| 1. |
- Niu, Z., et al.
(author)
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Experimental investigations on the thermal energy storage performance of shell and tube unit with composite phase change materials
- 2019
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In: Innovative Solutions for Energy Transitions. - : Elsevier. ; , s. 4889-4896, s. 4889-4896
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Conference paper (peer-reviewed)abstract
- This work presented experimental investigations on the thermal energy storage performance of the shell and tube unit with composite phase change materials (PCM). A cylindrical heat storage tank filled with open-cell copper foam was proposed and its melting process characteristics were studied. A designed test system was established to record the PCM real-time temperature data. The results showed that, compared with traditional smooth-tube phase-change heat exchangers, the composite PCM unit accelerated the bottom paraffin melting. The temperature disparity among different height reduced, which resulted in better internal temperature uniformity. Due to the expanded heat transfer area, improved heat transfer coefficient and weakened natural convection, the bottom phase-change materials in the composite-PCM heat-storage unit melt faster.
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| 2. |
- Bai, Q., et al.
(author)
-
Experimental investigation on the solidification behavior of phase change materials in open-cell metal foams
- 2017
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In: Energy Procedia. - : Elsevier Ltd. - 1876-6102. ; , s. 3703-3708
-
Conference paper (peer-reviewed)abstract
- This study presented an experimental investigation on solidification behavior of fluid saturated in highly porous open-cell copper foams. Particular attention has been made on the effect of pore parameters (pore density and porosity) on the solidification behavior. A purposely-designed apparatus was built for experimental observations. Results showed that the copper foam had a great effect on solidification and the full solidification time can be saved up to 50%, especially preventing the decrease in solidification rate during the later stage of phase change. The smaller the porosity is, the faster the solidification rate will be. Pore density was found to have little influence upon the solidification rate. In addition, the local natural convection does exist but it has a slight effect on solidification, leading to the slant of the solid-liquid interface.
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| 3. |
- Bai, Q., et al.
(author)
-
Experimental investigation on the solidification rate of water in open-cell metal foam with copper fins
- 2018
-
In: Energy Procedia. - : Elsevier Ltd. - 1876-6102. ; , s. 210-214
-
Conference paper (peer-reviewed)abstract
- This study focused on the effect of inserting fins into metal foam on the solidification rate. To this aim, a well-designed experimental system with solid-liquid interface visualization was built. Metal foam samples with different fin intervals were prepared for experiments. Solidification process of water saturating in finned metal foam under bottom cooling was experimentally investigated. Results showed that inserting fins into metal foam can make a promotional improvement on solidification rate of water. The solid-liquid interface became curved after inserting fins, compared with metal foam sample without fins. Besides, changing the interval has little effect on the solidification rate.
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