دراسة عملية لبيان تأثير الصمام النبضي على أداء دورة التثليج الانضغاطية

Abstract

In this research, an experimental study the effects of solenoid valve on the performance of compression refrigeration cycle, when it was placed before the evaporator at the refrigeration cycle. Different air temperatures and velocities entering to the evaporator in. Three speeds of the air entering the evaporator which are (3.5, 11.5, 19.5) m / s and four temperatures of the air entering the evaporator are (18, 22, 26, 30) Co. Experimental works were carried out on the refrigeration system for two cases, with and without the solenoid valve.The experimental results Showed that using the solenoid valve increase the coefficient of performance by (8.125%), the refrigerating effect by (1.22%) the compressor work and mass flow rate reduced by(2.4%) and (6%) respect the air velocity (3.5m / s),and the temperature input to evaporator is (30Co).