Abstract:
In this article, a single-circuit solar water heater with a thermosiphon was built, tested and
numerically modeled in Kazakhstan, Almaty. To heat cold water in the south-eastern region of Kazakhstan, a
flat solar collector was developed and studied, as well as a mathematical model of a single-circuit solar
installation with a thermosiphon. In this mathematical model, the Bernoulli equation was used to solve the
water flow in the dispenser tank and in the collector itself. Numerical modeling in MatLab was developed using
a mathematical model. The dependences of the temperature inside the solar collector, which is usually
distributed inside the collector in accordance with the law of thermodynamics, were obtained, and the
maximum relative humidity, which was 75%, was also solved. In the course of the study, the annual change in
the efficiency of the system was decided.
