潮汐能驱动的反渗透海水淡化系统的经济性评价

doi:10.1007/s11708-017-0478-2

Frontiers in Energy

2018, Vol. 12

Issue (2): 297-304 https://doi.org/10.1007/s11708-017-0478-2

本期目录

潮汐能驱动的反渗透海水淡化系统的经济性评价

凌长明¹, 王逸飞¹, 闵春华², 张玉文³(

)

¹. 广州海洋大学机械与动力学院，湛江 524025，中国
². 河北工业大学能源与环境学院，天津 300401，中国
³. 密苏里大学机械与航空学院，密苏里州哥伦比亚，美国

Economic evaluation of reverse osmosis desalination system coupled with tidal energy

Changming LING¹, Yifei WANG¹, Chunhua MIN², Yuwen ZHANG³(

)

¹. College of Mechanical and Power Engineering, Guangdong Ocean University, Zhanjiang 524025, China
². College of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
³. Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA

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摘要:

提出了一种潮汐能驱动的反渗透(RO)海水淡化系统。潮汐能通过水力涡轮产生的机械能直接驱动RO装置。本文将常规RO系统和潮汐能RO系统的技术性能及其淡水生产成本进行了比较。研究发现，与常规RO系统相比，本文提出的潮汐能RO系统可节约淡水生产成本31.0%-41.7%。.存在一个最佳的进水压力使得成本最低。在高进料压力或高回收率的情况下，潮汐系统RO系统可节省更多成本。潮汐能RO系统的最佳进水压力比常规RO系统要高.越耐用的潮汐能RO系统，也越节省产水成本。系统可以节省更多的水的成本。当场地设施成本率低于40%时，潮汐系统RO系统产水的成本开始低于常规RO系统。本文提出的技术方案未来有望成为一种有效的海水淡化选择方案

Abstract：

A reverse osmosis (RO) desalination system coupled with tidal energy is proposed. The mechanical energy produced by the tidal energy through hydraulic turbine is directly used to drive the RO unit. The system performances and the water cost of the conventional and tidal energy RO systems are compared. It is found that the proposed tidal energy RO system can save water cost in the range of 31.0%-41.7% in comparison with the conventional RO system. There is an optimum feed pressure that leads to the lowest water cost. The tidal RO system can save more costs at a high feed pressure or a high water recovery rate. The optimum feed pressure of the tidal energy RO system is higher than that of the conventional RO system. The longer lifetime of the tidal energy RO system can save even more water cost. When the site development cost rate is lower than 40%, the water cost of the tidal energy RO system will be lower than that of the conventional RO system. The proposed technology will be an effective alternative desalination method in the future.

Key words： reverse osmosis (RO) desalination tidal energy model economic evaluation

收稿日期: 2017-01-18 出版日期: 2018-06-04

通讯作者: 张玉文 E-mail: zhangyu@missouri.edu

Corresponding Author(s): Yuwen ZHANG

引用本文:

凌长明, 王逸飞, 闵春华, 张玉文. 潮汐能驱动的反渗透海水淡化系统的经济性评价[J]. Frontiers in Energy, 2018, 12(2): 297-304.
Changming LING, Yifei WANG, Chunhua MIN, Yuwen ZHANG. Economic evaluation of reverse osmosis desalination system coupled with tidal energy. Front. Energy, 2018, 12(2): 297-304.

链接本文:

https://academic.hep.com.cn/fie/CN/10.1007/s11708-017-0478-2
https://academic.hep.com.cn/fie/CN/Y2018/V12/I2/297

Fig.1

Fig.2

Fig.3

Tab.1

Tab.2

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

A	Membrane pure water permeability/(kg·N⁻¹·s⁻¹)
ACC	Annual capital costs/($·a⁻¹)
AEC	Annual energy cost/($·a⁻¹)
AOC	annual operating costs/($·a⁻¹)
B	Membrane salts permeability/(kg·m⁻²·s⁻¹)
C	Salts concentration/( kg·m⁻³)
C_e	Electricity cost/($·kWh⁻¹)
C_m	Membrane cost/($·m⁻²)
C_pw	Unit product water cost/($·m⁻³)
CC	Capital cost/$
DCC	Direct capital cost/$
F	The plant load factor
i	Interest rate/%
ICC	Indirect capital cost/$
N_m	Number of membrane elements in a PV
N_p	Number of pressure vessels in a plant
n	Plant life/a
OC	Operating cost/$
p	Pressure/Pa
p_m	Membrane replacement rate/a⁻¹
Q	Flow rate/(m³·h⁻¹)
R	Universal gas constant/(J·mol⁻¹·K⁻¹)
r	Salts rejection rate/%
S	Membrane surface area/m²
s	Cost saving rate/%
T	Temperature/K
TCC	Total capital cost/$
x	Site developmentcost rate of DCC for tidal energy RO system/%
Greek symbols
$η$	Efficiency/%
$π$	Osmotic pressure/Pa
$ϕ$	Water recovery rate/%
Superscripts
k	Index of membrane element in the pressure vessel
Subscripts
cr	Conventional RO system
enr	Energy
equip	Equipment
f	Feed water
Hpp	High pressure pump
in	Intake and pretreatment
m	Membrane element
max	Maximum value
p	Product water
pd	Pressure device
pw	Product water
site	Site development
Tb	Hydraulic turbine
t	Total
tr	Tidal energy RO system

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