A large amount of the energy produced is used for heating and cooling application. Many studies at the present time are looking for ways to reduce this consumption or use a renewable energy source to reduce dependence on fossil fuel energy. In this research, the used of solar energy to power a hybrid adsorption ice-maker, a linear Fresnel solar concentrator type, with a total area of 5 m2, is used for this purpose The concentrator was designed, built and conducting an experimental study in Baghdad (latitude 33.33 and longitude 44.14) for the solar system that which is consisting of the concentrator with a double absorber type evacuated tube has been used, tank, pump and accessories to investigate the performance of the system and the effect of the water flow on the unit performance. The performance of the adsorption system is studied theoretically. The adsorption system works with the activated carbonmethanol pair the mass of activated carbon is 0.5 and while the mass of methanol is 1.6 kg. The experimental work was achieved at July 2019 and the results showed that the maximum temperature of the water inside the tank obtained was 95 °C when the rate of water flow through the collector loop was 0.5 kg/min and that the maximum thermal efficiency was about 40% at the same flow amount. The theoretical results showed that the best coefficient of performance for the adsorption refrigeration system was 0.43 at the generator temperature of 95 °C and the condensing temperature of 30 °C.

Chemical method has been used to prepare cadmium sulphide films by using cadmium chloride (CdCl), Amonia (NH 3 ) and thiourea (CSNH 2 ). The effect of the temperature of preparing solution over the range of (40-80 o C) have been studied, it show that increasing of the solution temperature will increase the reaction speed and change the film color to more orange side. The optical properties over the wavelength range (400-٧00)nm were recorded before and after annealing of prepared film at 300 o C for 30 mint, so the calculated energy gap was about (2ev).