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11DecDecember 11, 2024

Types of Condensers

Main Concept: Condensers operate based on the principles of heat transfer, which involves the movement of heat from warmer environments to cooler ones. The functioning of a condenser involves three basic phases: Phase One: Desuperheating In this phase, the highly heated and pressurized refrigerant vapor entering the condenser first loses its heat. This process aids in the initial cooling of the refrigerant. Phase Two: Condensation Once sufficient heat has been removed from the refrigerant vapor, the condensation process begins. In this...

By پیمان داوریArticles, Technichal Points, TrainingAir-cooled Condensers, Direct-contact Condensers, Evaporative Condensers, Water-cooled Condensers

08DecDecember 8, 2024

Differences Between Refrigerants R22 and R410

Refrigerants R22 and R410 are two types of gases commonly used in air conditioning systems. These two gases are compared due to their different characteristics and environmental impacts. Below, we will examine the key differences between these two gases.

1. Environmental Status

R22: It is a hydrochlorofluorocarbon (HCFC) that harms the ozone layer. For this reason, its production and use have been banned in many countries. R410: It is a hydrofluorocarbon (HFC) introduced as a more environmentally friendly alternative to R22 and has...

By پیمان داوریArticles, Technichal Points, TrainingR22, R410, Refrigerant gases

03DecDecember 3, 2024

How to clean or replace fan coil units

Cleaning and replacing fan coils are essential maintenance tasks that help ensure the efficiency and effectiveness of heating and cooling systems. Below are the steps and key tips for cleaning or replacing coils: 1. Required Equipment • Gloves and mask: To prevent contact with contaminants. • Soft brush or special brush: For removing dust. • Dust blower or compressed air: To blow dust out from between the fins. • Cleaning solution: For washing and cleaning the coils. • Dustpan: To collect debris. • Vacuum cleaner: If needed,...

By پیمان داوریArticles, Technichal Points, Trainingcoil, Fan Coils

01DecDecember 1, 2024

Chiller Tonnage A Guide to Selecting the Appropriate Tonnage for Various Projects

Choosing a chiller with the wrong tonnage can have serious consequences, including inadequate cooling and resident dissatisfaction, significant increases in energy consumption and monthly expenses, reduced lifespan of the equipment, and problems with chiller maintenance, which can lead to premature device failure. Therefore, selecting a chiller with the appropriate tonnage for each project is crucial. In this section, we will examine the factors that influence chiller tonnage selection and the methods for calculating it. Factors Influencing Chiller Tonnage Selection 1. Thermal Load...

By پیمان داوریArticles, Technichal Points, Trainingchiller, Chiller Evaporators, Chiller Tonnage

26NovNovember 26, 2024

Key Points for Maintaining Chiller Evaporators

1. Installation of Strainer in the Water Inlet to the Chiller Evaporator Installing a strainer in the water inlet to the chiller evaporator is essential and offers numerous benefits: • Prevention of Suspended Particle Ingress: The chiller evaporator, being a sensitive component of the heat exchange system, is susceptible to damage from particles like sand, rust, and debris. These particles can reduce heat transfer efficiency and cause blockages in the system. • Difficulty in Cleaning After Contamination: Once contaminants enter, cleaning the evaporator can be...

By پیمان داوریArticles, Technichal Points, Trainingchiller, Chiller Evaporators, Evaporator, Maintaining

21NovNovember 21, 2024

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...

By پیمان داوریArticles, Technichal Points, TrainingCFC, Global Warming Potential, HCFC, R-12, R-134a, R-22, R-32, R-407C, R-410A, Refrigerant gases

13NovNovember 13, 2024

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...

By administratorArticles, Technichal Points, TrainingScrew Compressor

10NovNovember 10, 2024

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...

By administratorArticles, Technichal Points, TrainingFilter Dryer

07NovNovember 7, 2024

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...

By پیمان داوریArticles, Technichal Points, TrainingSight Glass

04NovNovember 4, 2024

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...

By administratorArticles, Technichal Points, TrainingAccumulator, chiller, Heat Exchanger