Continuous production of cryogenic energy at low-temperature using two-stage ejector cooling system, Kalina power cycle, cold energy storage unit, and photovoltaic system

2021 ◽  
Vol 227 ◽  
pp. 113541
Author(s):  
Bahram Ghorbani ◽  
Armin Ebrahimi ◽  
Mostafa Moradi ◽  
Masoud Ziabasharhagh
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
Cooling System ◽  
Continuous Production ◽  
Photovoltaic System ◽  
Storage Unit ◽  
Two Stage ◽  
Energy Storage Unit ◽  
Power Cycle ◽  
Cold Energy

scholarly journals A Grid-Supporting Photovoltaic System Implemented by a VSG with Energy Storage

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3152 ◽  
Author(s):  
Huadian Xu ◽  
Jianhui Su ◽  
Ning Liu ◽  
Yong Shi
Keyword(s):  
Energy Storage ◽  
Synchronous Generator ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Frequency Regulation ◽  
Pv System ◽  
Storage Unit ◽  
Support Functions ◽  
Energy Storage Unit ◽  
Pv Systems

Conventional photovoltaic (PV) systems interfaced by grid-connected inverters fail to support the grid and participate in frequency regulation. Furthermore, reduced system inertia as a result of the integration of conventional PV systems may lead to an increased frequency deviation of the grid for contingencies. In this paper, a grid-supporting PV system, which can provide inertia and participate in frequency regulation through virtual synchronous generator (VSG) technology and an energy storage unit, is proposed. The function of supporting the grid is implemented in a practical PV system through using the presented control scheme and topology. Compared with the conventional PV system, the grid-supporting PV system, behaving as an inertial voltage source like synchronous generators, has the capability of participating in frequency regulation and providing inertia. Moreover, the proposed PV system can mitigate autonomously the power imbalance between generation and consumption, filter the PV power, and operate without the phase-locked loop after initial synchronization. Performance analysis is conducted and the stability constraint is theoretically formulated. The novel PV system is validated on a modified CIGRE benchmark under different cases, being compared with the conventional PV system. The verifications demonstrate the grid support functions of the proposed PV system.

scholarly journals Evaluation of an Energy Storage Module as the Primary Heat Source for Greenhouse Production of Bedding Plants

1994 ◽  
Vol 4 (3) ◽  
pp. 281-285 ◽  
Author(s):  
Richard H. Merritt ◽  
K.C. Ting
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
Leaf Area ◽  
Dry Matter ◽  
Tagetes Patula ◽  
Storage Unit ◽  
Greenhouse Production ◽  
Energy Storage Unit ◽  
Bedding Plants ◽  
Change Material

A phase change material (PCM) energy storage unit operating in a greenhouse from 29 Oct. through 21 Dec. 1992 cooled it on the average 1.7C in the day and warmed it 2.2C at night due to both sensible and latent heat absorbed, released, and circulated. Tagetes patula `Mighty Marietta' and `Early Queen Sophia' marigolds and Viola × Wittrockiana `Yellow Blotch' and `Blue Blotch' pansies were grown in a PCM and a control (no PCM) greenhouse. Temperatures went below 0C 10 days in the control greenhouse and 4 days in the PCM greenhouse. The lowest temperature of -7.8C killed the marigolds in the control greenhouse. Neither marigolds nor pansies were killed in the PCM greenhouse, which attained a low temperature of -3.3C. On 4 Dec., plants were destructively harvested. Morphologically the marigolds were taller, and had more leaf area and dry matter when grown in the PCM greenhouse as compared to the control, but pansies were taller, and had more leaf area and dry matter when grown in the control greenhouse, as compared to the PCM greenhouse.

Design of a Continuous Solar Desalination System with Humidification-Dehumidification Cycle

2014 ◽  
Vol 953-954 ◽  
pp. 47-51
Author(s):  
Yang Chen ◽  
Qing Fen Ma ◽  
Li Xin Xie ◽  
Wen Jin He
Keyword(s):  
Energy Storage ◽  
Heat Source ◽  
Process Parameters ◽  
Continuous Production ◽  
Water Reservoir ◽  
Hot Water ◽  
Electric Heater ◽  
Storage Unit ◽  
Energy Storage Unit ◽  
Solar Desalination

A continuous solar desalination system with humidification-dehumidification cycle was devised. Solar energy was chosen as the main heat source, the electric heater the auxiliary heat source, and the hot water reservoir the energy storage unit. To ensure the 24-hour continuous production of fresh water, four specific operation modes were designed and analyzed for the conditions of average, excess, insufficient and no illumination intensity respectively, based on which the methods for the judgment and calculation of process parameters were derived.

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