Change is in the AER!

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For efficient air movement, look no further than Greenheck’s AER direct drive sidewall fan.

With 30% higher maximum flow compared to existing direct drive options, the AER serves all your clean air application needs. Constructed from corrosion-resistant galvanized steel and incorporating a high-efficiency cast aluminum airfoil propeller, the AER outclasses the competition. Package AER with any of our standard sidewall options or accessories for all your wall mounted fan needs!

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Wall Fans From Greenheck

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In this initial release, four sizes ranging from 20 – 36 are available in supply and exhaust configurations with performances up to 29,000 cfm. Construction consists of a corrosion-resistant galvanized steel fan panel and drive frame that incorporates a cast aluminum airfoil propeller.

Greenheck’s Wall Propeller Fans include both direct and belt-driven fans with fabricated steel, aluminum, or cast aluminum blades. These wall fans are suitable for clean air applications, including exhaust, supply, or filtered supply. You can view the full product line here.

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Discover Greenheck CAPS

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Check out Greenheck’s Computer Aided Product Selection Program (CAPS) for detailed product descriptions, application information, dimensional drawings, and product performance specs, as well as configured Revit and AutoCAD drawings for most products.

Here’s a snapshot of what you can look forward to in CAPS version 4.25:

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CAPS provides a complete menu for Greenheck’s fans and ventilators, centrifugal and vane axial fans, energy recovery ventilators, make-up air units, kitchen ventilation systems, dampers, louvers, air handlers, and fume exhaust systems. Find out more about this convenient and powerful tool here.

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Linear Capacity Dedicated Outdoor Air Systems

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No electrical design engineers specify incandescent light bulbs, so why would any mechanical engineer specify a fixed capacity DOAS unit?

It takes true pioneers to change the conventionally fixed capacity DOAS paradigm to Demand Control Ventilation variable capacity DOAS with turndown to 20% of full airflow capacity.

Much like LED lighting, Linear Capacity DOAS saves more than 50% of the energy over the life of the equipment. 

Every ventilation system by code needs to provide the capacity for maximum occupancy, but all spaces are never fully occupied in the building at all times. The ability to match ventilation to real-time occupancy is a tremendous opportunity for energy savings.

Linear Capacity DOAS is a truly innovative product packed with all the latest technologies, including VRF compressors, EC condenser fans, EC supply blower, Active Coil Exposure, and demand ventilation controls in a simple packaged DOAS offering. Most importantly, it provides third-party verified >50% energy savings.

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Linear Versus Fixed Capacity DOAS

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Linear Capacity (LC) is a patent-pending innovative ventilation technology that simultaneously delivers breakthrough performance, energy efficiency, and indoor air quality.

The LC utilizes a geometrically varying evaporator exposure device (Active Coil Exposure) to maintain designed leaving dew point throughout the entire operating range, with an optimized linear performance from 100% down to 20% of ventilation load with an application range from 500-7,500 CFM of outdoor air. The LC achieves 53% energy savings versus conventional DOAS, independently verified by Florida Solar Energy Center (F.S.E.C.).

Energy Savings Vs. Fixed Capacity DOAS

Featuring Active Coil Exposure, the LC unit is equipped with five independent and separated evaporator coils. Utilizing a laser positioning system which allows only the active evaporator coils to be exposed to the air flow path, A.C.E. adjusts the coil surface based on the airflow demand. Ventilation can then be scheduled to meet demand in different zones based on occupancy levels, from 100 to 20% of capacity, throughout the ambient operating range.

If there is a period of time when dehumidification is not required, Linear Capacity provides an option to perform as a constant volume unit. The LC unit is able to provide energy savings due to the variable refrigerant flow, variable airflow, variable condenser air, and refrigerant management, greatly outperforming conventionally fixed capacity DOAS units.

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Where Indoor Air Quality And Energy Efficiency Intersect

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Breakthrough Energy Savings Vs. Conventional Fixed Capacity DOAS

Florida Solar Energy Center conducted a study in which the Linear Capacity achieved greater than 50% energy savings versus conventionally fixed capacity DOAS. Regarding this new variable capacity DOAS technology, they write:

“Addison HVAC has developed an exclusive DOAS package design that uses a novel combination of variable refrigerant flow (VRF), variable air flow (VAF), and Active Coil Exposure. This design results in energy-efficient ventilation with the potential to meet diverse requirements without over- or under-ventilating”

Where Indoor Air Quality And Energy Efficiency Intersect

Linear Capacity offers active ventilation adaptable for AIQA flush-out per LEED EQc4, Air Quality Assessment.  The LC enhances IAQ by managing moisture content of the outdoor air throughout the ventilation range.

Click “Read More” for the white papers.

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Price Engineer’s HVAC Handbook Has Gone Digital

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Introducing The Most Comprehensive Guide To HVAC Fundamentals

Price has long been innovative in the presentation of technical content and product information, and with a need to present the growing content of the upcoming 7th Edition Price Catalog in a more efficient way, the next innovative step for Price was to create the Price Engineer’s HVAC Handbook.

The creation of the Price Engineer’s HVAC Handbook has been one of the largest and most rewarding projects we’ve had the pleasure to be a part of. The journey from inception to print has been an enjoyable and thoroughly educational one for the entire Price team and we hope that the end product brings value to the HVAC community.

Watch the full video to learn more!

View In Any Browser Or Any Device

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The Price Engineer’s HVAC Handbook is a world-class HVAC reference accessible anywhere you have an internet connection. Pages are bookmarkable for easy access, and the content is always up-to-date, featuring a fusion of fundamental principles, ongoing research, and building design guidance and representing the accumulated knowledge and experience of hundreds of engineers related to the application of air distribution products.

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New Efficiency Standards from DOE

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Effective January 1, 2018, the U.S. Department of Energy (DOE) will implement a regulation prohibiting the production of new commercial rooftop and split systems larger than five tons. At the same time, the DOE will move to an IEER part-load-efficiency-only minimum requirement.

This regulation represents a 13% efficiency increase in IEER over current standards and will be followed by an additional increase of 15% in 2023 (Source: Department of Energy).

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