Capsule energy storage pump

How do thermal storage capsules work?

Three types of thermal storage capsules with different phase change temperatures (PCT), as shown in Fig. 1 (b), are selected and filled in layers in the tank to form the packed bed thermal energy storage (PBTES). A spiral nozzle and ring water distributor are used to reduce the heat flow disturbance during the charging and releasing cycles.

What are the benefits of a packed bed thermal energy storage unit?

Packed bed thermal energy storage unit with cascaded multi-size capsuled designed. Thermal storage performance and cost-benefit evaluation of the novel unit presented. Maximum increment of 49.7% for income from power savings calculated. Energy-saving potential revealed maximum 21.2% rise for energy utilization.

Can a multi-size packed bed thermal energy storage unit save energy?

Energy-saving potential revealed maximum 21.2% rise for energy utilization. A novel cascaded multi-size packed bed thermal energy storage unit is introduced, as well as its thermal storage and techno-economic performance are revealed. The one-dimensional concentric dispersion model is established and validated through experiments.

Can a cascaded packed bed thermal energy storage unit solve low energy utilization?

However, there are still problems of low energy utilization and poor heat transfer for packed bed type, which will affect the unit's thermal response time and cost in practical engineering applications. To solve the problem of low energy utilization, researchers have proposed a cascaded packed bed latent heat thermal energy storage unit.

How many stages should a cascaded packed bed cool thermal energy storage unit use?

Cheng et al. designed a cascaded packed bed cool thermal energy storage unit using multiple phase change materials and recommended using 3–5 stages for an evenly distributed cascade, which results in a 15.1% reduction in charging time compared to a single-stage unit.

Does a 40 mm capsule size affect exergy efficiency?

As the flow rate is fixed, the cases filled capsule with diameter 40 mm at bottom have the similar results in overall exergy efficiency, charging time and energy utilization. The results are better than those of other cases. Moreover, the capsule size has almost no effect on effective discharging time. Fig. 16.