Desalination at low temperatures and low pressures

被引：72

作者：

Gude, Veera Gnaneswar ^{[2
]}

Nirmalakhandan, Nagamany ^{[1
]}

机构：

[1] New Mexico State Univ, Dept Civil Engn, Las Cruces, NM 88003 USA

[2] Cascade Eco Solut Inc, Bothell, WA 98021 USA

来源：

DESALINATION | 2009年 / 244卷 / 1-3期

关键词：

Low temperature; Low pressure desalination; Utilization of waste heat; Prototype scale demonstration; HEAT;

D O I：

10.1016/j.desal.2008.06.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A low-temperature phase-change desalination process configuration is presented in this study. This configuration enables saline water to be evaporated at near-ambient temperatures under near-vacuum level pressures created by the barometric head without any mechanical energy input. Thermodynamic advantages and benefits of low-temperature phase-change desalination are discussed and results from a prototype test system are presented to demonstrate the feasibility of the proposed configuration. Results of this study show that a freshwater production rate of 0.25 kg/h (6 L/d) can be sustained at evaporation temperatures as low as 40 degrees C. These results suggest that this process has the potential to be driven by low-grade heat sources such as waste process heat or solar collectors at temperatures as low as 50 degrees C.

引用

页码：239 / 247

页数：9