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CURRENT INITIATIVES AT

Association membership supports TECA's development of training programs and other initiatives to meet the needs of residential heating, ventilating and cooling industry professionals. At the board level, the dedicated industry involvement of member volunteers keeps TECA at the forefront of technological advances, changes in policy, and other issues affecting the trade. Our members rely on TECA as a voice for their concerns at the provincial and federal level, and their input directs TECA's development of and participation in projects that satisfy our mandate.

Here are some of the initiatives currently underway.

Heat Recover Ventilation (HRV)

Our long awaited Heat Recovery Ventilation design and installation course is scheduled for delivery in the Fall of this year. The certificate course will include instruction on Ventilation requirements, HRV duct sizing and distribution methods and best practices as well as equipment selection and control options. The course will be structured to complement our suite of "Quality First Guidelines" for contractors and in service of the municipalities / cities of British Columbia.

Principles of Moving Air (POMA)

The Principles of Moving Air ("POMA") Quietly and Efficiently manual has been completely revised. It is an expansion and simplification of TECA's original 'Basics of Air' manual. POMA is a true duct design course and a revival of good air moving practice first developed in the 1930's. It explains the logic behind the duct sizing of TECA's original Quality First Forced Air Guidelines and the duct sizing tables of TECA's 2012 Ventilation Guidelines.

Since it was first introduced in 2008 and titled 'Basics of Air', enthusiastic attendees have offered many suggestions for improvement including 35 fresh new tech sheets. The complete overhaul of this manual includes this supplementary information. The manual is now titled: 'Principles of Moving Air" it is clearly understood that it is an in-depth air moving course. While important to those working in both new construction and change out when it was first published, it is even more important today. Manufacturers continue to shrink the cabinet sizes of heat/cool equipment and yet the air moving requirements (cfm) on a CFM per BTU and CFM per ton remains high. A large benefit of applying this new information is a quiet system with heat/cool air volumes delivered to individual rooms appropriately as needed.

True to the original, POMA maintains its focus on residential air handling systems. POMA uses plain language, practical math and a fully instrumented scale model to demonstrate these important principles. The manual begins with an introduction of terms: flow rate, velocity, air density, duct aspect ratio, static and velocity pressures. It digs deeper into friction losses, fitting losses and system effects all of which compound to restrict the airflow through the system and which determine the power required (transport energy) to do that. This knowledge will also help users to justify the space and more convincingly sell the capital cost to provide adequately sized ducts and the few custom fittings required to provide a quiet comfortable space conditioning system.

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