Development of Seawater Distiller utilizing Waste Heat of Portable Electric Generators

Low-Cost Multi-Effect Solar Still: Alternative Appropriate Technology for Personal Desalination

“…Therefore, substantial improvement of productivity should be made on solar still for more practical applications. Multi-effect solar still (MES) was developed to overcome this low productivity problem, by recycling wasted latent heat repeatedly [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. As shown in Figure 1, in MES, multiple layers of evaporating wicks and condensing surface are stacked together [14].…”

“…However, water droplet may flow back to wick along the spacer if too much spacers were applied, which may reduce productivity. The layers were placed vertically to avoid gravitational deformation [8][9][10][11][12][13]. However, it may increase discrepancy between solar incident angle to the system window, which reduces solar energy usage.…”

“…However, it may increase discrepancy between solar incident angle to the system window, which reduces solar energy usage. Reflecting mirrors [12,24] or tilted window [8,9,13,27] could be placed in front of the vertical layers to maximize solar intensity. However, it may increase the system cost.…”

Parametric performance test of distiller utilizing solar and waste heat

“…There are still many regions worldwide which do not have water and electricity infrastructure. In such places, like remote areas, islands and developing countries, a large-scale desalination plant is not appropriate due to high initial construction cost, operation and maintenance cost, and/or skills [3]. Undeveloped regions without an electricity grid uses electric generators of small (portable) or medium capacity, and demand a small amount of fresh water, generally less than 200 m 3 /d.…”