Abstract
The performance of open refrigerated display cabinet (ORDC) is largely affected by operational parameters and ambient air parameters, especially for that with two air curtains. Therefore, this paper aims to find a suitable operational range (volume flow and volume flow ratio) to satisfy the different ambient conditions for ORDC with two air curtains. Based on the validated 3D model, the average temperature, the thermal entrainment factor (TEF), and the energy consumption are employed as performance indicators. Results showed the ambient parameters had obviously influence on its performance. The increase of air velocity was harmful to the ORDC operation. By changing the stability of air curtain, the air flow direction also had influence on the performance. For the operational parameters, though the increase of volume flow could decrease the average temperature and TEF, it would largely increase the energy consumption. Therefore, the optimal volume flow ranged from 0.08 m(3)/s to 0.1 m(3)/s and volume flow ratio ranged from 1 to 2 were suggested to meet all different ambient air flow direction, during which the lowest average temperature and TEF can be obtained.
NSTL
Elsevier