A novel two-stage compression air-source heat pump cycle combining space heating, cooling, and domestic hot water production. / Liu, Jian; Zhou, Lu; Cheng, Jianhong et al. In: Energy and Buildings, Vol. 285, 112863, 15.04.2023.Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
In ACAES, the heat from the compression is stored and is used to reheat the air prior to expansion, removing the need for additional fuel but necessitating a thermal energy store (TES). However, whereas DCAES and ACAES might be similar to some degree, the need to store the compression heat dramatically changes the design of …
20–40% of air compression heat is excess in liquid air energy storage (LAES). • The excess heat is proposed to use in an organic Rankine cycle (ORC). • Round trip efficiency of the LAES could be improved by 9–12%. • …
At the same time, the compression heat is absorbed in the intercooler by cold thermal storage medium (pressured water herein), which is stored in the hot tank subsequently. As for the discharging process, the high-pressure air released from air storage chamber is heated in the reheater by the hot thermal storage medium, and then …
Compressed air energy storage (CAES) is the use of compressed air to store energy for use at a later time when required [41–45]. Excess energy generated from renewable …
In the case of heat management, the CAES system is called advanced adiabatic (AA-CAES) where electrical efficiency (output/input) can range from 40 to 70% depending on the heat management method resulting from …
Compressed air energy storage is a promising technique due to its efficiency, cleanliness, long life, and low cost. This paper reviews CAES technologies …
Compressed air energy storage systems may be efficient in storing unused energy, but large-scale applications have greater heat losses because the …
OverviewTypes of systemsTypesCompressors and expandersStorageHistoryProjectsStorage thermodynamics
Brayton cycle engines compress and heat air with a fuel suitable for an internal combustion engine. For example, burning natural gas or biogas heats compressed air, and then a conventional gas turbine engine or the rear portion of a jet engine expands it to produce work. Compressed air engines can recharge an electric battery. The apparently-defunct
Thermodynamic analysis of hybrid liquid air energy storage systems based on cascaded storage and effective utilization of compression heat Appl Therm Eng, 164 ( 2020 ), Article 114526 View PDF View article View in Scopus Google Scholar
The ORC and the ARC are adopted to utilize high-grade compression heat in an LAES system with a four-stage compressor and a four-stage expander, while the HTHP is used to utilize medium-grade …
Using wind power, the system was called hybrid thermal–compressed air energy storage, which further increased the temperature of the heat storage (theoretical analysis indicated the …
For the air storage capacity, the sum of weights of the density (42.2 %) and latent heat (35.2 %) can attain 77.4 %, which means the other three factors including melting temperature (9.1 %), specific heat (7.2 %) …
As an effective approach of implementing power load shifting, fostering the accommodation of renewable energy, such as the wind and solar generation, energy storage technique is playing an important role in the smart grid and energy internet. Compressed air energy storage (CAES) is a promising energy storage technology due …
Compressed Air Energy Storage (CAES) suffers from low energy and exergy conversion efficiencies (ca. 50% or less) inherent in compression, heat loss during storage, and the commonly employed natural gas-fired reheat prior to expansion. Previously, isothermal, and adiabatic (or ''advanced'' adiabatic) compressed air energy …
But in an AA-CAES system, the compression heat is stored in a thermally insulated unit, and the compressed air is stored in a separate storage …
Glendenning (1976) and (1981) examined the prospects of the long-term use of CAES and noted that ''storing all the compression energy'', i.e., including the excess heat (he suggested, for example) by means of pebble-bed heat storage, is of particular
He et al. proposed that the open type isothermal compressed air energy storage (OI-CAES) device was applied to achieve near-isothermal compression of air. This study investigated the effect of tank height, tank volume and flow rate of the pump unit on parameters such as air temperature, water temperature and air pressure inside the …
Compression heat recovery reduces the LCOE by 37.9 % and 36.4 % for AS-LNES and AS-LNES-WHSM, respectively. By implementing mixed power generation operation and recovering compression heat for air purification processes, the …
Utilization of LNG cold energy reduces power consumption in the production of liquid air that can be used in energy storage systems [17][18][19]. The heat collected from the inter-coolers of the ...
DOI: 10.1016/j.enconman.2023.116729 Corpus ID: 256532920 Techno-economic analysis of solar aided liquid air energy storage system with a new air compression heat utilization method @article{Li2023TechnoeconomicAO, title={Techno-economic analysis of ...
Optimal Utilization of Compression Heat in Liquid Air Energy Storage Zhongxuan Liu, Ting He, Donghoi Kim, and Truls Gundersen* Cite This: Ind. Eng. Chem. Res. 2023, 62, 5097−5108 Read Online ACCESS Metrics & More Article Recommendations * sı …
Recovering compression waste heat using latent thermal energy storage (LTES) is a promising method to enhance the round-trip efficiency of compressed air energy storage (CAES) systems. In this study, a systematic thermodynamic model coupled with a concentric diffusion heat transfer model of the cylindrical packed-bed …
By storing compression heat using thermal energy storage in charge stage and reusing it when the air is expanded to produce power in discharge stage, an adiabatic compressed air energy storage (A-CAES) system has been thus proposed for fuel free operation
In recent years, liquid air energy storage (LAES) has gained prominence as an alternative to existing large-scale electrical energy storage solutions such as compressed air (CAES) and pumped hydro energy storage (PHES), especially in the context of medium-to-long-term storage. LAES offers a high volumetric energy density, …
During the halt, only the air storage equipment dissipates heat. Therefore, in the analysis of the proposed AA-CAES-CHP system, only the charging and discharging modes are considered. The air storage equipment of this system is based on the previous study
The storage subsystem consists of three stores, one for liquid air (main store), one for compression heat and one for high-grade cold energy. A detailed working …
Compressed-air energy storage can also be employed on a smaller scale, such as exploited by air cars and air-driven locomotives, and can use high-strength (e.g., carbon-fiber) air-storage tanks. In order to retain the energy stored in compressed air, this tank should be thermally isolated from the environment; otherwise, the energy stored will …
unused compression heat in an ORC, Zhang et al.13 also tried a Kalina Cycle (KC) to utilize the unused compression heat. The results suggest that the LAES system with an …