Jet performance exploration of an ejector for multi-parallel ejector air curtain

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2025-03-18 DOI:10.1016/j.icheatmasstransfer.2025.108868

Yabo Wang, Xinxin Guo, Xinghua Liu, Cong Shi

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引用次数: 0

Abstract

Since conventional fan-driven air curtains are unsuitable for the blood plasma cold storage, the proposed multi-parallel ejector air curtain (EAC) in previous research could address these issues by utilizing compressed air ejectors arranged in parallel, forming an effective air barrier to minimize air infiltration and associated cooling load loss. As the key component of EAC, the jet performance of ejector plays a significant role in the aerodynamic sealing of the cold storage. The study focuses on optimizing key geometric parameters of the ejector, specifically the area ratio (AR) and the nozzle exit position (NXP). Experimental measurements and numerical simulations were conducted to evaluate the jet performance of different ejector configurations. Then the best and the original configurations of ejectors (Case 2 and Case 5) were applied to compose EAC for comparatively explore the impact of operational parameters on sealing performance of cold store. Results indicate that Case 2 ejectors significantly enhance performance of the EAC with a maximum aerodynamic sealing of 66.35 %. And compared with the EAC composed of Case 5 ejectors, the internal average temperature rise and the moisture content in cold storage were reduced by 0.2 °C and 3.78 % respectively, when fixed with Case 2 ejectors.

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.