Screw chiller refrigeration system with economizer has a throttle valve and two throttle two forms for a throttle system, refrigerant liquid from the liquid storage device is divided into two parts, the inner coil 5 through a main road from the economizer, heat and cold, and then through the throttle valve 8 after throttling, entering the evaporator 6 in refrigeration; another way through the throttle valve pressure after entering the economic unit 5 endothermic and flash gases, through air body screw compressor into the mouth, is in the initial stage of the basic volume of compressed gas from the evaporator, and continue to be mixed compression.
     For the refrigeration system of screw chillers two throttle, refrigerant liquid from the liquid storage device 4, through the throttle valve 7 to the economizer 5, the upper the flash gas compressor through the air into the mouth of the element volume in the compression stage, and the original gas continue to be compressed; the lower part of the liquid through the throttle valve 8 second times after throttling, enters the evaporator in refrigeration. The refrigerant liquid entering the evaporator is the same as the gas temperature entering the air outlet after two throttling and the two throttling.
       Whether it is a throttle form, or the two throttle form, is to allow the refrigerant into the evaporator is too cold, and ultimately increase the cooling capacity. At the same time, the air quality of the unit volume is increased and the compression work is increased, but the increase efficiency is slower than that of the refrigeration capacity.
For screw chiller with an economizer, refrigeration compressor operating range of its wide, single stage pressure ratio, when the unloading operation can achieve optimum operation and basic processing with single stage screw refrigeration compressor, refrigeration system valves and equipment increase, so the screw chillers suitable for various industries use.
        For more information please contact us: Mr. Wang 13923464030 Tel: 0755-81715045 or visit our website: http://www.szdxj.com