White Papers

Below you’ll find varied collection of White Papers focused on the topics of Energy Recovery Wheels and Energy Recovery in general.

Energy Recovery Best Practices During Pandemic

In times of extreme health risk such as a pandemic, it’s helpful to have a good understanding of how outdoor air ventilation systems can reduce the spread of pathogens within the built environment.

Download 733KB

Understanding Efficiency of Energy Recovery Regional Climate Zones, AHRI / ASHRAE Standards & Maintaining Lifetime Energy Savings

When designers are considering the use of
energy recovery wheel options, they should
consider multiple factors to provide the best
overall fit to their budget. Those factors
are regional climate zone, energy recovery
ratio at the design flow range, and the
ability to maintain performance over the
life of the equipment.

Download 4MB

ANSI/AHRI 1060 Performance Rating of Air-to-Air Exchangers for Energy Recovery Ventilation Heat Equipment

This standard establishes a single set of requirements for the testing and rating of air flow rate, sensible, latent, and total effectiveness, and pressure drop of air-to-air energy recovery ventilation equipment; whereby, equipment performance ratings can be compared from product to product.

Download 992KB

AHRI Guideline W: Selecting, Sizing, & Specifying Packaged Air-To-Air Energy Recovery Ventilation Equipment (2005)

The purpose of this guideline is to provide information to support the application of Air-to-Air Energy Recovery Ventilation Equipment (AAERVE). This guideline supports AAERVE that is manufactured using Air-to-Air Heath Exchangers (energy recovery components) rated in accordance with ARI Standard 1060. These recovery components include Heat Pipe Heat Exchangers, Plate Heat Exchangers, and Rotary Heat Exchangers.

Download 354KB

Gard Analytics - ASHRAE 1254-Rp Evaluating The Ability Of Unitary Equipment To Maintain Adequate Space Humidity Levels, Phase II

The objectives of ASHRAE Research Project 1254-RP "Evaluating the Ability of Unitary Equipment to
Maintain Adequate Space Humidity Levels, Phase II" were: a) to compare various unitary air conditioning system humidity control configurations in terms of humidity control performance and
operating costs; and b) develop guidelines to help identify the important application characteristics and climate factors that determine which option is most appropriate.

Download 1MB

Matching the Sensible Heat Ratio of Air Conditioning Equipment with the Building Load SHR

There is a mismatch between the SHR of the typical unitary air conditioner and that of the typical building load. The resulting loss of indoor humidity control can cause structural, comfort and health problems. Enthalpy recovery ventilation systems can address these issues by allowing standard unitary packaged cooling equipment to closely match building SHR, while conserving energy and reducing peak demand.

Download 388KB

Acceptable Cross Leakage for Energy Recovery Ventilation According to ASHRAE Standard 62.1

Per ASHRAE Standard 62.1, HVAC system designers have clear-cut parameters for allowable energy recovery ventilation (ERV) cross leakage/cross contamination. This white paper is intended to provide a summary of the key elements of this addendum.

Download 369KB

Benefits of Energy Recovery Ventilation for Planned Replacement of HVAC Systems

When properly implemented, a planned replacement strategy has significant advantages for the contractor, the building owner, and the utility.

Download 22KB

ASHRAE Journal August 2008: Improving Humidity Control with Energy Recovery Ventilation

Industry article describing how ERV will allow unitary air-conditioning equipment to maintain the indoor relative humidity within the desirable 40% to 50% range under virtually all conditions, including high humidity outdoor conditions.

Download 500KB

The HVAC News: ERV Comes of Age for DX Systems

Industry article describing the increase in popularity of ERV technology coupled with standard unitary equipment along with its benefits.

Download 788KB

Airxchange Wheels Payback

An example of typical energy recovery wheel payback.

Download 125KB

Airxchange Wheels Improve Dehumidification Performance

Outdoor air represents the largest source of moisture in most buildings. On hot and humid days, Airxchange wheels dehumidify outdoor air without condensation. On cold and dry days, Airxchange wheels humidify the outdoor air minimizing the need for additional building humidification

Download 115KB

Improve HVAC System Efficiency

An Example of how energy recovery ventilation increase total system efficiency

Download 145KB

Airxchange 5 Year Warranty

Copy of Airxchange's Standard 5 Year Warranty