2024 - Page 3 of 6 - Radiran Manufacturing Company Official Website

15MayMay 15, 2024

Over designing heat exchangers

Over designing heat exchangers can occur due to several reasons: Safety and Reliability: Engineers often err on the side of caution to ensure that heat exchangers can withstand unexpected variations in operating conditions or transient events without failure. Over designing can provide a safety margin to prevent catastrophic failures, ensuring the reliability and integrity of the system. Uncertainty in Operating Conditions: In many cases, the exact operating conditions of the heat exchanger, such as fluid flow rates, temperatures, and pressures, may be...

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13MayMay 13, 2024

Subcooling and superheating

In refrigeration cycles, subcooling and superheating play important roles in optimizing system efficiency and performance. In fin tube coils, which are common in air conditioning and refrigeration systems, these concepts are particularly relevant. Radiran with over 50 years of experience in manufacturing coils and HVAC equipment, in this essay illustrates the subcool and superheat systems. Subcooling occurs after the refrigerant has undergone condensation but before it enters the expansion valve. During subcooling, any remaining vapor in the refrigerant is condensed...

By پیمان داوریArticles, Technichal Points, TrainingSubcooling, superheatingComments Off

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...

By پیمان داوریArticles, Technichal Points, TrainingFin tube comparison, microchannelComments Off

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...

By پیمان داوریArticles, Technichal Points, Trainingcoil, The steam coilComments Off

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...

By پیمان داوریArticles, Technichal Points, TrainingEvaporatorComments Off

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...

By پیمان داوریArticles, Technichal Points, Trainingcoil, Water CoilsComments Off

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

Yearly Archives - 2024