Journal of Appliance Science & Technology ›› 2021, Vol. 0 ›› Issue (6): 16-24.doi: 10.19784/j.cnki.issn1672-0172.2021.06.001

• Articles • Previous Articles     Next Articles

Development and application of online performance testing technology for room air conditioners

YU Tianchan, YANG Zixu, DING Lianrui, HUANG Wenyu, SHI Wenxing   

  1. Department of Building Science, Tsinghua University Beijing 100084
  • Online:2021-12-01 Published:2022-01-05

Abstract: Finding out the actual field performance of room air conditioners is of great significance to improve its control strategy and reduce operational energy consumption and cost. Firstly, systematically summarizes the current situation and development of field performance measurement technology, and points out that the compressor energy conservation method (CEC method) is a practical and feasible long-term online performance measurement method that can meet the requirements of non-intrusive, non-interference, and appropriate accuracy. Aiming at the contradiction between the fixed sensor position and the dynamic change of refrigerant state parameters, and the compressor performance degradation and long-term high-precision measurement in the CEC method, the implementation of the "all-condition refrigerant flow method" that based on the dynamic correction of the CEC method is analyzed. The domestic and foreign online performance measurement standards for air conditioners are summarized, and the calibration method of domestic online performance measurement instrument accuracy is mainly introduced. On this basis, the online performance measurement results of air conditioners are given through several typical cases, and the operating characteristics, energy efficiency status and development trend of online performance measurement technology are analyzed.

Key words: Room air conditioner, Operating performance, Standards, Energy balance, Volumetric efficiency

CLC Number: