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Journal of Refrigeration, Air conditioning, Heating and ventilation Review Article

Continuous Commissioning Techniques for Ground Source Heat Pumps: Review

  1. Nagendra Singh Department of Mechanical Engineering, Institute of Engineering and Technology, Dr. Bhimrao Ambedkar University, Swami Vivekanada Campus
  2. Sanjeev Kumar Verma Department of Mechanical Engineering, Central Instrumentation Facility Research and Development Cell, Lovely Professional University, Phagwara

Abstract

This study offers a model-based continuous commissioning methodology to find control-related performance gaps in HVAC systems with ground-source heat pumps. Traditional continuous commissioning is still helpful in finding energy performance gaps, even if MBCCx employs a system model as a reference to find operational inefficiencies and control issues arising from subsystem integration. A calibrated physics-based model that depicts the system performance as intended during the design phase forms the basis of the suggested methodology. One major benefit is that, in contrast to data-driven approaches that depend on large historical datasets, it can be applied early in a building's operational phase when data is scarce. This enables the identification of energy-saving opportunities before the system reaches a stable operational state. This work pioneers the application of MBCCx to entire buildings equipped with GSHPs in order to overcome the limitations of previous research that frequently concentrate only on individual GSHP component performance. In order to forecast variables like room temperatures, heat pump power, and ground heat exchanger temperatures under typical circumstances, the suggested method makes use of a comprehensive 3D building model and component-level HVAC modeling. Under performing components or anomalies in the control sequence are indicated by significant differences between monitored values and model expectations. The HVAC system and GSHP performance indicators are then combined to increase the precision of anomaly identification. A case study of a recently renovated elementary school in Quebec, Canada, that has five standing column wells installed as ground heat exchangers is used to illustrate the methodology.

Keywords

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