Trane TRG-TRC013-EN manual Surge

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g

Inlet Vanes

 

 

 

 

surge

 

 

inlet vane

line

 

 

 

 

pressure

position (%)

 

design system

 

 

 

 

resistance curve

 

 

%

static

VAV system

&

$

modulation

 

 

 

 

 

 

sensor

curve

 

 

 

 

 

set point

 

 

 

 

 

airflow

g MC

 

 

 

KKe

upward. The fan begins to “ride up” its current vane position curve toward f, from the design operating point e, trying to balance with this new system resistance curve. As a result, the fan delivers a lower airflow at a higher static pressure.

The system static-pressure controller senses this higher static pressure and sends a signal to the inlet vanes, instructing them to begin closing. When the inlet vanes are closed, the performance curve for the fan shifts downward until the balance point g falls along the VAV system modulation curve and the fan satisfies the system static-pressure controller.

The advantage that inlet vanes provide over discharge dampers is that the fan approaches the surge region at a much lower airflow and static pressure.

The low end of the fan’s modulating range is either the intersection of the modulation curve with the surge line, or the leakage rate through the fully closed inlet vanes, whichever is larger. Typically, a satisfactory modulating range is achieved by selecting a fan that is two or three sizes (fan wheel diameter) smaller than a fan that would be selected for a constant-volume system. Then the design operating point will fall farther to the right on the curve, permitting a larger range of modulation.

It should be noted that the addition of vanes to the inlet of a fan introduces a pressure drop that must be overcome by the fan. Inlet vane performance curves are established through fan testing, and manufacturers typically publish fan performance data with the effect of the inlet vanes included.

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Contents Page Business Reply Mail Comment Card Trane Company Worldwide Applied Systems Group Air Conditioning Fans 99999999999999999999999999999 CaQ3caM6793O Air Conditioning Fans Measuring Pressure Positive Duct Pressure Inclined Manometer Total Pressure Velocity Pressure vs. Static PressureSx4 cwt Tvxvxqt4 tp Measuring Static Pressure Measuring Total Pressure Fan Performance Test Determining Fan Airflow Plotting Fan Performance Points Fan Performance Curve Input Power Fan SpeedInput Power Fan SurgeFan Surge Line Percent of Wide-Open AirflowTabular Performance Data System Resistance System Resistance Curve Static Pressure AirflowFan System Interaction Higher System Resistance Lower System ResistanceStatic Efficiency Cfm ⋅ 2.0 in. H 2O = 55% Constant-Volume System Variable-Pitch Vaneaxial Fan Cwt up t ps ux- r--t Fwxt QpstDxzt K up p 2 p Ps2 u Cwt sp Qpst Angl Centrifugal Fan Forward Curved Fan Cwt px Backward Inclined Fan FC vs. BI Fans Cwt pxrp Cwt -p LS up Bxrt Rwp Backward Curved Fan Airfoil FanPlug or Plenum Fan Vaneaxial Fan Cwt pxrp B6 t4 bx-xp xt Ps KP up Cwt eeK up x p Up4 Kvpx2 Vxzt 2 ps ux tK up Fan Selection Variable-pitch vaneaxial VpvaVAV System Riding the Fan Curve Riding the Fan CurveForward Curved Centrifugal Fan Fan Control Loop VAV System Modulation Curve Methods of Fan Capacity Control Discharge DampersSurge Inlet Vanes Surge Fan-Speed Control Variable-Pitch Blade Control Cwt t EeK/ up Fan Control Comparison DischargePeriod four System Static-Pressure Control Optimized Static-Pressure Control System Effect Acoustics Acoustical Guidelines Poweractual = Air Density Ratio ⋅ Powerstandard Effect of Actual ConditionsEquipment Certification Standards PurposeReview-Period One Review-Period Two Review-Period ThreeReview-Period Four Application considerationsCwt f-tq Pt2 CaQ3caM6793O CaQ3caM6793O CaQ3caM6793O Bndb Kx Riding the fan curve K -t sx 9bw5 Flcc t e IGLCD8NIPP

TRG-TRC013-EN specifications

The Trane TRG-TRC013-EN is a comprehensive guide that provides valuable insights into the technical specifications, features, and operational characteristics of Trane's advanced HVAC systems. This document serves as an essential resource for engineers, contractors, and facility managers looking to optimize their heating, ventilation, and air conditioning solutions.

One of the standout features of the Trane TRG-TRC013-EN is its emphasis on energy efficiency. Trane has integrated state-of-the-art technology into their HVAC systems, allowing for reduced energy consumption and lower operational costs. This is particularly important in today's environmentally conscious market, where businesses are increasingly seeking sustainable solutions.

The guide outlines various advanced control technologies employed in Trane systems. These control systems enable seamless integration of HVAC components, enhancing overall system performance. Features such as variable speed drives and intelligent sensors allow for precise control of heating and cooling outputs according to real-time demand, contributing to energy savings and improved indoor comfort.

Additionally, the TRG-TRC013-EN highlights Trane’s commitment to reliability and durability. The HVAC systems are designed with robust materials and engineered to withstand challenging operating conditions, ensuring long-lasting performance and minimized downtime. This characteristic is crucial for commercial facilities that require consistent climate control to maintain productivity and comfort.

Another key aspect covered in the guide is Trane’s focus on indoor air quality (IAQ). Advanced filtration options and ventilation strategies are discussed, showcasing how their systems can effectively improve air quality while maintaining energy efficiency. Enhanced IAQ is increasingly recognized as a vital component of overall health and well-being in indoor environments, making it a priority for Trane's product development.

Furthermore, the TRG-TRC013-EN provides details on compliance with various industry standards and regulations, ensuring that users can depend on their systems to meet both local and international requirements. This not only simplifies the planning and installation process but also demonstrates Trane's commitment to safety and quality.

In summary, the Trane TRG-TRC013-EN guide serves as an invaluable tool, highlighting the innovative technologies, energy-efficient features, and reliable performance of Trane HVAC systems. With a strong focus on sustainability, indoor air quality, and regulatory compliance, Trane continues to position itself as a leader in the HVAC industry, catering to the ever-evolving needs of commercial facilities.
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