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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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وظیفه قطره‌گیرها در برج خنک‌کن
21May

The Role of Drift Eliminators in Cooling Towers

Reducing the Amount of Water Droplets Carried with the Exhaust Air (Drift Reduction) The primary function of drift eliminators is to prevent small water droplets from escaping the cooling tower along with the airflow. Water droplets suspended in the air stream (drift) can cause environmental problems (pollution of surrounding soil and water) and water loss in the system. Drift eliminators collect and separate these droplets, minimizing water loss. Environmental Protection and Water Conservation By reducing the amount of suspended...

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Everything you need to know about refrigeration evaporators
15Apr

Everything you need to know about refrigeration evaporators Part 1

Refrigeration evaporators play a fundamental role in any refrigeration or freezing system, whether incorporated in a compact system or as a stand-alone unit. But do you really know what an evaporator is or how it works? What is a refrigeration evaporator and what is it used for? In refrigeration, an evaporator is the heat exchanger where the refrigerant circulating inside the refrigeration circuit absorbs the thermal energy from the environment, which is then cooled. This is how the state of the refrigerant...

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unit heater یونیت هیتر
14Feb

What is a Unit Heater

What is a Unit Heater? • A unit heater is a heating device used to warm specific spaces such as garages, workshops, or warehouses. • These heaters are especially useful in locations where traditional heating systems may not reach, or where their implementation is not practical. Features and Applications • Price of Unit Heaters: The price of unit heaters varies depending on the type, size, and capabilities of the device. • Structure and Function: This device is a small box that contains a heating system...

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تعریف سابکولینگ و سوپرهیت Subcooling and Super heat Definition
05Jan

Subcooling and Superheating Definition

Definition of Subcooling Subcooling refers to a liquid whose temperature is lower than its saturation point. Process of Subcooling Subcooling and condensation occur in the condenser. The use of subcooling is for transferring refrigerant from the condenser to the thermostatic expansion valve in liquid form. Mechanism of Refrigeration Systems The refrigerant absorbs heat and releases it to the environment after leaving the compressor and reaching the condenser. The temperature decreases in the condenser, and the refrigerant transitions to the liquid phase. Advantages of Subcooling Increased...

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Screw Compressor
13Nov

Screw Compressor: Working Principles and Operation

Introduction to Screw Compressors A screw compressor is a type of rotary compressor made up of two helical rotors: a male rotor and a female rotor. These rotors are designed to rotate around each other and compress gas. One of the rotors is connected to the main motor, while the other rotors move due to the first rotor's rotation. This process reduces the volume of gas in the rotor's grooves, resulting in compression. Structure and Design of the Rotors The screw compressor consists...

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فیلتر درایر Filter dryer
10Nov

Filter Dryer: Introduction, Importance, and Function

1. What is a Filter Dryer? A filter dryer is a crucial component in refrigeration and air conditioning systems, typically installed in devices such as chillers, air conditioners, and refrigerators. Its primary role is to prevent the ingress of impurities and moisture into the refrigeration cycle. 2. The Necessity of Using a Filter Dryer Given that there is a possibility of moisture and impurities entering the system during the design and implementation phases, a filter dryer serves as a preventive element. In smaller...

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شیر انبساط Expansion Valve
04Nov

The Importance of Expansion Valve in Refrigeration and Cooling Systems

The Importance of Expansion Valve in Refrigeration and Cooling Systems The expansion valve serves as a key component in refrigeration and cooling systems, playing a crucial role in optimizing system performance, controlling precise temperature and pressure, and ensuring energy efficiency. These valves regulate the flow of refrigerant to the evaporator, enabling maximum efficiency of the system. Types of Expansion Valves Expansion valves can be categorized into different types, each designed for specific applications. The most common types include: 1. Thermostatic Expansion Valves (TEV): These valves...

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Psychrometric
13Aug

A detailed explanation of the psychrometric chart and the properties of air – Part II

The chart shows other important moist air properties as diagrammed in Figure 2: wet-bulb temperature; enthalpy; dewpoint or saturation temperature; relative humidity; and specific volume. See the Definitions section for an explanation of these terms. Moist air can be described by finding the intersection of any two of these properties. This is called a "state point." From the state point all the other properties can be read. The key is to determine which interest. Some practice with examples will help....

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COLLECTOR FLOW
20Jan

Flow Collector

The water flow in a heat exchanger coil, often referred to as the collector, depends on various factors such as the heat exchanger design, system requirements, and fluid dynamics. Typically, engineers specify a certain flow rate to optimize heat transfer efficiency. High flow rates can enhance heat transfer but may require more energy for pumping. Conversely, lower flow rates may be more energy-efficient but might result in reduced heat transfer. It's essential to consider the specific application and design parameters...

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