Enhancing of solar still productivity using vacuum technology

In this study the effect of applying vacuum inside the solar still on its productivity is presented. The effect of vacuum inside the still is to avoid any heat transfer due to the convection in the still. So the heat loss from the water in an insulated still is due to the evaporation and radiation o...

Full description

Saved in:
Bibliographic Details
Published inRenewable energy Vol. 5; no. 1; pp. 532 - 536
Main Authors Al-Hussaini, H., Smith, I.K.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Oxford Elsevier Ltd 01.08.1994
Elsevier Science
Subjects
Applied sciences
Energy
Equipments, installations and applications
Exact sciences and technology
Natural energy
Solar energy
Solar thermal conversion
Productivity
Experimental result
Process improvement
High efficiency
Vacuum technique
Solar energy
Heat loss
Solar distillation
Convection
Online AccessGet full text

Cover

More Information
Summary:In this study the effect of applying vacuum inside the solar still on its productivity is presented. The effect of vacuum inside the still is to avoid any heat transfer due to the convection in the still. So the heat loss from the water in an insulated still is due to the evaporation and radiation only. Hence, the air mass transfer is not included in the analysis. In presence of vacuum the effect of the non-condensable gas which reduces the rate of condensation is also avoided. The results show that applying vacuum inside the solar still increases the water productivity about 100%, i.e. enhancing the efficiency about 100%. This can be considered as the maximum increase in the productivity of the still up to now.
ISSN:0960-1481
1879-0682
DOI:10.1016/0960-1481(94)90430-8