Measure of bubble non-uniformity within circular region in a direct-contact heat exchanger

Q Xiao, J Pan, Z Lv, J Xu, H Wang - International Journal of Heat and Mass …, 2017 - Elsevier
The study of bubble swarm distributions in a direct-contact heat exchanger was addressed
both theoretically and experimentally. But recently developed approach based on uniform …

A novel approach for measuring bubbles uniformity and mixing efficiency in a direct contact heat exchanger

Y Fei, Q Xiao, J Xu, J Pan, S Wang, H Wang, J Huang - Energy, 2015 - Elsevier
This paper presents a straightforward method for assessing the uniformity and mixing time of
bubbles based on uniform design in a direct contact heat exchanger. The evolution of …

A modified L2-star discrepancy method for measuring mixing uniformity in a direct contact heat exchanger

J Xu, Q Xiao, Y Chen, Y Fei, J Pan, H Wang - International Journal of Heat …, 2016 - Elsevier
There is a linear relationship between the flow patterns of a bubble swarm and heat transfer
from the viewpoint of experimental analysis. To investigate the space–time features of the …

Evolution and quantification of distribution uniformity of bubbles using computational geometry

H Sun, Z Li, S Wang, J Xu, H Wang - Chemical Engineering Science, 2022 - Elsevier
To address the problem of large differences in the mixing time calculated by different
characterization methods, this paper proposes an average distance (AD) method, a novel …

Direct-contact heat exchanger

H Wang, Q Xiao, J Xu - Heat Exchangers-Design, Experiment …, 2017 - books.google.com
Direct-contact heat transfer involves the exchange of heat between two immiscible fluids by
bringing them into contact at different temperatures. There are two basic bubbling regimes in …

A novel method for measuring spatial uniformity of irregular boiling bubbles in a direct contact heat exchanger

Q Wang, J Huang, J Pan, H Wang… - International Journal of …, 2020 - Wiley Online Library
As the binary image fails to reflect the density distribution of the bubble, this paper proposes
an improved new indicator for accurate measurement of spatial uniformity based on gray …

Quantifying the synergy of bubble swarm patterns and heat transfer performance using computational homology

J Huang, J Xu, X Sang, H Wang, H Wang - International Journal of Heat …, 2014 - Elsevier
This paper proposes a novel method to quantify the synergy of bubble swarm patterns and
heat transfer performance in a direct-contact heat exchanger (DCHE) by using …

Quantification and correlation analysis of bubble characteristics and heat transfer performance in direct contact heat exchanger

R Shen, Z Fan, J Xu, B Li, H Wang - Applied Thermal Engineering, 2024 - Elsevier
In this work, a combination of morphological processing and watershed algorithm is
proposed to measure bubble size, based on which an improved frame difference method is …

Interplay of fluids mixing and heat transfer in a dual-loop ORC direct contact heat exchanger used for waste heat utilization

Q Xiao, W Luo, J Huang, J Xu… - Proceedings of the …, 2020 - journals.sagepub.com
By bringing two immiscible fluids at different temperatures into a direct contact heat
exchanger (DCHE), bubble swarms are produced in the dual-loop ORC direct contact …

Extraction and evolution of bubbles attributes in a two-phase direct contact evaporator

Q Xiao, Q Gao, J Zhang, J Xu, J Pan, H Wang - International Journal of Heat …, 2018 - Elsevier
Understanding the bubble regimes is a fundamental step toward conducting heat transfer
enhancement. The non-invasive measurement of mixing inside a direct-contact heat transfer …