Optimization design method and calculation analysis tool for high efficiency refrigeration rooms

The calculation process of commonly used energy consumption calculation software is complex, and it is easy to ignore the partial load performance, lacking of overall energy efficiency evaluation indicators of the refrigeration room, which makes it difficult to achieve rapid optimization and selection of efficient refrigeration rooms. This paper proposes a method to optimize the design of the refrigeration room by taking the overall energy consumption of the refrigeration room, the annual evaluation efficiency ACPEC, and the actual comprehensive partial load performance coefficient IPLVR as evaluation indicators, and it can simply and clearly evaluate the performance of the refrigeration room. Based on the webpage, a calculation and analysis tool (SmartCP) for high efficiency refrigeration room is established. By simplifying the calculation process and input and output parameters, the energy consumption calculation model of each equipment is established by fitting and combining the least square method, which can calculate the annual hourly energy consumption and energy efficiency evaluation indicators of the refrigeration room online. The overall energy consumption of the four unit configuration schemes of the refrigeration room in the case building is calculated. The relative errors between the SmartCP calculation results and the TRACE700 software calculation results is less than 6%, and the prediction errors of the energy consumption of the chiller and water pump meet the engineering requirements.