scholarly journals Design, Selection and Application of Energy Recovery Device in Seawater Desalination: A Review

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4150
Author(s):  
Bin Huang ◽  
Kexin Pu ◽  
Peng Wu ◽  
Dazhuan Wu ◽  
Jianxing Leng
Keyword(s):  
Energy Consumption ◽  
Recovery Rate ◽  
Energy Recovery ◽  
Operating Conditions ◽  
Recovery Efficiency ◽  
Seawater Desalination ◽  
Energy Recovery System ◽  
Recovery System ◽  
Design Selection ◽  
Selection Of

In the seawater desalination system, the energy recovery system is a crucial part, as it consumes a lot of energy and plays a guiding role in the recovery efficiency. Therefore, in the energy recovery system, the recovery rate and energy consumption are the key factors to guide the system design. In order to make the energy recovery device achieve a high recovery rate under conditions of low energy consumption, the design and selection of each device in the system are particularly important. At the current stage, system matching optimization, device design optimization, and function objective optimization are widely used to improve the energy recovery system. In this paper, the design principle of the energy recovery integration system is analyzed, methods of reducing energy consumption and improving recovery efficiency are presented. The study provides guidance for the design and selection of energy recovery devices under different operating conditions.

scholarly journals An Innovative Design of Decoupled Regenerative Braking System for Electric City Bus Based on Chinese Typical Urban Driving Cycle

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Yanfeng Xiong ◽  
Qiang Yu ◽  
Shengyu Yan ◽  
Xiaodong Liu
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Control Strategy ◽  
Recovery Rate ◽  
Energy Recovery ◽  
Regenerative Braking ◽  
City Bus ◽  
Braking System ◽  
Recovery System ◽  
Braking Energy Recovery

This paper proposes a novel decoupled approach of a regenerative braking system for an electric city bus, aiming at improving the utilization of the kinetic energy for rear axle during a braking process. Three contributions are added to distinguish from the previous research. Firstly, an energy-flow model of the electric bus is established to identify the characteristic parameters which affect the energy-saving efficiency of the vehicle, while the key parameters (e.g., driving cycles and the recovery rate of braking energy) are also analyzed. Secondly, a decoupled braking energy recovery scheme together with the control strategy is developed based on the characteristics of the power assistance for electric city bus which equips an air braking system, as well as the regulatory requirements of ECE R13. At last, the energy consumption of the electric city bus is analyzed by both the simulation and vehicle tests, when the superimposed and the decoupled regenerative braking system are, respectively, employed for the vehicle. The simulation and actual road test results show that compared with the superposition braking system of the basic vehicle, the decoupled braking energy recovery system after the reform can improve the braking energy recovery rate and vehicle energy-saving degree. The decoupled energy recovery system scheme and control strategy proposed in this paper can be adopted by bus factories to reduce the energy consumption of pure-electric buses.

scholarly journals A Novel Energy Recovery System for Parallel Hybrid Hydraulic Excavator

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Wei Li ◽  
Baoyu Cao ◽  
Zhencai Zhu ◽  
Guoan Chen
Keyword(s):  
Mathematical Models ◽  
Energy Saving ◽  
Energy Recovery ◽  
Simulation Models ◽  
Hydraulic Excavator ◽  
Recovery Efficiency ◽  
Hydraulic Motor ◽  
Energy Recovery System ◽  
Recovery System ◽  
Main Components

Hydraulic excavator energy saving is important to relieve source shortage and protect environment. This paper mainly discusses the energy saving for the hybrid hydraulic excavator. By analyzing the excess energy of three hydraulic cylinders in the conventional hydraulic excavator, a new boom potential energy recovery system is proposed. The mathematical models of the main components including boom cylinder, hydraulic motor, and hydraulic accumulator are built. The natural frequency of the proposed energy recovery system is calculated based on the mathematical models. Meanwhile, the simulation models of the proposed system and a conventional energy recovery system are built by AMESim software. The results show that the proposed system is more effective than the conventional energy saving system. At last, the main components of the proposed energy recovery system including accumulator and hydraulic motor are analyzed for improving the energy recovery efficiency. The measures to improve the energy recovery efficiency of the proposed system are presented.

scholarly journals UNIDIRECTIONAL BRAKING ENERGY RECOVERY SYSTEM FOR ELEVATORS

2019 ◽  
Vol 3 ◽  
pp. 124
Author(s):  
Kaspars Kroics
Keyword(s):  
Energy Storage ◽  
Energy Recovery ◽  
Main Element ◽  
Test Results ◽  
Energy Recovery System ◽  
Recovery System ◽  
Converter Topology ◽  
Li Ion ◽  
Braking Energy Recovery ◽  
Selection Of

The paper discusses design of energy storage based energy recovery system for elevators. The main element of such system is unidirectional DC-DC converter to control energy flow to supercapacitor or li-ion battery based energy storage. The paper gives explanation of selection of the converter topology and some design considerations. The test results of experimental prototype on a developed test bench are presented in the paper.

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