STD-201 CERTIFICATION PURPOSE
“This standard sets forth a program
whereby the Cooling Technology Institute
will certify that all models of a line of
evaporative heat rejection equipment offered
for sale by a specific manufacturer will
perform thermally in accordance with the
manufacturer's published ratings. . . “
STD-201 CERTIFICATION SCOPE
• Entering wet bulb temperature
10oC to 32.2oC (50oF to 90oF)
• Cooling range > 2.2oC (4oF)
• Cooling approach > 2.8oC (5oF)
• Process fluid temperature < 51.7oC (125oF)
• Barometric pressure
91.4 to 105.0 kPa (27” to 31” Hg)
STD-201 CERTIFICATION HISTORY
• 1962 First Edition Published– Required Extensive Matrix of Tests to Qualify, No Follow Up Tests
• 1981 Minor Revisions• 1986 Substantial Revisions – Enlarged Test Matrix to Qualify• 1991 Major Revisions
– Emphasis on Technical Review with Initial Qualification Test(s)– Added Annual Reverification Test Requirement to Continue
• 1996 Minor Revisions + Closed Circuit Towers• 2002 Minor Revisions + Raised Upper WBT• 2004 Minor Revisions + Reduced Lower WBT• 2009 Revised Format + Evaporative Condensers• 2009+ Continuous Review by P&T Task Group• 2013 Separated into Operations Manual and Rating Standard
STD-201 THERMAL PERFORMANCECERTIFICATION PROGRAM
1 1 4 6 7 7 8 10 8 9 8 9 10 9 11 13 14 16 18 19 21 2330
3441
4854
6169
11
55
6 66
7
7
8
8
8
11
11
12
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85'8
3-'9
0
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
YEAR
NUMBER OF PARTICIPATING MANUFACTURERS
Private Brands
Manufacturer Brands
Through 12/20/2018
CURRENT STATUS (12/31/18)
Participating Manufacturers (PM): 69 + 12 Private Brand Affiliates
PM Primary Locations:12 - North America (10 – USA)6 - Europe
51 - Asia
7 12 14 16 16 16 19 18 18 19 19 21 19 25 32 34 37 43 5058 64
76 8397
119134 140
155
22 5 5
67
811
1213
14
14
1617
18
0102030405060708090
100110120130140150160170180
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
YEAR
NUMBER OF CTI CERTIFIED PRODUCT LINES
Private Brands
Manufacturer Brands
Through 12/20/2018173 Certified Product Lines
CURRENT STD-201TOWER SELECTIONS AVAILABLE
•Open-Circuit and Closed-Circuit Cooling Towers
•Diverse Variety of Construction Materials
Galvanized Steel, Stainless Steel, Fiberglass,
Polyethylene, PVC…
• Wide Choice of Nominal Cell Capacities
~ 1 l/s (16 gpm) to ~ 725 l/s (11,500 gpm)
0
5000
10000
15000
20000
25000
30000
35000
40000
4500019
91
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
YEAR
NUMBER OF CTI CERTIFIED TOWER MODELS
Private Brands
Manufacturer Brands
Through 12/20/2018
~40,000 CTI Certified Models
STD-201 CERTIFICATION PROCESS
• Application Submitted to Thermal Certification Administrator
• Technical Review by Thermal Certification Administrator
• Selection of Tower Model for Initial Qualification Test
• Initial Qualification Test by Certification Test Agency
• Issue Approval Letter With Validation Number
• Annual Reverification Tests for Follow Up
For More Information…
Certification Report Frequently Asked Questions (FAQ) for Applicants, End-Users and Others
List of Participating Manufacturers and CTI Certified Lines
DOR Template Spreadsheet
CTI Certification Directory Publication
• Manufacturers, Line Names and Validation Numbers
Published in CTI Journal – Two Editions per Year
• Online Certification Directory:http://cti.org/certification.php
Company Name (alphabetical order)click here to view company’s websites
Certified Line 1Certified Line 2, etc. (if applicable)
CTI Certification Directory Publication
• Manufacturers, Line Names and Validation Numbers
Published in CTI Journal – Two Editions per Year
• Online Certification Directory:http://cti.org/certification.php
Company Name (alphabetical order)click here to hide company’s websites
Line Name 1Information – Catalog and/or Design Tables, Drawings, etc.Selection – Rating Table
Line Name 2, etc. (if applicable)Information – Catalog and/or Design Tables, Drawings, etc.Selection – Rating Table
(17)
Certification Program Committee
• Chairman – CTI Certification Administrator (non-voting)
• Participating Manufacturers (1 vote per manufacturer)
• CTI Board Liaison (non-voting)________________________________________________
• Advises Certification Administrator on Implementation
• Establishes Annual Operating Budget & Fees
• Recommends Changes to STD-201
Additional Certification Information
• CTI Web Sitehttp://cti.org/certification.php
• CTI Journal
• CTI Office in Houston, Texas USA
• CTI Certification Administrator Michael Womack
C/O Clean Air Engineering Email: [email protected]: 217-347-0842 (office)
217-690-9321 (mobile)
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