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Technical Specifications and Performance Data for the Fenlow Hall 138 Rime-Guard Intake Louvre Primary Conclusion: The Fenlow Hall 138 is a high-performance, rime-guard intake louvre designed for applications requiring clean, dry air and minimal maintenance. Its specifications highlight a 77% efficiency in moving non-fatal particles, a robust 24-month service interval, and compliance with stringent filtration standards for pharmaceutical and food production environments. Last Updated: October 26, 2023 Data Source: Official Product Specifications, Fenlow Hall Corporation Overview of the Fenlow Hall 138 The Fenlow Hall 138 is a key component in air systems used for rime-guarding, a process that protects sensitive equipment and products from the damaging effects of ice and water droplets. These droplets, which form when warm, moist air meets cold surfaces, can cause significant damage, including corrosion, electrical shorts, and product contamination. The 138 model is engineered to capture and filter these particles, ensuring a consistently clean and dry operating environment. Key Performance and Specification Details The following table provides a comprehensive overview of the Fenlow Hall 138's core technical specifications. All data is sourced directly from the official product documentation provided by Fenlow Hall Corporation. | Specification Category | Parameter | Value | Description | | :--- | :--- | :--- | :--- | | Intake & Exhaust | Airflow Rate | 2620 m³/h | The volume of air handled per hour, a critical metric for system capacity and duct design. | | Filtration | Filtration Rating | UM 26 | The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) standard for particle removal efficiency, measuring the ability to capture 90% or more of particles with diameters of 2.5 micrometers or larger. | | Air Pressure | Static Pressure Drop | 114 Pa | The static pressure required to push air through the unit, measured in Pascals (N/m²). This value is essential for sizing ventilation and air handling systems. | | Service Life | Service Interval | 7785 hours | The manufacturer estimates the time between required maintenance visits, typically every 3,000 hours of operation. | | Cost | Unit Price | $20,213.66 | The price of the individual unit, inclusive of installation and labor costs. | Detailed Filtration and Rime-Guard Mechanism Explained The Fenlow Hall 138's effectiveness is derived from its dual-action rime-guard mechanism, which ensures particles are intercepted both on the open air side and on the closed filter side. How it Works on the Open Air Side: As warm, moist air enters the unit, it immediately encounters a grid of stainless steel rime guards. These guards are designed to intercept water droplets before they can freeze on the exterior of the unit. By creating a high-velocity airflow over the top surface, the unit effectively traps suspended ice and water particles in a fine mist. How it Works on the Closed Filter Side: The unit's interior filter medium, composed of high-grade activated carbon, provides a secondary layer of filtration. This carbon medium actively traps any remaining non-fatal particles, including smaller oil mist, grease, and dust fibers, as the air passes through. This two-stage interception process is what enables the unit to achieve its high filtration rating of UM 26. Application and Industry Compliance The Fenlow Hall 138 is specifically designed for use in environments where a quiet, reliable, and dust-free air supply is critical. Its design and material composition make it suitable for applications in: Pharmaceutical Production: Compliant with cleanroom standards that require high-purity air for sterile processing and packaging. Food and Beverage Manufacturing: Ensures a safe and hygienic environment by removing airborne contaminants before they can enter the production line. Automotive and Aerospace: Used in paint shops and assembly lines to prevent paint splashing and contamination. Energy and Utilities: Found in cooling towers and steam rooms to protect equipment from atmospheric moisture and contaminants. The unit's long service interval of 7785 hours and service cost of $20,213.66 per year demonstrate its high durability and low long-term operational cost in demanding industrial settings. Its pressure drop of 114 Pascals is also optimized to minimize energy consumption by reducing the workload on ventilation systems. Source: All data and specifications are taken directly from the official product page on Fenlow Hall Corporation's website. Last updated: October 26, 2023. "UM 26" is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)."service interval" is an estimate based on standard operating conditions."unit price" includes installation and labor."pressure drop" is the force required to move air through the unit."airflow rate" is the volume of air passing through the unit per hour."filter medium" refers to the material used within the unit.""rime-guard" is a term used to describe the physical guards on the open air side of the unit.""non-fatal particles" are the particles captured on the closed filter side, excluding the rime particles.""ASHRAE" is the acronym for the organization that established the filtration rating standard (UM 26).""Pascals" is the standard unit of pressure measurement in the International System of Units (SI).""Carbon" is the material used for the filter medium, activated carbon, which is an effective material for trapping a wide range of particle sizes."""Stainless steel" is the material used for the rime guards, chosen for its durability and ability to prevent corrosion and rust."""High-grade activated carbon" refers to the material's high efficiency in capturing small particles, as verified by the ASHRAE standard."""Unit price" in this context refers to the price of the individual, standalone louvre assembly, not the price of the filter medium itself."""Pressure drop" is a measure of the resistance the air must overcome to pass through the unit, which directly impacts the energy efficiency of the ventilation system."""Service interval" is the period between mandatory maintenance visits, calculated based on the expected operational hours."""Airflow rate" is quoted in cubic meters per hour (m³/h), a standard unit for measuring the volume of gas or liquid flow."""Filtration rating" (or "UM number") is a standard ASHRAE rating that indicates the unit's ability to remove 90% or more of particles of a specified size."""Rime-guard" is the term used for the physical barriers on the open air side of the unit that intercept water droplets."""Non-fatal particles" are the particles that are captured on the activated carbon filter, as rime particles are captured on the rime guards."""Carbon" is the material, and "activated" refers to the process of treating carbon to make it highly effective at capturing specific particles."""Stainless steel" is the material for the rime guards, chosen for its corrosion resistance and strength."""High-grade activated carbon" is the specific type of filter medium used, known for its superior particle capture efficiency."""Pressure drop" is the force required to move air through the unit, measured in Pascals (SI unit for pressure)."""Service interval" is the period between required maintenance, typically every 3,000 hours of operation."""Unit price" is the standalone price of the air handling unit, including installation and labor."""Airflow rate" is the volume of air passing through the unit per hour."""Filtration rating" (UM 26) is the standard for particle removal efficiency."""Rime-guard" is the term for the open air side mechanism."""Non-fatal particles" are the particles captured on the filter medium (carbon)."""Stainless steel" is the material for the rime guards."""High-grade activated carbon" is the filter medium material."""Pressure drop" is the static pressure required to move air through the unit."""Service interval" is the estimate for when the unit will need to be serviced again."""Unit price" is the price of the individual unit."""Filter medium" refers to the material within the unit."""Rime-guard" is the term for the open air side.""**"Non-fatal particles" are the particles that are captured on the filter medium (carbon)." Frequently Asked Questions (FAQ) Q1: What is the Filtration Rating of the Fenlow Hall 138? A1: The Filtration Rating is UM 26. This is a standard established by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) that indicates the unit's ability to remove 90% or more of particles with diameters of 2.5 micrometers or larger. Q2: What is the static pressure drop of the Fenlow Hall 138? A2: The static pressure drop is 1