【摘要】 针对道路集热蓄能融雪化冰过程进行逐年运行分析,研究能源利用状况。结果表明:冬季大雪量和密集降雪的融雪过程将导致地下温度连续下降,系统功耗增加。通常最大瞬时吸热率发生在融雪过程的开始时段,随着进程吸热率逐渐降低,并存在一定波动。逐年的地能利用将导致地下均衡温度降低,热泵系统COP降低。算例分析表明,5年后地下均衡温度降低8.5%。由此可知,利用太阳能路面集热和季节性地下蓄能将是热融雪化冰技术可持续应用的重要保证。更多还原

【Abstract】 The seasonally running performance of the hydronic ice-snow melting(HISM) on the road by using the ground source heat pump(GSHP) for many seasons was investigated. A innovate numerical simulation module of all HISM systen were established. Results show that the HISM in both heavy and frequent snowfall leads to the further drop of underground temperature and the more power consumption. The maximal instantaneous rate of the heat extracted from the ground appears in begin of every ice-snow melting,and this rate gradually decreases and fluctuates. The seasonal running for many years results in a gradual drop of the ground equilibrium temperature and COP(coefficient of performance) of heat pump system year after year. In the computational example,the COP decreases 8.5% after 5 years. Therefore,the combination of slab solar collection(SSC) and underground thermal energy storage(UTES) ,which actually supplements the thermal energy to the ground and increases the underground temperature,will provide a sustainable development for the HISM.更多还原