Production of vegetables for fresh consumption in arid regions is usually done in greenhouses fitted with evaporative cooling, which strains the scarce water resource in those areas so much that [lack of] water frequently becomes the limiting factor.
Greenhouses fit with sufficient mechanical cooling capacity (closed/semi-closed greenhouses) not only dispose of the need for evaporative cooling, but also allow for recovery of the water transpired by the crop as condense on the mechanical cooling and dehumidification system. However, such a greenhouse is much more energy demanding in comparison to an evaporatively cooled greenhouse.