An experimental study on applying organic PCMs to gypsum-cement board for improving thermal performance of buildings in different climates

2019 ◽  
Vol 190 ◽  
pp. 183-194 ◽  
Author(s):  
Su-Gwang Jeong ◽  
Seunghwan Wi ◽  
Seong Jin Chang ◽  
Jongki Lee ◽  
Sumin Kim
Keyword(s):  
Experimental Study ◽  
Thermal Performance ◽  
Different Climates ◽  
Cement Board

Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts

2020 ◽  
Vol 92 (3) ◽  
pp. 30901
Author(s):  
Suvanjan Bhattacharyya ◽  
Debraj Sarkar ◽  
Ulavathi Shettar Mahabaleshwar ◽  
Manoj K. Soni ◽  
M. Mohanraj
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Thermal Performance ◽  
Working Fluid ◽  
The Novel ◽  
Heat Exchanger Tube ◽  
Heat Transfer Augmentation ◽  
Corrugated Tube ◽  
The Impact ◽  
Exchanger Tube

The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed.

Daylight and thermal performance of a switchable ethylene tetra-fluoro-ethylene cushion with dynamic control in different climates

2021 ◽  
Author(s):  
Wanfang Zhao ◽  
Wei He ◽  
Zhongting Hu ◽  
Xiaoyu Zheng ◽  
Sheng Zhang ◽  
...  
Keyword(s):  
Thermal Performance ◽  
Dynamic Control ◽  
Different Climates

Experimental study on the thermal performance of a novel physically separated chilled water storage tank

2021 ◽  
Vol 40 ◽  
pp. 102628
Author(s):  
Qin Sun ◽  
Hao Wang ◽  
Kaijun Dong ◽  
Tai Lv ◽  
Zhibo Kang
Keyword(s):  
Experimental Study ◽  
Thermal Performance ◽  
Storage Tank ◽  
Water Storage ◽  
Water Storage Tank ◽  
Chilled Water
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