23 September 2011

FIELD MEASUREMENT ON THE PERFORMANCE OF VRV SYSTEM BY PROBE INSERTION METHOD


This paper reports on the Probe Insertion Method for On-site Evaluation of the
Variable Refrigerant Flow (VRF) system and the evaluation results for both Gas Engine-
Driven (GHP) and Electrical Motor-Driven (EHP) VRF systems. The probe insertion method
consists of both computer modelling and direct measurements of the heat exchange of the
outdoor unit. The actual measurements were conducted in the prefectures of Tokyo, Osaka,
Kochi and Hokkaido, Japan. These candidate buildings consisted of an office, a government
office and a school cafeteria. The experiment was carried out from summer to winter to see
both the effects of cooling and heating. In this study, the authors detail the probe insertion
method, which is a simple measurement technique, and also present the results from the
actual measurements.