In this paper water vapor is directly generate in a short circuit by means of a compound parabolic trough
concentrator (CPC) while optimizing the manufacturing costs of the solar device used. Direct steam generation has been widely studied, especially for high power systems. However, experimental applications for small solar field areas are rare, especially for concentrating solar technology. This research shows that it is possible to produce water vapor with a CPC for cooking, dry cleaning, maintenance and cleaning, etc. The different heat exchanges that took place in each compartment of the CPC were described. The heat transfer equations were solved by the Gauss-Seidel’s method. An advanced difference scheme is used for the storage terms and a decentered scheme for the transport terms. The numerical simulation has been implemented by matlab code. The different CPC parameters have been directly measure experimentally. The results show that for a CPC length Lc=1 meter and width lc=50 centimeter, the theoretical temperatures of the water and the absorber can reach 125°C and 150°C respectively, while the experimental temperatures of the water and the absorber are 108°C and 112°C respectively. The temperature of the water vapor measured can reach 110°C. The mass of water vapor produced with this device is 0.110 Kg with a mass flow rate of 3x10-6 Kg/s and a saturating vapor pressure of 1.05 bar. The theoretical thermal efficiency reached is
52% against an experimental value of 35% for a global solar radiation of 950 W/m2 and an ambient temperature of 43°C at solar noon in April 2021. The CPC is designed to operate only during the day, and we are planning to add a heat storage system to our CPC for night use of the steam produced. In addition, instead of water, we can test the CPC's operation in the future with vegetable oils such as moringa oil.

CPC Water Vapor Mass Mass Flow Rate Temperature