Monthly Archives - June 2025

شیرهای سرویس سیستم‌های تبرید Service Valves in Refrigeration Systems
30Jun

Service Valves in Refrigeration Systems

systems and explains the role of each in the proper functioning of the system: Hand Valve: Hand valves are used for manual control of refrigerant flow in the piping lines. They allow manual opening or closing of the flow and are used during system maintenance and repair. Suction Service Valve: These valves are located on the suction line of the compressor and are used to facilitate servicing and repairs. Discharge Service Valve: Discharge service valves are placed on the compressor discharge line and, similar to suction...

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دستگاه زنت
11Jun

Zent

The Zent air conditioning unit is an innovative HVAC system designed to provide comfortable indoor air conditions under varying climatic scenarios. Utilizing evaporative cooling through a cellulose pad in the summer and a finned-tube hot water coil for winter heating, this device efficiently meets both cooling and heating demands with low energy consumption. Structure and Function of the Cellulose Pad in Summer Cooling One of the key components of the Zent unit is the cellulose pad, which serves as the core of...

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پروسه اسیدشویی کندانسور پوسته‌لوله با تیوب‌های مسی و پوسته کربن استیل در چیلرهای آب‌خنک تراکمی
01Jun

Acid Cleaning Process for Shell-and-Tube Condensers with Copper Tubes and Carbon Steel Shells in Water-Cooled Reciprocating Chillers

Introduction Shell-and-tube condensers play a critical role in heat exchange and refrigerant condensation in water-cooled reciprocating chillers. Typically, their tubes are made of copper and the shell is made of carbon steel. Over time, deposits, corrosion products, and sludge accumulate inside the tubes, reducing heat transfer efficiency. Acid cleaning is an effective method to remove these fouling materials and restore performance. This article outlines a complete and technical step-by-step procedure for acid cleaning such condensers. Materials and Equipment Required Suitable acid (commonly diluted...

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