2025 - Radiran Manufacturing Company Official Website

31AugAugust 31, 2025

Research: Oil Cooler (Copper Fin-and-Tube Coil Heat Exchanger)

Introduction An oil cooler is a device used to reduce the temperature of oil in hydraulic systems, lubricating systems, and gearboxes. One common type is the copper fin-and-tube coil heat exchanger, which is widely used because copper has high thermal conductivity and the fins provide a large heat-transfer surface. Construction and Components Shell and frame: The housing that holds the coil and connections; commonly made of steel or aluminum and designed to resist corrosion and pressure. Coil (copper tubes): Copper tubes through which oil flows (depending...

By پیمان داوریArticles, Technichal Points, TrainingCooler, Fin and Tube, Oil

28AugAugust 28, 2025

Introduction and Importance of Fin-and-Tube Coil Maintenance

Fin-and-tube coils (Fin and Tube Coils) are key components in HVAC systems, chillers, heat exchangers, and various industrial equipment. Maintaining the condition and performance of these heat-transfer assemblies requires adherence to specialized cleaning and maintenance procedures. Specialized Cleaning Procedures 1. Initial Inspection • Use high-resolution borescopes for internal visual inspection. • Assess contamination and corrosion level of aluminum fins. • Examine copper tubes for scale deposition and corrosion. 2. Preparation • Isolate power and gas supply. • Completely drain the working fluid from the system. • Install protective covers...

By پیمان داوریArticles, Technichal Points, Trainingcoil, Fin-and-Tube

26AugAugust 26, 2025

Investigation of Air Flow on Fins of Fin and Tube Coils in Condensers

Introduction

When I think about what makes a condenser truly effective, I always find myself zeroing in on those intricate fin and tube coils. They’re not just passive elements; their performance directly hinges on how air moves around them—especially across the fins. Airflow and heat exchange are tightly linked here, and getting the flow right can make a world of difference in energy savings and system reliability.

The Role of Fins and Tubes

Fin and tube coils are the...

By پیمان داوریArticles, Technichal Points, TrainingCondonsor, Fin, Fin and Tube

15AugAugust 15, 2025

Blue fin condenser coils Vs. Gold fin condenser coils

The coils play a crucial role in the efficiency of an air conditioner. such as which material to use, which condenser coil design to employ, how much these coils cost, how long they last, etc. The longevity of an air conditioner is directly related to the quality of its condenser coils. Its job is to reduce the temperature of the refrigerant as quickly as feasible. Because it is located outside, it is susceptible to deterioration and corrosion from exposure to the...

By پیمان داوریArticles, Technichal Points, TrainingBlue Fin, Fin, Fin Coil, Gold Fin

12AugAugust 12, 2025

Technical Analysis of the Advantages and Limitations of Aluminum as Fins in Fin-and-Tube Coils

Proposed Abstract:This paper presents a comprehensive examination of the reasons for using aluminum as the fin material in fin-and-tube coils. By reviewing thermal properties, heat transfer behavior, thermal conductivity, specific mass (density), corrosion resistance, formability, and manufacturing cost, we show that the combination of these characteristics makes aluminum well suited for HVAC, heating, and refrigeration applications. Additionally, the effects of fin design (fin density, thickness, and geometry), manufacturing processes (stamping, extrusion, and brazing), and performance metrics such as overall thermal...

By پیمان داوریArticles, Technichal Points, TrainingFin, Fin Coil, Limitations of Aluminum

تحلیل و مقایسه تأثیر جریان‌های متقاطع و جریان موازی هم‌جهت و غیر هم‌جهت بر انتقال حرارت و پارامترهای عملکردی در کویل‌های فین‌تیوب

12AugAugust 12, 2025

Analysis and Comparison of the Effects of Crossflow and Parallel Flow (Co-flow and Counter-flow) on Heat Transfer and Performance Parameters in Finned Tube Coils

Finned tube coils are essential components in heating, ventilation, air conditioning (HVAC), and refrigeration systems, where efficient heat transfer between fluids and air is paramount. In these systems, the direction of fluid flow relative to the airflow—typically classified as crossflow, parallel co-flow, or parallel counter-flow—significantly impacts thermal performance and operational parameters. This study aims to analyze and compare the effects of these flow configurations on heat transfer efficiency, pressure drop, and overall coil effectiveness.

Flow Configurations in Finned Tube...

By پیمان داوریArticles, Technichal Points, TrainingCross Flow, Finned Tube Coils, parallel flow

مطالعه مدلسازی جریان سیال و انتقال حرارت در کویل‌های فین آلومینیومی با تیوب مسی در محیط‌های آلوده به ذرات معلق و گرد و غبار

05AugAugust 5, 2025

Modeling Fluid Flow and Heat Transfer in Aluminum Fin Coils with Copper Tubes in Dust-Contaminated Environments

Aluminum finned coils equipped with copper tubes are among the most widely used components in HVAC systems and industrial cooling and heating equipment. These coils combine the favorable properties of aluminum fins and copper tubes, resulting in high thermal efficiency and broad applicability across various environments. However, one of the significant challenges faced especially in industrial and urban environments is contamination of coil surfaces with suspended particles, dust, and airborne pollutants, which can severely degrade heat transfer efficiency and increase...

By پیمان داوریArticles, Technichal Points, TrainingAluminum fins, Copper Tube, Modeling

03AugAugust 3, 2025

Optimization of Aluminum Fin Geometry for Enhancing Cooling Efficiency in Copper Tube Coils

Finned coils composed of aluminum fins and copper tubes are among the most effective and widely used heat transfer systems in HVAC, refrigeration, and industrial heating and cooling applications. In these coils, the high thermal conductivity of copper tubes carrying the cooling or heating fluid combines with the adequate thermal conduction properties of aluminum fins to provide an optimal balance of heat transfer efficiency and corrosion resistance. A critical factor in improving the overall performance of these coils is the...

By پیمان داوریArticles, Technichal Points, TrainingAluminum fins, Copper Tube

27JulJuly 27, 2025

The Impact of Environmental Pollution on the Performance of Water Coils

Introduction Water coils are essential components in heating, cooling, and air conditioning (HVAC) systems. Their main function is to transfer heat between the fluid circulating inside the coil (usually hot or chilled water) and the air passing over the coil’s surface. However, the efficiency of water coils is heavily influenced by several external factors—one of the most critical being environmental pollution. In this article, we explore how various types of environmental pollutants affect the performance, efficiency, and lifespan of

By پیمان داوریArticles, Technichal Points, TrainingEnvironmental Pollution, Water Coils

بهینه‌سازی سیکل تبرید با بهبود عملکرد کندانسور در طراحی و ساخت کندانسور

15JulJuly 15, 2025

Optimization of Refrigeration Cycle by Enhancing Condenser Performance in the Design and Construction of Coil Fin and Tube Condensers

Introduction The condenser is a critical component in the refrigeration cycle, playing a vital role in heat exchange between the refrigerant fluid and the ambient environment. Optimizing condenser performance directly leads to increased system efficiency, reduced energy consumption, and extended equipment life. Particularly for coil fin and tube condensers—widely used in various industries due to their extensive surface area and effective heat transfer characteristics—improving design and operation is paramount. This article examines the key factors and methods affecting condenser performance and...

By پیمان داوریArticles, Technichal Points, TrainingCondenser Function, Condonsor, refrigeration cycle

Yearly Archives - 2025

Introduction

The Role of Fins and Tubes

Flow Configurations in Finned Tube...