[目的]为探究压缩空气储能系统(compressed air energy storage system,CAES)在冷热电场景下的工程应用,提出了一种用于木材干燥的CAES.[方法]首先搭建了 CAES及其数学模型;其次分析了木材高温干燥和除湿干燥模式的能耗,通过模拟试验探究了 CAES的冷热电联产特性;最后将系统产出的冷热电能与两种干燥模式的能耗负荷匹配,并进行经济性分析.[结果]储能系统采用补能预热,水流量为1 kg/s时产生最大制冷量和级间热量;当换热冷却水流量为3.3 kg/s时,木材干燥综合能效最高;高温干燥方案投资静态回收期稍微低于除湿干燥方案.[结论]本研究结果为木材干燥企业的能源转型提供参考,同时为压缩空气储能系统的工程应用开辟了新方向.
On compressed air energy storage for synergistic drying of multiple energy supplies
[Objective]The aim of this study was to explore the engineering application of compressed air energy storage system(CAES)in cold,hot,and electric scenarios and propose a CAES for wood drying.[Method]First,the CAES and its mathematical model were constructed;second,the energy consumption of wood was analyzed in high-temperature drying and dehumidification drying modes,exploring the characteristics of combined cooling,heating,and electricity in CAES through simulation;finally,the cooling,heating,and electricity output of CAES was matched with the energy consumption loads of the two drying modes,conducting analysis of economic benefit.[Result]The results indicate that the CAES generates maximum cooling capacity and inter-stage heat when the supplementary pre-heating water flow rate being 1 kg/s;the wood drying comprehensive energy efficiency peaks when the heat transfer cooling water flow rate being 3.3 kg/s;the high-temperature drying scheme has a slightly lower investment static payback period than the dehumidification drying scheme.[Conclusion]This study provides references for the energy transformation of timber drying enterprises and opens up a new direction for the engineering application of compressed air energy storage system.
compressed air energy storagecharacteristics of combined cooling,heating and electricitycomprehensive energy efficiencywood dryingeconomic benefit
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