Paper Conference

Proceedings of ASim Conference 2014: 2nd Asia conference of IBPSA-China, Japan, Korea


Energy performance of balanced heat recovery systems with different terminal systems

Dae Uk Shin, Tae Ha Leigh, Goo Sang Joe, Min Gi Kim, Myoung Souk Yeo, Kwang Woo Kim

Abstract: This study investigated the influence of terminal system types on a balanced heat recovery (BHR) system in terms of energy. We compared the energy performance of BHR systems with a convective (Case 1) and with a radiant terminal (Case 2) on their total energy demand when removing loads. The total energy demand of heat production (i.e., a heat pump) and distribution (i.e., a pump and a fan) is sum of all demanded energy. Differences in total energy demand were simulated for a space with simultaneous heating and cooling loads. The total energy demand was lower for Case 2 than Case 1. The main reason for this was the higher efficiency of the refrigeration plant for Case 2 from the smaller temperature difference between the condenser and the evaporator. Moreover, the radiant terminal was more suitable for the BHR system, because the capacity difference between hot from the condenser and cool from the evaporator was smaller than that for the convective terminal.
Keywords: Balanced heat recovery, Energy performance, Terminal system, Comparison study
Pages: 838 - 845