Yearly Archives - 2024

Refrigerant Replacement Table
21Nov

Refrigerant Replacement Table

<p> The refrigerant replacement table is a key tool for professionals in the HVAC and refrigeration industry. This table helps experts identify old refrigerants and select more environmentally friendly alternatives. Typically, these tables provide important information, including the type of old refrigerant, the replacement refrigerant, and key characteristics pertaining to both. Reasons for Using the Refrigerant Replacement Table Environmental Issues Many old refrigerants, such as CFCs and HCFCs, are gradually being phased out due to their harmful effects on the ozone layer and their...

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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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Sight galss سایت گلس
07Nov

Sight Glass

Definition of Sight Glass A sight glass is a transparent tube that allows users to observe the fluid flowing through it. This device is used for analyzing conditions in industrial equipment and chemical reactors. Materials and Features Sight glasses are usually made of very durable glass that does not get damaged under specific conditions. The glass is strengthened through a thermal process, and an additional protective coating is applied to guard against chemical substances. These features make the glass resistant to stress, reducing the likelihood...

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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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شیر انبساط Expansion Valve
30Oct

Expansion Valve

Radairan Company is one of the pioneers in the field of equipment and HVAC systems, engaged in the examination and production of diverse products in this area. In equipment that operates based on the refrigeration cycle, important processes take place, each performed by specific components such as evaporators, condensers, compressors, or expansion valves. One of these key processes, as mentioned, is carried out by the expansion valve, which is the topic of this article. Stay with us at Radairan Company  to...

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Accumulator Heat Exchanger آکومولاتور هیت اکسچنجر
29Oct

Accumulator Heat Exchanger in Chillers

Radiran Company, through extensive research and effort in the field of refrigeration systems, has identified the significance of accumulators equipped with heat exchangers. These accumulators play a vital role in chiller units. By directing the liquid refrigerant to the heat exchanger of the accumulator, there is a considerable increase in the efficiency of the refrigeration cycle. This process not only moves the liquid refrigerant to the subcooling area but also provides the necessary heat for its evaporation. The result of...

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آکومولاتور
22Oct

What is an accumulator

The use of certain components and equipment is often aimed at enhancing system efficiency, and there is not always an immediate necessity for their application. However, experience has shown that integrating some of these tools can be significantly effective in improving the performance and productivity of the system. Over time, these components become essential elements of the overall system. One such critical component is the accumulator. Accumulators offer many advantages and are typically used in systems that operate based on the...

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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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Psychrometric
06Aug

Psychrometric Chart and Air Characteristics

A psychrometric chart presents physical and thermal properties of moist air in a graphical form. It can be very helpful in troubleshooting and finding solutions to greenhouse or livestock building environmental problems. Understanding psychrometric charts can help you visualize environmental control concepts, such as why heated air can hold more moisture or, conversely, how allowing moist air to cool will result in condensation. This article explains how characteristics of moist air are used in a psychrometric chart. Three examples are...

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