*myaeroexpo

Catalogs
LTG Incorporated
LTG High Performance Tangential Fans

LTG High Performance Tangential Fans

Product catalog summary

Overview: The document outlines the technical specifications and details for LTG's High Performance Tangential Fans, specifically the VQ series, which includes models VQN, VQH, and VQT. These fans are designed for applications requiring uniform air distribution across a wide area, utilizing a unique flow principle that eliminates the need for additional baffles and vanes.

Flow Principle: Tangential fans intake air along the entire length of the impeller's outer periphery, reversing and accelerating it through the impeller's interior before distributing it evenly at the discharge side. This design ensures uniform airflow and space efficiency.

Advantages: Key benefits include uniform airflow, space-saving design, adaptability to various machine widths, low noise operation, and multiple configuration options. The fans are suitable for diverse applications such as bakeries, industrial ovens, cooling systems, and more.

Specifications: The document details specifications for different fan types (VQN, VQH, VQT) with varying service conditions and material compositions. Each type is designed to handle specific temperature ranges and environmental conditions, with impeller diameters ranging from 200 mm to 1000 mm.

Materials: The casing and impeller materials include galvanized steel, stainless steel, and painted steel, chosen for durability and performance under specified conditions.

Acoustics and Maintenance: Acoustic data is provided for noise levels, and guidelines for greasing intervals are outlined based on operating temperatures and conditions. Increased greasing frequency is recommended for higher temperatures and harsh environments.

Technical Data and Dimensions: Detailed dimensions and technical data are provided for each fan type and size, including maximum motor power, weight, and operational parameters. Fan curves illustrate performance metrics such as air volume and velocity pressure.

Technical Brochure Overview: This document provides detailed specifications and technical data for LTG Aktiengesellschaft's high-performance tangential fans, specifically the VQN, VQH, and VQT models. The brochure includes information on impeller diameters ranging from 315 mm to 1000 mm, along with fan curves, dimensions, and installation guidelines.

Specifications: The brochure details various impeller diameters (315 mm, 400 mm, 500 mm, 630 mm, 800 mm, and 1000 mm) and their corresponding technical data, including dimensions, maximum motor power, weight, and operational temperature ranges. Each fan type (VQN, VQH, VQT) is designed for specific temperature ranges and operational conditions.

Fan Curves: The document includes fan curves for each impeller diameter, illustrating the relationship between air volume per meter impeller length, mean discharge face velocity, velocity pressure, and static pressure. These curves are essential for understanding the performance characteristics of each fan model.

Installation Guidelines: The brochure provides installation instructions, emphasizing the importance of fixing the fan without distortion and considering thermal expansion for high-temperature fans. It also highlights the need for on-site insulation to maintain the maximum ambient temperature of the bearings.

Operational Recommendations: The fans are designed for continuous operation with constant load. The document advises on safety codes, temperature resistance, and service life of V-belts, and provides guidance on pulley diameters for belt drives.

Selection and Application: The brochure includes a section on selecting the appropriate fan model based on application requirements, such as air volume, static pressure, dynamic pressure, and total pressure. It provides formulas for calculating these parameters to ensure optimal fan performance.

Technical Specifications: The document provides detailed specifications for high-performance tangential fans, specifically the LTG Tangential Fan type VQT 315/1250. Key parameters include air volume (17500 m3/h), static pressure (320 Pa), and efficiency (54%). The fan operates at a speed of 1000 rpm with a maximum rated speed of 1091 rpm. The shaft power consumption is specified as 5 kW.

Performance Data: The fan's performance is evaluated at different specific gravities, with total pressure values of 550 Pa and 211 Pa for ρ20_C = 1.2 kg/m3 and ρ500_C = 0.46 kg/m3, respectively. The exhaust velocity is maintained at 20 m/s.

Acoustical Data: The sound power level is 94 dB, with an A-weighted sound power level of 89.5 dB(A) and a sound pressure level of 78.5 dB(A) at a 1-meter distance.

Product Advantages: The document highlights advantages for machine and plant constructors, such as reduced costs and expanded installation options. For operators, benefits include straightforward servicing and space-saving layouts.

Product Range: The product range includes impeller lengths from 400 mm to 1600 mm and diameters from 200 mm to 500 mm, with temperature ranges categorized as N (120°C), H (300°C), and T (500°C).

Contact Information: LTG Aktiengesellschaft is based in Stuttgart, Germany, with contact details provided for both their German and US offices.

Catalog excerpts

Technical Documentation LTG High Performance Tangential Fans Series VQ Impeller diameter 200 to 1000 mm

Open the catalog to page 1

© LTG Aktiengesellschaft · Grenzstraße 7 · 70435 Stuttgart · Germany Tel. +49 (711) 8201-0 · Fax +49 (711) 8201-696 · [email protected] · www.LTG.net Former editions are invalid · Subject to technical modifications

Open the catalog to page 2

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Many production processes require a linear extended and absolutely even distribution of air or other gases to the working area. Because of their special design, tangential fans meet this requirements in the best possible way. The rigid design and the use of high quality materials secure a long service life. By the working principle, that does away with additional baffles and vanes and the space saving design, the use of tangential fans is very economic.  Space saving due to a 90_ airflow deflection.  The fan width can be exactly...

Open the catalog to page 3

nAIR TECH Type VQNService Conditions gas temperatures: -25 °Cupto+40 °C permissible bearing temperatures: Tangential fan with shaft end on the drive side. Rigid welded casing with duct connection flange for suction side and discharge side. The impeller is both sides bedded in self-aligning ball bearings in pillow block frames. Bearing design life is 20000 houres (90% statistical). Both bearings have grease nipples. The impeller is balanced to grade Q 6.3 of VDI 2060. With the suction opening on top, viewed against the discharge opening, the drive side shaft end can be right hand or left hand....

Open the catalog to page 4

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Acoustics, Greasing Intervals The catalogue data are based on: The specific mass of air is: ρ=1.2 kg/m3. The performance data are laboratory tested according to VDI 2044 with unobstructed air flow Acoustical data The acoustical data are for discharge side, tested in a reverberant field. The A-weighted sound power level LWA can be transformed into a A-weighted sound pressure level by the equation LpA = LWA - 10 log S/1 m2 For this the exact total applicable panel area S ean be used. Unweighted sound power level LW [dB] The sound...

Open the catalog to page 5

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Impeller Diameter 200 mm Type The indicated dimensions are for the maximum rated power for each nominal length. Dimensions for lower rated motor power on request. © LTG Aktiengesellschaft ■ GrenzstraUe 7 ■ 70435 Stuttgart ■ Germany Former editions are invalid ■ Subject to technical modifications

Open the catalog to page 6

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Impeller Diameter 200 mm Fan Curves mean discharge face velocity c [m/s] air volume per meter impeller length Vm [m3/(sSm)] rated speed n [rpm] up to impeller length L [mm] air volume per meter impeller length Vm [m3/(hSm)] velocity pressure pdyn [Pa] * The shaft power consumption shown in this diagram does not include belt drive losses. © LTG Aktiengesellschaft · Grenzstraße 7 · 70435 Stuttgart · Germany Tel. +49 (711) 8201-0 · Fax +49 (711) 8201-696 · [email protected] · www.LTG.net Former editions are invalid · Subject to technical...

Open the catalog to page 7

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Impeller Diameter 250 mmDimensions, Technical Data Type The indicated dimensions are for the maximum rated power for each nominal length. Dimensions for lower rated motor power on request. © LTG Aktiengesellschaft ■ GrenzstraUe 7 ■ 70435 Stuttgart ■ Germany Former editions are invalid ■ Subject to technical modifications

Open the catalog to page 8

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Impeller Diameter 250 mm Fan curves mean discharge face velocity c [m/s] air volume per meter impeller length Vm [m3/(sSm)] speed rated speed n [rpm] n [rpm] up to impeller length L [mm] air volume per meter impeller length Vm [m3/(hSm)] velocity pressure pdyn [Pa] * The shaft power consumption shown in this diagram does not include belt drive losses. © LTG Aktiengesellschaft · Grenzstraße 7 · 70435 Stuttgart · Germany Tel. +49 (711) 8201-0 · Fax +49 (711) 8201-696 · [email protected] · www.LTG.net Former editions are invalid · Subject...

Open the catalog to page 9

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Impeller Diameter 315 mmDimensions, Technical Data Type The indicated dimensions are for the maximum rated power for each nominal length. Dimensions for lower rated motor power on request. © LTG Aktiengesellschaft ■ GrenzstraUe 7 ■ 70435 Stuttgart ■ Germany Former editions are invalid ■ Subject to technical modifications

Open the catalog to page 10

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Impeller Diameter 315 mm Fan curves mean discharge face velocity c [m/s] rated speed n [rpm] up to impeller length L [mm] air volume per meter impeller length Vm [m3/(sSm)] air volume per meter impeller length Vm [m3/(hSm)] velocity pressure pdyn [Pa] The shaft power consumption shown in this diagram does not include belt drive losses. © LTG Aktiengesellschaft · Grenzstraße 7 · 70435 Stuttgart · Germany Tel. +49 (711) 8201-0 · Fax +49 (711) 8201-696 · [email protected] · www.LTG.net Former editions are invalid · Subject to technical...

Open the catalog to page 11

nAIR TECH The indicated dimensions are for the maximum rated power for each nominal length. Dimensions for lower rated motor power on request. © LTG Aktiengesellschaft ■ GrenzstraUe 7 ■ 70435 Stuttgart ■ Germany Former editions are invalid ■ Subject to technical modifications

Open the catalog to page 12

Technical brochure • High Performance Tangential Fans VQN, VQH, VQT Impeller Diameter 400 mm Fan curves mean discharge face velocity c [m/s] air volume per meter impeller length Vm [m3/(sSm)] speed n [rpm] rated speed n [rpm] up to impeller length L [mm] air volume per meter impeller length Vm [m3/(hSm)] velocity pressure pdyn [Pa] The shaft power consumption shown in this diagram does not include belt drive losses. © LTG Aktiengesellschaft · Grenzstraße 7 · 70435 Stuttgart · Germany Tel. +49 (711) 8201-0 · Fax +49 (711) 8201-696 · [email protected] · www.LTG.net Former editions are invalid · Subject...

Open the catalog to page 13