Journal of Applied Mechanical Engineering

Zoi Sagia

Publications

• Research Article
  New Control Strategy for a Hybrid Ground Source Heat Pump System coupled to a Closed Circuit Cooling Tower
  Author(s): Zoi Sagia and Constantinos Rakopoulos Zoi Sagia and Constantinos Rakopoulos
  
  Hybrid Ground Source Heat Pump Systems (HGSHPSs) which include cooling towers are widely used so as to improve Ground Source Heat Pump Systems (GSHPSs) efficiency in cooling dominated applications. A Greek office building with total cooled area 1000 m2 is examined. The whole system is modelled using TRNSYS 17. System’s operation is optimized using TRNOPT 17 so as to meet the maximum cooling load during the net cooling period, when no heating loads occur, by minimizing Ground Heat Exchangers (GHEs) depth. Three control strategies, based on continuous observation of critical temperatures, are applied to the optimized system. Each strategy attempts to achieve a further optimization of HGSHPS’s operation by minimizing the electric power consumption. In the first one, the cooling tower is turned on when the difference between the fluid temperat.. View More»
  DOI: 10.4172/2168-9873.1000108

  Abstract PDF