The invention discloses a hydraulic energy storage tank including a pressure-bearing storage tank; the adiabatic index of gas filled in the pressure-bearing storage tank is more than 1.40. The hydraulic energy storage tank disclosed by the invention has high energy density, and can control temperature rising.
2. An overview of fundamentals. Even though the goal of an RBS is to recuperate as much kinetic energy as possible during braking processes, it is also crucial for the system to decelerate the vehicle safely and comfortably. Brake safety and stability are major criteria in evaluating RBSs [18], [19], [20].
Filling the tank with solid materials makes it possible to reduce the cost of the thermal energy storage system. It also maintains the thermal stratification in stand-by periods. Solid materials slightly increase the pressure drop; Bruch et al. [7] found a maximum of 140 mbars pressure drop, for an oil at 41 °C flowing at 2500 kg h −1, …
The compressed air energy storage system has a better energy density, while the widely used hydraulic one is superior in power performance. Therefore, they are suitable for different hybrid vehicles, which require a comparative study on the …
Energies 2022, 15, 4292 3 of 17 2. Reservoir Rock Physical Property The tight sandstone cores from Q1 and L66 of Liaohe Oilfield, and the basic in-formation of these tight sandstone cores in the experiments, are shown in Table1. It shows that the porosity of tight