供暖技术相结合，有效提高供热效率，并且因其良好的经济性和舒适性，可使此系统广泛应用于城镇和农村居民住宅建筑。除此之外，本系统可根据用户的作息等条件灵活设定房间温度和系统启停时间，进一步提升了系统的节能效果。本文通过TRNSYS软件对某建筑的空气源热泵直接地板辐射供暖系统进行了模型的建立，将模拟所得数据与实地测量数据进行比较，验证模型达到了很好的仿真效果。在此基础上，本文提出了全天连续运行、白天运行夜间停机、谷价运行峰价停机三种不同的运行方式，利用系统模型对这三种运行方式进行模拟，比较这三种运行方式在舒适性和经济性等方面的优劣，为空气源热泵直接地板辐射供暖系统的推广和应用起到一定的指导意义。本文的研究内容及结论如下： 1、建立了空气源热泵直接地板辐射供暖系统主要部件的数学模型和建筑热负荷数学模型，为系统模型的建立提供了理论支撑。 2、通过对某安装了空气源热泵直接地板辐射供暖系统的建筑进行实地测定，证明此系统以白天运行夜间停机的运行方式供暖可基本达到室内温度白天20℃,夜间16℃，并通过比较实测与模拟的动态室内平均温度和室内动态热负荷等参数，分析得出模拟数据与实际工况吻合，证明了模型可代替实际系统工况，达到了仿真模拟的效果。 3、使用系统模型模拟了三种运行方式下采暖季的室内动态温度、动态热舒适度、逐日系统平均性能系数和逐日系统耗电量，综合比较分析得出，在基本满足舒适性条件下，白天运行夜间停机运行方式节能性优于全天连续运行方式和谷价运行峰价停机运行方式；当电价采用统一电价或阶梯电价时，白天运行夜间停机运行方式的经济性较好,当电价采用峰谷电价时，谷价运行峰价停机运行方式经济性较好，但其节能性较差。综合节能性和经济性，白天运行夜间停机运行方式最佳。 4、使用费用年值法对空气源热泵直接地板辐射供暖的经济性进行了详细的计算和分析，并与几种常见供暖方式在初投资费用、运行费用和费用年值等分项分别比较，从数据中可以看出，空气源热泵直接地板辐射供暖系统的经济性方面在几种常见供暖方式中处于中间位置；从一次能源的消耗量方面计算分析了这几种供暖方式的节能性，由计算结果可知，空气源热泵直接地板辐射供暖系统的节能性最佳。综合考虑经济效益、环保效益、社会效益和节能效益，，空气源热泵直接地板辐射供暖系统是较好的供暖方式。
[Abstract]:The air source heat pump direct floor radiant heating system is a new type of heating system. It combines the energy saving and environmental air source heat pump technology with the refrigerant direct floor radiant heating technology. It can effectively improve the heating efficiency. And because of its good economy and comfort, this system can be widely used in urban and rural residential buildings. In addition, this system can flexibly set room temperature and start and stop time according to the conditions of user's rest and rest, and further enhance the efficiency of the system. This paper has built a model of the air source heat pump direct floor radiant heating system of a building by TRNSYS software, and the simulated data and the field measurement data are carried out. Comparison, the verification model has achieved good simulation results. On this basis, this paper puts forward three different operating modes, which are running in a continuous day, running at night in the daytime, running peak price of valley price, and using the system model to simulate the three modes of operation, and compare the advantages of the three operation modes in the aspects of comfort and economy. Poor quality will play a guiding role in the promotion and application of air source heat pump direct floor radiant heating system. The research contents and conclusions in this paper are as follows:
1, the mathematical model of the main components of the air source heat pump direct floor radiant heating system and the mathematical model of the heat load of the building are established, which provide the theoretical support for the establishment of the system model.
2, through the field measurement of the building of a direct floor radiant heating system with an air source heat pump, it is proved that the system can basically reach the indoor temperature of 20 and 16 at night by daytime running at night, and by comparing the measured and simulated indoor average temperature and indoor dynamic heat load. It is proved that the model can replace the actual system condition and achieve the effect of simulation.
3, the system model is used to simulate the indoor dynamic temperature, the dynamic thermal comfort, the daily average performance coefficient and the daily system consumption of the daily system in the heating season under the three operating modes. The comprehensive comparison and analysis shows that under the basic comfort conditions, the energy saving of the daytime operation at night is better than the whole day continuous operation mode and the valley price. When the electricity price adopts the unified electricity price or the ladder electricity price, the economy of running at night in the night is better. When the electricity price adopts peak valley electricity price, the operation mode of the valley price peak price stop operation is better, but its energy saving is poor. The way is best.
4, the cost annual value method is used to calculate and analyze the economy of air source heat pump directly floor radiant heating. It is compared with several common heating methods in initial investment, operation cost and annual cost. It can be seen from the data that the economic aspects of air source heat pump direct floor radiant heating system can be seen from the data. It is in the middle position of several common heating methods; the energy saving of these heating modes is calculated and analyzed from the consumption of the primary energy. The results show that the energy saving of the air source heat pump direct floor radiant heating system is the best. The comprehensive consideration of the economic benefit, the benefit of the ring, the social and energy efficiency, the air source heat The pump direct floor radiant heating system is a better way of heating.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU832.1

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