Rapid economic expansion and social development have led to increased demand for renewable energy. The situation calls for fulfilling rising energy consumption while also lowering pollution levels. Because of seasonal changes, renewable energy sources (such as wind and solar) are inherently unstable. Thus, they are incompatible for being integrated into energy storage, critical for balancing energy demand and supply. In this regard, thermal energy storage could be a viable idea. Materials scientists have already demonstrated how phase transition materials can boost energy density in thermal energy storage. However, the models could only accomplish modest charging and discharging speeds.
A unique stratified phase change emulsion tank for cold storage was revealed in a new report by a group of scientists. The newly built stratified storage tank of PCM-in-water nano-emulsion has a modest temperature differential between the cooling supply and demand. It could significantly contribute towards the Thermal Energy Storage Market exceptionally favorable in enhancing the overall efficiency of the energy system.
The researchers used numerical experimental methods to develop radiant cooling applications for cold storage. They demonstrated a new stratified storage tank of phase change materials (PCM) in water nano-emulsion.
The team used a 20 percent PCM-in-water nano-emulsion as the storage medium and heat transfer fluid. They achieved a 60 percent improvement in cooling capacity with PCE (Phase Change Emulsion) circulating in the loop. The numerical calculations showed that baffle plates inserted in the storage tank might limit fluid mixing, resulting in a considerable increase inadequate energy storage capacity at high discharge flow rates.
The PCE storage tank was utilized to circulate nano-emulsion while also transferring and storing heat in the system. Compared to conventional storage tanks containing water or phase, this breakthrough greatly enhanced storage capacity and charging and discharging rates.
The researchers improved the experimental setup using baffle plates to obtain desirable and practical energy efficiency in PCE storage beyond the defined dimensions of SWS tanks. To emphasize the thermal efficiency of PCM (Phase Change Material) emulsion, the PCE (phase change emulsion) tank's effective energy ratio is greater than the SWS tank. The team believes that this technique would be better based on the experimental and computational results. It could have applications for emergency cooling of computing systems in quickly developed data centers.
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