Share

Online optimal control of variable refrigerant flow and variable air volume combined air conditioning system for energy saving.

Author(s) : ZHU Y., JIN X., DU Z., et al.

Type of article: Article

Summary

The variable refrigerant flow (VRF) and variable air volume (VAV) combined air conditioning system can solve the problem of the VRF system in outdoor air ventilation while taking advantage of its high part load energy efficiency. Energy performance of the combined air conditioning system can also be optimized by joint control of both the VRF and the VAV parts. A model-based online optimal control strategy for the combined air conditioning system is presented. Simplified adaptive models of major components of the combined air conditioning system are firstly developed for predicting system performances. And a cost function in terms of energy consumption and thermal comfort is constructed. Genetic algorithm is used to search for the optimal control sets. The optimal control strategy is tested and evaluated through two case studies based on the simulation platform. Results show that the optimal strategy can effectively reduce energy consumption of the combined air conditioning system while maintaining acceptable thermal comfort.

Details

  • Original title: Online optimal control of variable refrigerant flow and variable air volume combined air conditioning system for energy saving.
  • Record ID : 30015755
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 80
  • Publication date: 2015/04/05
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2015.01.030

Links


See other articles in this issue (6)
See the source

Indexing