02.2021.71.77

AIR-COOLED CHILLER EXPERIMENTAL SET-UP AND THE PRIMARY EXPERIMENTAL RESULTS

Author(s):

Phan Thi Thu Huong†‡, Hoang Mai Hong‡, Lai Ngoc Anh†*

Affiliation(s):

†School of heat engineering and refrigeration, Hanoi University of Science and Technology, Hanoi, Vietnam

‡Namdinh University of Technology Education, Namdinh, Vietnam

Corresponding Author Email: anh.laingoc@hust.edu.vn

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

This paper presents a small air-cooled chiller experimental set-up being used to investigate the energy performance and other characteristics of an air-cooled chiller system using various refrigerants. The expanded uncertainty of measure temperature devices with a level of confidence of 95% is 0.21 K. The expanded uncertainty of measure pressure devices with a level of confidence of 95% is 2.7 kPa. The uncertainty of the enthalpy from this study is 0.66 kJ/kg, about 0.24 %. If the chilled water temperature is 8C, the COP is 2.55. If the chilled water temperature is 12 C, the COP is 2.89, an increase of 13%. The COP increases about 13 % whilst the chilled water temperature increase only 4 K.