Simultaneous production of high-quality water and electrical power from aqueous feedstock’s and waste heat by high-pressure membrane distillation

2014 ◽  
Vol 55 (10) ◽  
pp. 2766-2776 ◽  
Author(s):  
Norbert Kuipers ◽  
Jan Henk Hanemaaijer ◽  
Hans Brouwer ◽  
Jolanda van Medevoort ◽  
Albert Jansen ◽  
...  
Keyword(s):  
High Pressure ◽  
Waste Heat ◽  
Electrical Power ◽  
Membrane Distillation ◽  
High Quality ◽  
Simultaneous Production ◽  
Quality Water

scholarly journals Water reclamation from shale gas drilling flow-back fluid using a novel forward osmosis–vacuum membrane distillation hybrid system

2014 ◽  
Vol 69 (5) ◽  
pp. 1036-1044 ◽  
Author(s):  
Xue-Mei Li ◽  
Baolong Zhao ◽  
Zhouwei Wang ◽  
Ming Xie ◽  
Jianfeng Song ◽  
...  
Keyword(s):  
Hybrid System ◽  
Shale Gas ◽  
Forward Osmosis ◽  
Membrane Distillation ◽  
Water Recovery ◽  
High Quality ◽  
Gas Drilling ◽  
Vacuum Membrane Distillation ◽  
Quality Water ◽  
Shale Gas Drilling

This study examined the performance of a novel hybrid system of forward osmosis (FO) combined with vacuum membrane distillation (VMD) for reclaiming water from shale gas drilling flow-back fluid (SGDF). In the hybrid FO-VMD system, water permeated through the FO membrane into a draw solution reservoir, and the VMD process was used for draw solute recovery and clean water production. Using a SGDF sample obtained from a drilling site in China, the hybrid system could achieve almost 90% water recovery. Quality of the reclaimed water was comparable to that of bottled water. In the hybrid FO-VMD system, FO functions as a pre-treatment step to remove most contaminants and constituents that may foul or scale the membrane distillation (MD) membrane, whereas MD produces high quality water. It is envisioned that the FO-VMD system can recover high quality water not only from SGDF but also other wastewaters with high salinity and complex compositions.

Analysis of Surface Waste Heat Recovery in IC Engine by Using TEG

2015 ◽  
Vol 787 ◽  
pp. 782-786 ◽  
Author(s):  
R. Prakash ◽  
D. Christopher ◽  
K. Kumarrathinam
Keyword(s):  
Waste Heat ◽  
Electrical Power ◽  
Electrical Energy ◽  
Surface Heat ◽  
Heat Energy ◽  
Ic Engine ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Power Point ◽  
Heat Energy Recovery

The prime objective of this paper is to present the details of a thermoelectric waste heat energy recovery system for automobiles, more specifically, the surface heat available in the silencer. The key is to directly convert the surface heat energy from automotive waste heat to electrical energy using a thermoelectric generator, which is then regulated by a DC–DC Cuk converter to charge a battery using maximum power point tracking. Hence, the electrical power stored in the battery can be maximized. Also the other face of the TEG will remain cold. Hence the skin burn out accidents can be avoided. The experimental results demonstrate that the proposed system can work well under different working conditions, and is promising for automotive industry.

scholarly journals Capturing Waste Heat Energy with Charge-Transfer Organic Thermoelectrics

Synthesis ◽  
2018 ◽  
Vol 50 (19) ◽  
pp. 3833-3842 ◽  
Author(s):  
Vladimir Dimitrov ◽  
Simon Woodward
Keyword(s):  
Waste Heat ◽  
Electrical Power ◽  
Structure Property ◽  
Future Perspectives ◽  
New Materials ◽  
Organic Salts ◽  
Electrically Conducting ◽  
Structure Property Relationships ◽  
Device Applications ◽  
Key Aspects

Electrically conducting organic salts, known for over 60 years, have recently demonstrated new abilities to convert waste heat directly into electrical power via the thermoelectric effect. Multiple opportunities are emerging for new structure–property relationships and for new materials to be obtained through synthetic organic chemistry. This review highlights key aspects of this field, which is complementary to current efforts based on polymeric, nanostructured or inorganic thermoelectric materials and indicates opportunities whereby mainstream organic chemists can contribute.1 What Are Thermoelectrics? And Why Use Them?2 Current Organic and Hybrid Thermoelectrics3 Unique Materials from Tetrathiotetracenes4 Synthesis of Tetrathiotetracenes5 Materials and Device Applications6 Future Perspectives

scholarly journals Demonstration of membrane distillation on textile waste water: assessment of long term performance, membrane cleaning and waste heat integration

2017 ◽  
Vol 3 (3) ◽  
pp. 433-449 ◽  
Author(s):  
Noel Dow ◽  
Jesús Villalobos García ◽  
Leslie Niadoo ◽  
Nicholas Milne ◽  
Jianhua Zhang ◽  
...  
Keyword(s):  
Textile Industry ◽  
Waste Heat ◽  
Membrane Distillation ◽  
Heat Integration ◽  
Membrane Cleaning ◽  
Long Term Performance ◽  
Term Performance ◽  
Textile Waste Water ◽  
Water Assessment

A three month membrane distillation trial demonstrated innovative pretreatments, cleaning and waste heat integration as an inland textile industry wastewater solution.

scholarly journals Entropy Generation of Desalination Powered by Variable Temperature Waste Heat

Entropy ◽  
2015 ◽  
Vol 17 (11) ◽  
pp. 7530-7566 ◽  
Author(s):  
David Warsinger ◽  
Karan Mistry ◽  
Kishor Nayar ◽  
Hyung Chung ◽  
John Lienhard
Keyword(s):  
Entropy Generation ◽  
Waste Heat ◽  
Variable Temperature ◽  
System Size ◽  
Membrane Distillation ◽  
Efficient Technology ◽  
Thermal Desalination ◽  
Vacuum Membrane Distillation ◽  
Organic Rankine Cycles ◽  
Multiple Effect Distillation

Powering desalination by waste heat is often proposed to mitigate energy consumption and environmental impact; however, thorough technology comparisons are lacking in the literature. This work numerically models the efficiency of six representative desalination technologies powered by waste heat at 50, 70, 90, and 120 °C, where applicable. Entropy generation and Second Law efficiency analysis are applied for the systems and their components. The technologies considered are thermal desalination by multistage flash (MSF), multiple effect distillation (MED), multistage vacuum membrane distillation (MSVMD), humidification-dehumidification (HDH), and organic Rankine cycles (ORCs) paired with mechanical technologies of reverse osmosis (RO) and mechanical vapor compression (MVC). The most efficient technology was RO, followed by MED. Performances among MSF, MSVMD, and MVC were similar but the relative performance varied with waste heat temperature or system size. Entropy generation in thermal technologies increases at lower waste heat temperatures largely in the feed or brine portions of the various heat exchangers used. This occurs largely because lower temperatures reduce recovery, increasing the relative flow rates of feed and brine. However, HDH (without extractions) had the reverse trend, only being competitive at lower temperatures. For the mechanical technologies, the energy efficiency only varies with temperature because of the significant losses from the ORC.

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