为解决北方地区冬季采暖和空气污染等问题,太阳能与热泵等新型节能减排技术得到了越来越多的关注与应用。鉴于此,提出了串、并联式太阳能空气源热泵供热系统(Heating System of SolarAssisted Air Source Heat Pump,HSSAASHP)设计方案...为解决北方地区冬季采暖和空气污染等问题,太阳能与热泵等新型节能减排技术得到了越来越多的关注与应用。鉴于此,提出了串、并联式太阳能空气源热泵供热系统(Heating System of SolarAssisted Air Source Heat Pump,HSSAASHP)设计方案及其运行模式。以兰州地区某办公楼作为供热对象,基于TRNSYS(Transient System Simulation Program)对其串、并联式HSSAASHP分别进行了组态和运行状况进行了数值模拟及性能分析。结果表明:串、并联式HSSAASHP在理论上都是可行的,且前者在节能方面表现优于后者。此外,基于粒子群算法(Particle Swarm Algorithm,PSA)来优化串联式HSSAASHP的部分关键参数,进一步降低其运行成本,从而获得节能、降耗和减排的综合效益。展开更多
The traditional integer order PID controller manipulates the air-conditioning fan coil unit(FCU)that offers cooliug and heatins loads to each air-conditioning room in summer and winter,respectivelv.In order to maintai...The traditional integer order PID controller manipulates the air-conditioning fan coil unit(FCU)that offers cooliug and heatins loads to each air-conditioning room in summer and winter,respectivelv.In order to maintain a steady indoor temperature in summer and winter,the control quality cannot meet the related requirements of air-conditioning automation,such as large overshoot,large steady state error.long regulating time,etc.In view of these factors,this paper develops a fractional order PID controller to deal with such problem associated with FCU.Then,by varving mutation factor and crossover rate of basic differential evolution algorithmadaptivelv,a modified differential evolution algorithm(MDEA)is designed to tune the satisfactory values of five parameters of indoor temperature fractional order PID controller.This fractional order PID coutrol system is configured and the corresponding mumerical simulation is conducted by means of MATLAB software.The results indicate that the proposed fractional order PID control svstem and MDEA are reliable and the related control performance indexes meet with the related requirements of comfortable air-conditioning design and control criteria.展开更多
文摘为解决北方地区冬季采暖和空气污染等问题,太阳能与热泵等新型节能减排技术得到了越来越多的关注与应用。鉴于此,提出了串、并联式太阳能空气源热泵供热系统(Heating System of SolarAssisted Air Source Heat Pump,HSSAASHP)设计方案及其运行模式。以兰州地区某办公楼作为供热对象,基于TRNSYS(Transient System Simulation Program)对其串、并联式HSSAASHP分别进行了组态和运行状况进行了数值模拟及性能分析。结果表明:串、并联式HSSAASHP在理论上都是可行的,且前者在节能方面表现优于后者。此外,基于粒子群算法(Particle Swarm Algorithm,PSA)来优化串联式HSSAASHP的部分关键参数,进一步降低其运行成本,从而获得节能、降耗和减排的综合效益。
基金the National Natural Science Foundation of China(Nos.61364004 and 51808275)the Chinese Scholars to Study Overseas Sponsored by ChinaScholarship Council Foundation(No.201408625045)+1 种基金the Doctoral Research Funds of Lanzhou University of Technology(No.04-237)the Alumni Foundation Civil Engineering 77,Lanzhou University of Technology(No.TM-QK1301)。
文摘The traditional integer order PID controller manipulates the air-conditioning fan coil unit(FCU)that offers cooliug and heatins loads to each air-conditioning room in summer and winter,respectivelv.In order to maintain a steady indoor temperature in summer and winter,the control quality cannot meet the related requirements of air-conditioning automation,such as large overshoot,large steady state error.long regulating time,etc.In view of these factors,this paper develops a fractional order PID controller to deal with such problem associated with FCU.Then,by varving mutation factor and crossover rate of basic differential evolution algorithmadaptivelv,a modified differential evolution algorithm(MDEA)is designed to tune the satisfactory values of five parameters of indoor temperature fractional order PID controller.This fractional order PID coutrol system is configured and the corresponding mumerical simulation is conducted by means of MATLAB software.The results indicate that the proposed fractional order PID control svstem and MDEA are reliable and the related control performance indexes meet with the related requirements of comfortable air-conditioning design and control criteria.
