بایگانی‌ها Technichal Points

11MayMay 11, 2024

Fin tube and microchannel coils comparison

Fin tube coils and microchannel coils are two common types of heat exchangers used in various applications, each with its own set of advantages and disadvantages. In this essay, we will compare these two types with each other from different aspects. Fin tube coils have been a staple in heat exchanger design for decades, and for good reason. One of the primary advantages of fin tube coils is their robustness and durability. This durability makes fin tube coils well-suited for demanding...

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08MayMay 8, 2024

Inner Grooved copper Tubes

Inner Grooved copper Tubes are utilized within HVAC, refrigeration, and thermal industries to enhance thermal conductivity. These pipes feature a rotary groove inner surface, augmenting heat transfer efficiency through increased effective surface area and inducing a vortex flow in the cooling fluid, ensuring uniform distribution within the tube's inner space. With a thermal conductivity coefficient 1.8 to 2 times higher than plain pipes, they significantly boost heat transfer efficiency. Primarily employed in refrigeration and heating industries, these pipes address the...

By پیمان داوریArticles, Technichal Points, TrainingCopper Tubes, Inner Grooved copper TubesComments Off

08MayMay 8, 2024

The use of coils in air conditioners

The AHU coil functions to heat or cool the environment using air conditioners. Industrial AHU coils produce either cool or hot air by passing air over their fins. Radiran Manufacturing Company manufactures and designs various types of industrial coils and air conditioners required for air conditioning, providing them to valued customers with the highest quality and durability. The AHU coil acts as a heat transfer exchanger, facilitating heat exchange between outside air and the refrigerant inside the copper coil tube....

By پیمان داوریArticles, Technichal Points, TrainingAHU coil, Air ConditionersComments Off

07MayMay 7, 2024

The steam coil

The steam coil is a simple yet effective device used to circulate steam in a closed loop through coils. Inside these coils, the fluid typically consists of hot saturated steam, which emits a significant amount of heat into its surroundings. While the primary function of the heat exchanger is to regulate temperature in various environments, it also finds applications in industrial settings, such as the food industry, and is an economical solution for heating large spaces. Radiran Coil Manufacturing Company, based...

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29AprApril 29, 2024

Why Air-cooled chiller

The key difference between air-cooled and water-cooled chillers lies in how they handle condensation. Air-cooled chillers use air to cool the refrigerant, while water-cooled ones rely on a cooling tower and water. In air-cooled chillers, air passing over fin tube coils cools the refrigerant, while water-cooled chillers use water from cooling towers to cool the refrigerant through evaporation. However, this process results in a significant amount of water wastage, which poses economic and environmental challenges, especially in regions like Iran...

By پیمان داوریArticles, Technichal Points, TrainingAir-cooled chiller, chillerComments Off

26AprApril 26, 2024

What is an evaporator

An evaporator is a type of heat exchanger wherein a liquid fluid, acting as a refrigerant, enters the tubes (fin tube coil). Due to the low pressure of the liquid, it absorbs heat from the fluid surrounding the tubes (such as air or water), causing it to boil, evaporate, and transition from liquid to gas, extracting heat from the environment and cooling it. This process earns the device its name. The performance of an evaporator depends on factors such as...

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22AprApril 22, 2024

Water Coils

A water coil is a vital component in air conditioning, heating, and cooling systems across industries like construction and manufacturing. It's named for its use of water as a fluid within its tubing. Water is commonly employed to regulate temperatures in industrial settings and other environments due to its high heat capacity. Water coils facilitate heat transfer from this liquid to the surrounding environment or equipment. They work by circulating water of a specific temperature through tubes while...

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27JanJanuary 27, 2024

The dew point and the Bubble point

The dew point on fins in fin tube coils refers to the temperature at which air becomes saturated with moisture, leading to condensation on the fins. In the context of HVAC systems, when the air passing over the fin tube coils cools down to the dew point, water vapor in the air condenses into liquid water on the coil fins. This condensation can impact the efficiency of heat exchange and may lead to issues like corrosion or microbial growth if...

By پیمان داوریArticles, Technichal Points, TrainingBubble point, dew pointComments Off

27JanJanuary 27, 2024

Addressing vibrations and mechanical stresses

Addressing vibrations and mechanical stresses in condensing and evaporating units is crucial to ensure the longevity and reliability of the systems. Here are some strategies to tackle these issues: Proper Mounting and Installation: Ensure that the condensing and evaporating units are correctly mounted and installed. Secure the units on a solid foundation or vibration isolators to minimize the transmission of vibrations to the surrounding structure. Balancing Components: Ensure that all rotating components, such as fans and compressors, are properly balanced. Imbalances can...

By پیمان داوریArticles, Technichal Points, Trainingmechanical stresses, vibrationsComments Off

27JanJanuary 27, 2024

Receivers in condensing units

Receivers in condensing units are essential components that play a critical role in the operation of refrigeration systems. A receiver serves as a storage vessel for liquid refrigerant, typically positioned between the condenser and the expansion valve in the system. Its primary function is to ensure a stable and controlled supply of liquid refrigerant to the evaporator. During the refrigeration cycle, the refrigerant gas is condensed into a high-pressure liquid in the condenser. The receiver acts as a reservoir for this...

By پیمان داوریArticles, Technichal Points, TrainingCondonsor, ReceiversComments Off