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STD-201 CERTIFICATION PURPOSE
“This standard sets forth a program
whereby the Cooling Technology Institute
will certify that all models of a line of water
cooling towers 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
12.8oC(1) to 32.2oC (55oF to 90oF)
(1) Under review for possible expansion to 10oC (50oF)
• 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 LIMITATIONS
• Unique Product Line Name & Model Numbers
• Applies to Only Product Lines & Models Submitted
• Installed With Ample Unobstructed Air Supply
• Multi-cell Systems Allowed if Airflow is Unaffected
Or Configuration Impact is Included in Ratings
• Optional Accessories Allowed if Airflow is Unaffected
Or Their Impact is Included in Ratings
• Non-certified Configurations or Locations
Should Consider ATC-105 Acceptance Test
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
CTI STD-201 THERMAL PERFORMANCE
CERTIFICATION PROGRAM
NUMBER OF PARTICIPATING MANUFACTURERS
50
Through 12/31/2014
45
8
Private Brands
Manufacturer Brands
40
8
35
7
30
7
25
6
6
20
41
5
34
5
15
30
1
YEAR
2014
2013
23
2012
21
2011
2009
1991
2008
1990
16
2007
1989
2006
1988
2005
1987
11
2004
1986
9
2003
1985
10
2002
1984
9
2001
1
8
2000
1
9
1999
1
8
1998
1
10
1997
1
1996
1
8
1995
1
6
7
1994
1
1992
1
1983
4
7
1993
5
13 14
18 19
2010
1
10
0
6
CURRENT STD-201
41 PARTICIPATING OEM MANUFACTURERS
• Advance GRP (Advance) Cooling Towers, Pvt., Ltd. - 1 Line
• Aggreko Cooling Tower Services - 1 Line
• American Cooling Tower Corporation - 1 Line
• Baltimore Aircoil Company - 10 Lines
• Bell Cooling Tower, Pvt., Ltd. - 1 Line
• Cool Water Technoloties - 1 Line
• Delta Cooling Towers - 1 Line
• Decsa - 1 Line
• Elendoo Technology (Beijing) Co., Ltd. - 2 Lines
• Evapco, Inc. - 7 Lines
• GEA Polacel Cooling Towers B.V. - 2 Lines
• E.W. GOHL GmbH - 1 Line
• Guangzhou Laxun Technology Exploit Co. Ltd. - 2 Lines
• Hunan Yuanheng Technology Development Co., Ltd. - 1 Line
• Jacir - 1 Line
• Jiangsu Dayang Cooling Tower Co., Ltd. - 1 Line
• Ji’Nan ChinTech - 2 Lines
Continued >
CURRENT STD-201
41 PARTICIPATING OEM MANUFACTURERS
• KIMCO (Kyung In Machinery Company) - 3 Lines
• King Sun Industry Company, Ltd. - 3 Lines
• Liang Chi Industry Company, Ltd. - 5 Lines
• Mesan Cooling Tower, Ltd. - 4 Lines
• Munters Corporation - 1 Line
• NIBA - 1 Line
• Nihon Spindle Manufacturing Company, Ltd. - 1 Line
• OTT Company Ltd. - 2 Lines
• Paharpur Cooling Tower Ltd. - 1 Line
• Reymsa Cooling Towers Inc. - 4 Lines
• Ryowo (Holding) Company Ltd. - 6 Lines
• Shanghai Baofeng Machinery Manufacturing Co., Ltd. - 1 Line
• Shanghai Liang Chi Cooling Equip. Co., Ltd. - 1 Line
• Shanghai Tyacht Cooling System Co., Ltd. - 1 Line
• Sinro Air-Conditioning (Fogang) Co. Ltd. - 3 Lines
• SPX (Marley) Cooling Technologies - 7 Lines
Continued>
CURRENT STD-201
41 PARTICIPATING OEM MANUFACTURERS
• Ta Shin F. R. P. Company Ltd. - 1 Line
• The Cooling Tower Company, Inc. - 1 Line
• Tower Tech, Inc. - 1 Line
• Truwater Cooling Towers Sdn Bhd - 3 Lines
• Wuxi Fangzhou Water Cooling Equip. Co., Ltd - 1 Line
• Yanti Ebara Air Conditioning Equipment Co., Ltd. - 2 Lines
• Zhejiang Jinling Refrigeration Engineering Co., Ltd. - 2 Lines
• Zhejiang Wanxiang Science & Technology Co., Ltd. - 1 Line
CURRENT STD-201
8 PARTICIPATING PRIVATE BRANDS
• AMCOT Cooling Tower Corporation - 1 Line
• AONE E&C Corporation, Ltd. - 2 Lines
• HVAC/R International, Inc. - 2 Lines
• Protec Cooling Towers, Inc. - 2 Lines
• RSD Cooling Towers, Inc. - 1 Line
• Shanghai Wanxiang Cooling Equipment Co., Ltd. - 2 Lines
• Thermal-Cell, sdn, bhd - 1 Line
• York (By Johnson Controls) - 3 Lines
NUMBER OF CTI CERTIFIED PRODUCT LINES
120
Through 12/31/2014
110
Private Brands
14
Manufacturer Brands
100
90
13
12
80
70
11
8
60
7
50
97
6
40
5
83
5
76
2
30
58
2
20
YEAR
2014
2013
2012
2011
2010
2009
2008
1991
2007
1990
2006
1989
2005
1988
43
25
2004
1987
2003
1986
2002
1985
2001
1984
2000
7
1999
6
1998
6
1997
6
1996
5
1995
5
1994
3
1993
3
21 19
16 16 16 19 18 18 19 19
12 14
1992
1
1983
0
50
37
32 34
10
64
CTI STD-201 CERTIFIED
TOWER CONFIGURATIONS AVAILABLE
12 Lines - Forced-draft, Counter-flow
25 Lines - Induced-draft, Counter-flow
1 Lines - Forced-draft, Cross-flow
44 Lines - Induced-draft, Cross-flow
29 Lines - Closed-circuit Cooling Tower
CURRENT STD-201
TOWER SELECTIONS AVAILABLE
• Diverse Variety of Construction Materials
Galvanized Steel, Stainless Steel, Fiberglass,
Polyethylene, PVC…
• Wide Choice of Nominal Cell Capacities
~ 1 l/s (16 gpm) to ~ 350 l/s (5,500 gpm)
NUMBER OF CTI CERTIFIED TOWER MODELS
20000
19000
18000
17000
16000
15000
14000
13000
12000
11000
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
Through 12/31/2014
Private Brands
YEAR
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
Manufacturer Brands
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
Application Submission
• General Description of Line
– Catalogs
– Preliminary Specification Sheets
– Outline Drawings
• Published Ratings
– Comprehensive Rating Tables
– Computer Selection Software
• Physical “Data of Record” for Each Model
– Spreadsheet in STD-201 Appendix E Format
– Zip Files with Supplementary Component Data
– Footnotes for Options and Accessories
Technical Review
• Comparison of Models for Consistency
– Geometric Similarity
– Physical Attributes
• Review of Published Ratings for Reasonableness
– Performance versus Operating Conditions
– Performance versus Physical Attributes Like Fan Laws
• Selection of Model(s) for Initial Qualification Test(s)
– Representative of Line
– Suitable for Comparison with Other Models
– Model Availability
Initial Qualification Test
• Thermal Performance Test per CTI ATC-105 Test Code
– Preparation per CTI FSP-156 Pretest Bulletin
– Equipment Operation per CTI ATC-105 Test Code
– Test Instrumentation per CTI ATC-105 Test Code
• Capability Calculated Using Published Ratings
– Compares Measured Performance with Predicted Performance
– 95% Minimum Capability Required to Pass Test
• Verification of Physical “Data of Record”
– Inspection of Tower Components
– Dimensional Comparisons
Approval Letter with Validation Number
• Approval Letter Issued After Final Review
– Payment of Initial Administrative Fees and Test Expenses
• Certification Validation Number Assigned
– Affixed to Each Tower Sold
– Displayed in Catalogs and Other Literature
(13)
Approval Letter with Validation Number
• Approval Letter Issued After Final Review
– Payment of Administrative Fees and Test Expenses
• Certification Validation Number Assigned
– Affixed to Each Tower Sold
– Displayed in Catalogs and Other Literature
• Manufacturers, Line Names and Product Summaries
Published in CTI Journal
• Manufacturers, Line Names, Model Numbers and Internet
Links Listed On CTI Web Site
Annual Reverification Tests for Follow Up
• Different Model Selected Each Year
• Test and Evaluation Identical to Initial Qualification Test
• Payment of Annual Administrative Fees and Test Expenses
• Test Failure Requires Additional Testing and Investigation
• Resolution of Complaints by Testing and Investigation
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
P & T Committee - Certification Task Group
• Balanced Committee per ANSI Guidelines
– Producers (Manufacturers) <50%, General Interest, Owner/Operator
• Reviews CTI STD-201 Every 5 Years or When Requested
• Revises CTI STD-201 As Needed
• Implements Expansion of STD-201 to New Areas
– Closed Circuit Cooling Towers (Added 1996)
– Evaporative Condensers (Added 2009)
STD-201 Current Developments
• New Certification Administrator for 2014 Onward
• New Certification Test Agencies for 2015 Onward
• Several Manufacturers In Process of Joining Program
• A Number of New Product Lines Under Final Review
• Several New Manufacturers Inquiries Received
• Several New Product Lines under Preliminary Review
• Cooperative Agreement with Eurovent (ECC) for Dual
CTI/ECC Certification In Place
+ ECC has Launched Closed-Circuit Program
Additional Certification Information
• CTI Web Site
http://www.cti.org/certification.shtml
• CTI Journal
• CTI Office in Houston, Texas USA
• CTI Certification Administrator – 2014 Onward
Michael Womack
C/O Clean Air Engineering
Email: [email protected]
Phone: 217-347-0842 (office)
217-690-9321 (mobile)