Capsule: An Energy-Optimized Object Storage System for Memory-Constrained Sensor Devices Gaurav Mathur, Peter Desnoyers, Deepak Ganesan, Prashant Shenoy {gmathur, pjd, dganesan, shenoy}@cs.umass Department of Computer Science University of Massachusetts, Amherst, MA 01003 Abstract 1 Introduction Recent gains in energy
Read MoreThermal energy storage technology [6] can be divided into sensible heat storage, latent heat storage, and thermochemical heat storage according to its working
Read MoreTo optimize the utilization of solar energy in the latent heat thermal energy storage (LHTES) system, this study conducts exergy analysis on a paraffin-solar water shell and tube unit established
Read Moreand greater energy-efficiency than existing sensor storage solutions, while operating even within the memory constraints of the Mica2 Mote. Our ex-periments not only demonstrate the energy and memory-efficiency of I/O operations in Capsule but also shows that Capsule consumes less than 15% of the total energy cost in a typical sensor application.
Read MoreEnergy storage devices (ESDs) include rechargeable batteries, super-capacitors (SCs), hybrid capacitors, etc. A lot of progress has been made toward the development of ESDs since their discovery. Currently, most of the research in the field of ESDs is concentrated on improving the performance of the storer in terms of energy
Read MoreThe structural design of energy devices can achieve satisfactory energy conversion and storage performance. To achieve lightweight design, improve mechanical support, enhance electrochemical performance, and adapt to the special shape of the device, the structural energy devices develop very quickly.
Read MoreConsidering rapid development and emerging problems for photo-assisted energy storage devices, this review starts with the fundamentals of batteries and supercapacitors and follows with the state-of-the-art photo-assisted energy storage devices where device components, working principles, types, and practical
Read MoreAs an efficient energy storage method, thermodynamic electricity storage includes compressed air energy storage (CAES), compressed CO 2 energy storage (CCES) and pumped thermal energy storage (PTES). At present, these three thermodynamic electricity storage technologies have been widely investigated and play
Read MoreSection 2 delivers insights into the mechanism of TES and classifications based on temperature, period and storage media. TES materials, typically PCMs, lack thermal conductivity, which slows down the energy storage and retrieval rate. There are other issues with PCMs for instance, inorganic PCMs (hydrated salts) depict
Read MoreA packed-bed thermal energy storage (PBTES) device, which is simultaneously restricted by thermal storage capacity and outlet temperatures of both cold and hot heat transfer fluids, is characterized by an unstable operation condition, and its calculation is complicated. To solve this problem, a steady thermodynamics model of
Read MoreThis review summarizes the latest developments in structural energy devices, including special attention to fuel cells, lithium-ion batteries, lithium metal batteries, and supercapacitors. Finally, the existing problems of structural energy devices are discussed, and the current challenges and future opportunities are summarized and
Read MoreAn electrochemical energy storage device has a double-layer effect that occurs at the interface between an electronic conductor and an ionic conductor which is a basic phenomenon in all energy storage electrochemical devices (Fig. 4.6) As a side reaction in electrolyzers, battery, and fuel cells it will not be considered as the primary
Read MoreFill the capsule with nitrogen. There is nitrogen in the capsule, and the chamber includes the capsule and shell. After being added to the outlet of the check valve. The gas volume in the capsule decreases with the increase of pressure. So as to absorb the impact hydraulic energy and reduce or eliminate the pressure impact of the system.
Read MoreThis paper reviews the performance research of the packed-bed latent thermal energy storage system with spherical PCM capsules (PLTES-SC) and their optimization design and application. Firstly, the basic information of the PLTES-SC is
Read MorePrinciple of energy storage in electrochemical capacitors. EC devices have gained considerable interest as they have the unique features of a speedy rate of charging–discharging as well as a long life span. Charging–discharging can take place within a few seconds in EC devices. They have higher power densities than other energy
Read MoreThey are the most common energy storage used devices. These types of energy storage usually use kinetic energy to store energy. Here kinetic energy is of two types: gravitational and rotational. These storages work in a complex system that uses air, water, or heat with turbines, compressors, and other machinery.
Read MoreStarting from physical and electrochemical foundations, this textbook explains working principles of energy storage devices. After a history of galvanic
Read MoreThermal energy storage devices store energy in the form of heat by heating water like a medium, but similar infrastructural shortcomings are associated with these devices. The working principle of EDLCs essentially involves the formation of an oppositely charged ionic double layer at each electrode-electrolyte interface.
Read MoreSupercapacitors can store electric charge through a process called double layer capacitance. They have a higher power density than batteries but a lower energy density. A supercapacitor increases its capacitance and energy storage capacity by increasing the surface area of its electrodes and decreasing the distance between them.
Read MoreCapsule employs a hardware ab straction layer that hides the vagaries. of flash memories for the application and supports energy-optimized imple-. mentations of commonly used storage objects such
Read MoreSection 7 summarizes the development of energy storage technologies for electric vehicles. 2. Energy storage devices and energy storage power systems for BEV. Energy systems are used by batteries, supercapacitors, flywheels, fuel cells, photovoltaic cells, etc. to generate electricity and store energy [16]. As the key to energy storage and
Read MoreIn this paper we propose Capsule, an energy-efficient flash-based storage substrate for sensor platforms that over-comes the abovedrawbacks. The design and implementation of Capsule has led to the following contributions: Object-based abstraction:Capsule provides the abstrac-tion of typed storage objects to applications; supported ob-
Read MoreVarious energy storage devices are highly demanded by o ur modern society. The use of solar energy, an important green energy source, is extremely attractive for future energy storage. Recently, photo-assisted energy storage devices have rapidly developed as they efficiently convert and store solar energy, while their configurations are simple and their
Read MoreSuch PEC-MH configurations enable direct solar energy to hydrogen conversion and its subsequent storage in a single device (A-type devices) that, in some cases, can also release the stored (hydrogen) energy on demand (B-type devices). The device can work either as: 1) a standard PEC module, in which the hydrogen formation
Read MoreThey are the most common energy storage used devices. These types of energy storage usually use kinetic energy to store energy. Here kinetic energy is of two types: gravitational and rotational. These
Read MoreThe mechanisms and storing devices may be Mechanical (Pumped hydroelectric storage, Compressed air energy storage, and Flywheels), Thermal
Read MoreThe spherical PCM capsules with an identical inner radius of 20 mm and a shell thickness of 1 mm, are stacked sequentially in a cylindrical packed bed. The capsules are arranged in nine layers with 19 capsules in each. The inner diameter of the packed bed is D = 220 mm and the length is L = 378 mm. Water serves as the heat transfer fluid.
Read MoreEncapsulated ice storage is a technique by which cool thermal energy is stored and released by means of the water (as PCM) being encapsulated using HDPE containments or small steel containers. The typical charging and the discharging processes of encapsulated ice storage system depicted in Fig. 5.28.
Read MoreThe performance improvement for supercapacitor is shown in Fig. 1 a graph termed as Ragone plot, where power density is measured along the vertical axis versus energy density on the horizontal axis. This power vs energy density graph is an illustration of the comparison of various power devices storage, where it is shown that
Read MoreConsidering rapid development and emerging problems for photo-assisted energy storage devices, this review starts with the fundamentals of batteries and supercapacitors and
Read More6 · Solar cell, any device that directly converts the energy of light into electrical energy through the photovoltaic effect. The majority of solar cells are fabricated from silicon—with increasing efficiency and lowering cost as the materials range from amorphous to polycrystalline to crystalline silicon forms.
Read MoreA flywheel energy storage can have energy fed in the rotational mass of a flywheel, store it as kinetic energy, and release out upon demand. They work by spinning up a heavy disk or rotor to high speeds and then tapping that rotational energy to discharge high power bursts of electricity. It is difficult to use flywheels to store energy for
Read MoreThe device''s design encompasses principles from the soft Sarrus linkage concept and miniature permanent magnets, facilitating reciprocating motion influenced by
Read Morematerial container device for storing an amount ofa PCM storage material for acting as a heat collector element, consisting of a packaging capsule (5) comprising a rigid housing (51) enclosing a fillable space for storing said PCM material therein. It is remarkable in that said pack-aging capsule has a toroidal ring shape, in that the outer
Read MoreThe energy storage process occurred in an electrode material involves transfer and storage of charges. In addition to the intrinsic electrochemical properties of the materials, the dimensions and structures of the materials may also influence the energy storage process in an EES device [103, 104]. More details about the size effect on
Read MoreA tokamak is a machine that confines a plasma using magnetic fields in a donut shape that scientists call a torus. Fusion energy scientists believe that tokamaks are the leading plasma confinement concept for future fusion power plants. In a tokamak, magnetic field coils confine plasma particles to allow the plasma to achieve the conditions necessary for
Read MoreThe document then covers the history of supercapacitor discovery and development, how supercapacitors differ from batteries in terms of charging time and operating temperature, their double-layer capacitance working principle, features, advantages like high power storage and long life, disadvantages like low energy
Read MoreAs the photovoltaic (PV) industry continues to evolve, advancements in working principle of capsule energy storage device have become instrumental in optimizing the utilization of renewable energy sources. From innovative battery technologies to smart energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.
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