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HARTZELL Hartzell Fan, Inc., Piqua, Ohio 45356 www.hartzellfan.com Bulletin A-1

HARTZELL Hartzell Fan, Inc., Piqua, Ohio 45356 www.hartzellfan.com Bulletin A-108-N February 2005 ® H A R T Z EL L FA N, IN C PI Q U A, O HI O U S A B UI LT WI T H H O N O R Fan Engineering Data The history of Hartzell Fan, Inc. actually dates back to 1875 when John T. Hartzell began manufacturing farm wagons in Western Ohio. The development and growth of the company from that point on is intriguing, but the details are too lengthy to include here in total. But some 30 years later, John Hartzell’s grandson, Robert, joined the company after studying engineering at the University of Cincinnati. He was interested in aviation and often talked with Orville and Wilbur Wright and Glen Curtis when they came to Piqua to pick out straight- grained walnut lumber to make their propellers. He saw the possibilities in manufacturing propellers and hired a young engineer, Fred Charavay, to design a line of airfoil blades, which they would hand- draw from a laminated block of Hartzell walnut. From that point, and for the next 70 years, Hartzell Propeller, Inc. would be an industry leader in the design and manufacture of aircraft propellers. Hartzell Fan, Inc. grew from the roots of the aircraft division as Chief Engineer Charavay placed an aircraft propeller in an indus- trial ventilation application in the early 1920’s. The design was refined and Hartzell engineered the first propeller type fan. Prior to 1920, most industrial fans were centrifugal designs, generally large in size with radial blades. The idea of moving air at pressure in an industrial application with an airfoil propeller encountered substantial opposition from skeptical aerodynamic “experts” at the time. Robert Hartzell instructed his engineers to set up a laboratory complete with a small wind tunnel that was similar to the present-day AMCA/ASHRAE test configurations and which, in time, would become AMCA approved. The test results were excellent and substantiated the merits of the Hartzell design. As you can read on the following page, the same commitment to design engineering and manufacturing excellence to provide a quality, reliable industrial air- moving device continues to be the first order of business with Hartzell. Since the first Hartzell fan was put into use, the Hartzell name has been synonymous with quality air-moving equipment. Hartzell is well known throughout the industry for its design innovations and marketing procedures to meet the changing demands of the industrial consumer. The Hartzell Story About Hartzell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 2-3 Hartzell Products General Ventilation Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4 Process Ventilation Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5 Fiberglass Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6 Heating Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7 Performance Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 8-9 Engineering Information Application Data General Ventilation Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10 Process Ventilation Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11 Fan Laws and Formulae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12 Fans and Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13 Density, Temperature and Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14 Safe Operating Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15 Useful Engineering Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 16-19 Fan Sound. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 20-21 Material Corrosion Resistance Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 22-23 Index • First to develop a solid fiberglass, single piece, die formed, highly efficient, non-overloading, airfoil design centrifugal wheel. • First to manufacture industrial fans using an airfoil propeller-type blade. • First to use the air seal venturi orifice fan ring in a propeller fan application. • First to develop all fiberglass industrial fans. • First to establish a stocking program with three-day shipment of over 150 types of fans and blowers. • First to offer a fiberglass center-pivoted motor operated shutter. • First to publish engineering literature for the proper application of industrial fans and AC frequency controllers. For more than 75 years, innovative design concepts, engineering expertise, and production capabilities have made Hartzell an industry leader. Its three manufacturing facilities and two interna- tional licensees produce air-moving equipment designed and built with traditional Hartzell quality. The main manufacturing facility and offices in Piqua, Ohio concentrate on constructing certain stock units as well as units requiring modification of standard designs to meet customers’ special requirements. This flexibility enables Hartzell to customize equipment and solve a wide range of air moving problems. With the advent of Hartzell’s HRS (Hartzell Rotating Stock) Program in 1968, a manufacturing facility was established in Aberdeen, Mississippi to service this program.The success and popularity of the HRS program generated the need in 1970 for a third manufacturing facility to be built. The plant is located in Portland, Indiana and pro- duces stock fans, heating equipment and certain production items. VISIT OUR WEBSITE www.hartzellfan.com OR CALL TOLL-FREE 1-800-336-3267 FOR THE NAME OF YOUR LOCAL HARTZELL REPRESENTATIVE WHO CAN PROVIDE FAN ENGINEERING, APPLICATION OR SELECTION ASSISTANCE. 2 Bulletin A-108-N www.hartzellfan.com 1 (800) 336-3267 ® Product Concept Reliable, efficient performance is the underlying principle of the product concept of every Hartzell fan that is built. Its principle is adhered to uploads/Management/ engineering-guide.pdf