Constrained optimal high pressure equation of CO 2 transcritical cycle
作者: Liang-Liang ShaoZi-Yang ZhangChun-Lu Zhang
作者单位: 1Institute of Refrigeration and Cryogenics, School of Mechanical Engineering, Tongji University, Shanghai 201804, China
刊名: Applied Thermal Engineering, 2018, Vol.128 , pp.173-178
来源数据库: Elsevier Journal
DOI: 10.1016/j.applthermaleng.2017.09.023
关键词: CO 2Transcritical cycleHigh pressureConstrained optimization
英文摘要: Abstract(#br)CO 2 transcritical cycle has been widely applied in commercial refrigeration and heat pump water heating systems. Its cycle COP (coefficient of performance) heavily depends on the high pressure optimization and control. In theory, the optimal high pressure increases quickly with the increasing gas cooler outlet temperature or ambient temperature. However, due to reliability and cost concerns, there is an upper limit of the high pressure in compressor design and system operation. In this work, we proposed a constrained optimization method for getting constrained optimal high pressure equation of CO 2 transcritical cycle. With the new method, the high pressure and its upper bound were simultaneously optimized at a given level of COP loss. Two specific approaches were developed...
全文获取路径: Elsevier  (合作)
影响因子:2.127 (2012)

  • optimal 最佳的
  • equation 方程
  • pressure 压力
  • cycle 旋回