CPA-DW #8 - Evapco

Finding the right solution for controlling a critical
process environment is vital to providing a safe,
healthy product with a defined shelf life. For years,
Evapco's Critical Process Air (CPA) Systems, designed
specifically for the industrial refrigeration market, have
provided the temperature, pressurization, and air purity
control for these special environments. Now with the
integration of a desiccant dehumidifier, the CPA-DW can
also meet the demanding requirements for any humidity
and condensation control application.
The Ideal Solution for Controlling Critical
CPA-
PRE-FILTER
● 4” thick pleated or washable
● Maintains interior unit cleanliness
● Extends final filter life
With the introduction of the “DW” option to the
CPA System ® product line, Evapco now offers complete
flexibility in design, capacity and features to fulfill the
most demanding applications. Every CPA-DW is constructed
with a comprehensive choice of quality components
integrated together to create a state of the art,
custom air handling unit backed by the industry's most
experienced critical process product design and system
application engineers.
Our desiccant wheel offers the most advanced
design features including:
●
●
●
●
Viton Seals rated for the life of the unit, rather than
maintenance intensive Silicone/Teflon Seals.
Center shaft design with two sealed, heavy-duty
no maintenance bearings, in place of light-duty
caster supports.
Heavy-duty corrosion resistant nickel plated drive
chain contacts the entire perimeter of the desiccant
wheel sprocket, rather than a lighter duty timing belt
drive with partial contact.
Exclusive two year warranty on the media and five
year structural warranty.
UTS
TSI
SID
IDE EAI
AIR
AIR
CONTROLS
● Complete, project specific controls
● Stand alone or networked PLC
● Fully tested prior to shipment
URN
AIR
©2005 EVAPCO, INC.

Processing Environments
DW
DESICCANT SECTION
● High capacity systems for a variety of application specific requirements
● Integrated system design built into the unit and protected from the
elements; not a separate “add on” module
● Natural gas, steam, or electric reactivation options
● Optional integrated face/bypass dampers for precise humidity control
● Complete, project specific PLC controls for stand alone
or networked applications
● System capacities up to 87,500 CFM
HEATIN
● Steam
● Brine/gly
● Refriger
● Natural
PRE-COOLING COIL
●
●
Galvanized steel or aluminum finned coils
Optional copper or stainless steel
tube/aluminum fin or all
stainless steel coils
UNIT CASING
● Sanitary, cleanable, double wall design
● 100% drainable pans throughout
● Insulation thickness to match the application
● Galvanized, stainless steel or aluminum construction
ESS
● UVC germicidal light system
● Preserves coil cleanliness
● Eliminates manual coil cleaning

G
col
nt Hot Gas
Gas or propane
FINAL FILTERS
● 95% (1 micron) to 99.99%
HEPA (0.1 microns) filters
100%
Conditioned
Air Supplied
to the Critical
Process Area
CPA-DW models available
to fit any Critical Process
Dehuhumidification application:
POST COOLING COIL
● Galvanized steel or aluminum
finned coils
● Optional copper or stainless steel
tube/aluminum fin or all stainless
steel coils
CPA-DW-2
CPA-DW-4
CPA-DW-6
CPA-DW-8
CPA-DW-12
CPA-DW-16
CPA-DW-20
CPA-DW-24
CPA-DW-30
CPA-DW-36
CPA-DW-40
CPA-DW-48
CPA-DW-56
CPA-DW-60
CPA-DW-70
1,500-2,500 CFM
3,000-5,000 CFM
6,000-7,500 CFM
8,000-10,000 CFM
11,000-15,000 CFM
16,000-20,000 CFM
20,000-25,000 CFM
24,000-30,000 CFM
30,000-37,500 CFM
36,000-45,000 CFM
40,000-50,000 CFM
48,000-60,000 CFM
56,000-70,000 CFM
60,000-75,000 CFM
70,000-87,500 CFM

CPA Systems –The Ideal Solution
SUPERIOR HYGIENE AND PERFORMANCE THROUGH INNOVATIVE DESIGN
Lower Operating and Maintenance Costs
• Evapco manufactured, high efficiency finned coils result
in the lowest fan horsepower.
• Specifying the ESS will maintain the evaporator coil in
“like new” condition which yields optimum heat
transfer efficiency and maintains design air flow.
• The ESS will provide cleaner interior surfaces which
will extend the life of the final filters.
• The ESS virtually eliminates the need for cleaning
equipment, solutions, chemicals and labor.
Superior Cleanliness
• The industry’s most sanitary enclosure design that minimizes
fastener heads on the interior walls and ceiling.
• The “100% free flow” drain pan eliminates stagnant
water.
• Optional 304 stainless steel interior enclosure panel
construction.
Standard Construction Features
• Unique, double wall enclosure panels.
• Evapco heavy wall finned coils manufactured per
ASME/ANSI B31.5 and factory charged with nitrogen.
• Heavy gauge G-235 mill hot dip galvanized steel
components for superior corrosion protection.
INNOVATIVE HEAT
EXCHANGER COIL DESIGN
● R&D Focused Technology
● Optimal Heat Transfer Efficiency
● Designed
Specifically for
Industrial
Applications
● Optimized
Geometry
● Optimized
Coil Circuiting
This design
provides greater
refrigeration capacity
with lower fan horsepower
requirements, making the EVAPCO CPA-DW
System your low energy solution.
STATE OF THE ART ART CONTAMINANT CONTROL:
CONTROL: ESS TECHNOLOGY ESS TECHNOLOGY
Specifying the EVAPCO Sanitizing System (ESS ) with your CPA
System will virtually eliminate hazardous bioaerosols from the
cooling coil/pan, resulting in hygienically clean air and improved
product quality while maintaining system performance and significantly
reducing annual maintenance costs.
● Provides Full Germicidal
Effect at Low Air
Temperatures
● Greater than Seven Times
the Effect of a Standard
UV Bulb
● Destroys Byproducts
from Mold and Bacteria
● Lower Operating and
Maintenance Costs
Including the ESS with your CPA System will ensure effective
cleaning of the cooling coil and pan, as well as provide continuous
cool clean air to your critical food processing areas.

Innovation, Performance, Experience
Advanced Technology—Available Today
The EVAPCO Research & Development Center, located at the
Corporate Headquarters in Taneytown, MD has over 40,000 square
feet dedicated to research and product development. Experienced
R&D Engineers perform product and application research year round
in four environmental test chambers.
The Research Center features the industry’s largest low temperature,
insulated environmental test chamber. The conditions in the test
chamber are controlled by a fully functional ammonia refrigeration
system designed to operate at suction temperatures as low as -40°F.
EVAPCO is committed to providing the most innovative products
to meet today’s stringent application needs and has dedicated the
necessary resources to provide that technology today.
Evaporative Condensers
Low Temperature Test Chamber
Custom
Recirculators
& Vessels
Induced Draft Models
Evaporators
Forced Draft Models
STW STD STM
Cooling Towers & Closed Circuit Coolers
MRP Recirculator
Systems
Induced Draft Models
Forced Draft Models
World Headquarters & Research Center
EVAPCO, Inc. • 5151 Allendale Lane
Taneytown, MD 21787 USA
PHONE: 410-756-2600 • FAX: 410-756-6450
E-MAIL: marketing@evapco.com
CPA System Sales & Engineering
EVAPCO–Iowa • 1234 Brady Boulevard
Owatanna, MN 55060 USA
PHONE: 507-446-8005 • FAX: 507-446-8239
E-MAIL:evapcomn@evapcomn.com
Visit EVAPCO’s Website at: http://www.evapco.com