Parametric analysis of an air-heated humidification-dehumidification (HDH) desalination system with waste heat recovery

Abstract Industrial waste heat is effective to provide power for the desalination system to acquire distilled water. In this paper, exhaust gas is drawn into the plate heat exchangers (PHEs) to heat the circulated humid air within the humidification dehumidification (HDH) desalination unit. Based on the governing equations of the components and the fixed-effectiveness model, key parameters are prescribed to accomplish the performance analysis of the HDH desalination system, and the relevant recovery results of the waste heat are also attained. The simulation results present that the balance condition of the dehumidifier is inaccessible due to a negative specific entropy generation of the dehumidifier in spite of the obtained best performance at such point. It is summarized that high values of the component effectiveness and the initial temperature as well as the vacuum environment are beneficial to raise the performance of the desalination system and reduce the heat transfer surface area for the PHEs. Moreover, the elevation of the top temperature contributes to a slight elevation of the gained-output-ratio (GOR), while the relevant heat transfer surface area of the PHEs increases.

[1]  Amin Behzadmehr,et al.  Analysis of a solar desalination unit with humidification–dehumidification cycle using DoE method , 2011 .

[2]  M. Bazilian,et al.  Desalination using renewable energy sources on the arid islands of South Aegean Sea , 2016 .

[3]  Syed M. Zubair,et al.  Exergetic analysis of a brackish water reverse osmosis desalination unit with various energy recovery systems , 2015 .

[4]  John H. Lienhard,et al.  Effect of entropy generation on the performance of humidification-dehumidification desalination cycles , 2010 .

[5]  He Weifeng,et al.  Thermodynamic investigation of waste heat driven desalination unit based on humidification dehumidification (HDH) processes , 2016 .

[6]  Ronan K. McGovern,et al.  Performance limits of zero and single extraction humidification-dehumidification desalination systems , 2012 .

[7]  Swellam W. Sharshir,et al.  Mathematical and experimental investigation of a solar humidification–dehumidification desalination unit , 2015 .

[8]  A.M.I. Mohamed,et al.  Humidification–dehumidification desalination system driven by geothermal energy , 2009 .

[9]  A. E. Kabeel,et al.  Experimental study of a humidification-dehumidification solar technique by natural and forced air circulation , 2014 .

[10]  J. Lienhard,et al.  Erratum to Thermophysical properties of seawater: A review of existing correlations and data , 2010 .

[11]  He Weifeng,et al.  Performance analysis of an air-heated humidification–dehumidification desalination plant powered by low grade waste heat , 2016 .

[12]  Chunhua Qi,et al.  Performance study of a pilot-scale low-temperature multi-effect desalination plant , 2014 .

[13]  Fahad A. Al-Sulaiman,et al.  Humidification dehumidification desalination system using parabolic trough solar air collector , 2015 .

[14]  İsmail Solmuş,et al.  A parametric study on a humidification–dehumidification (HDH) desalination unit powered by solar air and water heaters☆ , 2014 .

[15]  R. M. Manglik,et al.  Experimental Study of Turbulent Flow Heat Transfer and Pressure Drop in a Plate Heat Exchanger With Chevron Plates , 1999 .

[16]  Massimiliano Renzi,et al.  Design and test of a single effect thermal desalination plant using waste heat from m-CHP units , 2015 .

[17]  Nabil A.S. Elminshawy,et al.  Experimental and analytical study on productivity augmentation of a novel solar humidification–dehumidification (HDH) system , 2015 .

[18]  John H. Lienhard,et al.  The potential of solar-driven humidification–dehumidification desalination for small-scale decentralized water production , 2009 .

[19]  Gamal I. Sultan,et al.  Development of a desalination system driven by solar energy and low grade waste heat , 2015 .

[20]  Arvind Chari.  A global strategy for the deployment of humidification-dehumidification technology , 2011 .

[21]  John H. Lienhard,et al.  ENERGY EFFECTIVENESS OF SIMULTANEOUS HEAT AND MASS EXCHANGE DEVICES , 2010 .

[22]  John H. Lienhard,et al.  Entropy generation minimization of combined heat and mass transfer devices , 2010 .

[23]  John H. Lienhard,et al.  Thermodynamic analysis of humidification dehumidification desalination cycles , 2009 .