基于TRNSYS的太陽能耦合土壤源熱泵系統(tǒng)仿真研究
發(fā)布時間：2018-08-25 13:38
【摘要】：隨著世界經(jīng)濟快速發(fā)展,能源緊缺和環(huán)境惡化已成為全球性問題,各領(lǐng)域越來越重視對可再生能源的開發(fā)利用。一些熱泵系統(tǒng),如太陽能熱泵、地源熱泵、空氣源熱泵已經(jīng)得到一些應(yīng)用,但在應(yīng)用過程中因自身的一些局限性使其發(fā)展受到一定的限制。如果能結(jié)合兩種能源的優(yōu)勢使得他們可以彌補各自的缺陷,勢必會擴大其應(yīng)用范圍。太陽能耦合土壤源熱泵系統(tǒng)就是一種既能利用土壤源來克服太陽能的間歇性,又可利用太陽能起到緩解土壤溫度的恢復(fù)壓力,具有廣闊的發(fā)展前景。 本文針對太陽能耦合土壤源熱泵系統(tǒng)進行研究,并對系統(tǒng)中的各個部件建立數(shù)學模型,通過TRNSYS軟件建立仿真模型,收集實際案例中系統(tǒng)在夏季及過渡季節(jié)和冬季的運行數(shù)據(jù),與模擬所得數(shù)據(jù)進行分析對比,驗證仿真模型的正確性。 在仿真模型的基礎(chǔ)上,改變實際案例中太陽能耦合土壤源熱泵系統(tǒng)的運行模式進行瞬態(tài)數(shù)值模擬,對比分析了不同運行模式下系統(tǒng)的運行特性。通過分析可知：在夏季及過渡季中整個系統(tǒng)只在白天運行,太陽能系統(tǒng)采用動態(tài)運行模式；在冬季在氣溫較低的月份中(12月份、1月份和2月份)太陽能系統(tǒng)采用動態(tài)運行模式,而其余的采暖期間采用靜態(tài)運行模式,對于靜態(tài)運行模式中時間段的選擇應(yīng)是盡早將熱量補充到系統(tǒng)中較合理。 在仿真模型的基礎(chǔ)上,改變實際案例中太陽能耦合土壤源熱泵系統(tǒng)的連接方式,對比分析了不同連接方式的系統(tǒng)全年運行特性。通過分析可知：對于太陽能補熱點的位置設(shè)置在熱泵機組的出口和地埋管入口之間和太陽能補熱點位置設(shè)置在地埋管的出口和熱泵機組的入口之間兩種連接方式,前者系統(tǒng)的性能要優(yōu)于后者。 本文在太陽能耦合土壤源熱泵系統(tǒng)實地調(diào)研的基礎(chǔ)上,結(jié)合仿真模型對其運行模式和連接方式進行了分析研究,為今后太陽能耦合土壤源熱泵系統(tǒng)在設(shè)計與應(yīng)用提供理論參考。
[Abstract]:With the rapid development of world economy, energy shortage and environmental deterioration have become a global problem, and more attention has been paid to the development and utilization of renewable energy in various fields. Some heat pump systems, such as solar heat pump, ground-source heat pump and air-source heat pump, have been applied, but their development is limited due to their limitations. If the combination of the advantages of the two sources of energy so that they can make up for their shortcomings, it will expand its scope of application. The solar-coupled ground-source heat pump system is a kind of ground-source heat pump system, which can not only use soil source to overcome the intermittence of solar energy, but also use solar energy to relieve the recovery pressure of soil temperature. In this paper, the solar-energy coupled ground-source heat pump system is studied, and the mathematical model of each component of the system is established. The simulation model is established by TRNSYS software, and the operation data of the system in summer, transitional season and winter are collected in practical cases. Compared with the simulated data, the correctness of the simulation model is verified. On the basis of the simulation model, the transient numerical simulation of the solar-coupled ground-source heat pump system is carried out by changing the operating mode of the actual case, and the operating characteristics of the system under different operating modes are compared and analyzed. Through the analysis, we can know that the whole system only operates in the daytime in summer and transition season, and the solar system adopts dynamic operation mode in winter in the months with low temperature (January and February in December). The rest of the heating period uses static operation mode, for the static mode of the selection of time should be as early as possible to add heat to the system more reasonable. Based on the simulation model, this paper changes the connection mode of solar coupled ground source heat pump system in practical cases, and compares and analyzes the year-round operation characteristics of the system with different connection modes. Through the analysis, we can know that the position of solar compensation hot spot is set between the outlet of heat pump unit and the entrance of underground pipe, and the position of hot spot of solar energy compensation is set between the outlet of underground tube and the entrance of heat pump unit. The performance of the former system is better than that of the latter. On the basis of the field investigation of the solar-coupled ground-source heat pump system and the simulation model, this paper analyzes and studies its operation mode and connection mode, which provides a theoretical reference for the design and application of the solar-energy coupled ground-source heat pump system in the future.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU83
本文編號：2203037
[Abstract]:With the rapid development of world economy, energy shortage and environmental deterioration have become a global problem, and more attention has been paid to the development and utilization of renewable energy in various fields. Some heat pump systems, such as solar heat pump, ground-source heat pump and air-source heat pump, have been applied, but their development is limited due to their limitations. If the combination of the advantages of the two sources of energy so that they can make up for their shortcomings, it will expand its scope of application. The solar-coupled ground-source heat pump system is a kind of ground-source heat pump system, which can not only use soil source to overcome the intermittence of solar energy, but also use solar energy to relieve the recovery pressure of soil temperature. In this paper, the solar-energy coupled ground-source heat pump system is studied, and the mathematical model of each component of the system is established. The simulation model is established by TRNSYS software, and the operation data of the system in summer, transitional season and winter are collected in practical cases. Compared with the simulated data, the correctness of the simulation model is verified. On the basis of the simulation model, the transient numerical simulation of the solar-coupled ground-source heat pump system is carried out by changing the operating mode of the actual case, and the operating characteristics of the system under different operating modes are compared and analyzed. Through the analysis, we can know that the whole system only operates in the daytime in summer and transition season, and the solar system adopts dynamic operation mode in winter in the months with low temperature (January and February in December). The rest of the heating period uses static operation mode, for the static mode of the selection of time should be as early as possible to add heat to the system more reasonable. Based on the simulation model, this paper changes the connection mode of solar coupled ground source heat pump system in practical cases, and compares and analyzes the year-round operation characteristics of the system with different connection modes. Through the analysis, we can know that the position of solar compensation hot spot is set between the outlet of heat pump unit and the entrance of underground pipe, and the position of hot spot of solar energy compensation is set between the outlet of underground tube and the entrance of heat pump unit. The performance of the former system is better than that of the latter. On the basis of the field investigation of the solar-coupled ground-source heat pump system and the simulation model, this paper analyzes and studies its operation mode and connection mode, which provides a theoretical reference for the design and application of the solar-energy coupled ground-source heat pump system in the future.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TU83
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