Application of the air-conditioning system energy simulation for commissioning (ACSES/Cx) tool to HVAC system commissioning-Part 2: Application to the Substation of a Heat Source System with Bleed-in Control

Simulation tools are effective for the commissioning of HVAC systems. In particular, such tools are useful not only for simulating the current state of systems but also for simulating the performance of a system provided with efficiency improvements. The Air-Conditioning System Energy Simulation for Commissioning (ACSES/Cx) tool is a software tool developed to provide specialized functions for the commissioning process. In the present paper, the ACSES/Cx simulation tool is applied to the substation of a secondary heat source system and secondary air-handling units (AHUs) of a large-scale building. We attempt to show how the ACSES/Cx tool can be used to simulate actual sophisticated systems with sufficient accuracy with a simplified model and can be used to evaluate energy-saving improvements or renovation of the system.