Herricane CS
®
Series
A p p l i c a t i o n G u i d e
5
www.trioniaq.com
SECTION II SYSTEM OVERVIEW
Redefining Guaranteed Performance with the H.A.R.E.
Using the proprietary H.A.R.E. (Humidified Air Research Environment) facility, HERRMIDIFIER engineers were able to
accurately evaluate all potential humidification system variables - temperature, velocity, downstream relative humidity, and
steam intensity. From data gathered at 32,000 cfm facility, two sets of information have been gathered enabling a humidification
system to combine the best possible mix of economy and performance.
While temperature and velocity are common well defined terms, downstream relative humidity and steam intensity need
further review. Downstream relative humidity is the humidity level that must be achieved after the moisture from the humidifier
is introduced into the airstream in order to meet the desired room conditions. Steam intensity is defined as the amount of
moisture (steam) introduced per lineal foot of distribution manifold (lb
m
/hr/ft).
The first tool is a comparison of evaporative distance under changing conditions of air velocity and steam intensity at standard of
55ºF and 70% downstream relative humidity. The second tool, developed from thermodynamic and psychrometric relationships
and verified with the H/A/R/E/. determines the correction factor needed to compensate for psychrometric conditions (upstream
temperature and downstream relative humidity) which differ from the selected standard conditions (55ºF and 70% downstream
relative humidity). See Section III for these two charts.
The H.A.R.E research facility was designed and constructed in 1994. System building blocks are:
•
Burnham Series EL-60-0-GP, 2.1 million Btu/hr Boiler
•
York International Model AP-400 Air Handler (up to 32,000 cfm)
•
Steam Flow Meter, featuring Meriam Instrument Orifice Plates
•
Custom designed and fabricated Test Tunnel with variable cross-section up to 6.5’Hx8’W. Test section length equals 32’
of laminar flow.
