direct air cooling with titanium cooling coils flex coil a/s · direct air cooling with titanium...
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Flex coil a/s Knøsgårdvej 115 | DK-9440 Aabybro
Tel.: +45 98 24 49 99 | Fax: +45 98 24 49 90 e-mail: [email protected] | web: www.flexcoil.dk
Flex coil a/s Knøsgårdvej 115 | DK-9440 Aabybro
Tel.: +45 98 24 49 99 | Fax +45 98 24 49 90 e-mail: [email protected] | web: www.flexcoil.dk
Direct air cooling with titanium cooling coils
Titanium coils Fan Coils Flex coil a/s has delivered fan coils for the offshore industry for the past 15 years. The products delivered are condensers, evaporators, heating and cooling coils fitted with fans. The choice of materials for offshore installa-tions are vital for the equipment’s longevity. Fins Maritime environments are one of the reasons for short lifetime when inappropriate materials are used. When corrosion begins, the fins exhibit reduced heat transfer and thus a lower efficiency of the coil. Tests conducted in a salt spray chamber confirmed that a pretinned copper fin give superior resistance to corro-sion. Tubes The coil tubes in addition to being resistant to maritime atmosphere, must also be resistant to the medium inside the tubes. For condensers, evaporators and heating coils it is sufficient using pretinned copper or CuNi alloys. For seawater cooling coils however, it has been problematic finding materials. Previously, CuNi alloys were rec-ommended by experts, then SMO took over as the best material. We have trailed materials in a salt spray cham-ber and came to the conclusion that Titanium is the most resistant material. Casing The casing and the fan coil will also be exposed to a maritime atmos-phere, therefore we use corrosion resistant steel with extra strengthening in the most exposed points. Fans/motors When selecting fans/motors we use a special software to design and ensure good quality and also to optimize the fan selection. Zone definition, temperature and type of protection will dictate the type of motor as well as ma-terials for the fan unit. Fields of application Offshore Process industries Corrosive environments Exhaust gas/fumes
Flex Coil is one of the leading suppliers of Titanium heat exchangers
for harsh environments that demand extra durable products.
Resistance to corrosion for metallic material for seawater bearing pipes
The Graph below illustrates different ranges of application for metallic sea-water bearing pipes. The diagram refers to straight, smooth pipes and is schematic. This information was given at “The 7th Scandinavian Corrosion congress”
The front page of this brochure illustrates a seawater cooled titanium fan coil, used for cooling engine /generator
rooms and / or living quarters.
Titanium and seawater
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The following information is part of a research and development Report written by Wayne L. Adamson in 1976 at the Naval Ship Research and Development Centre. Marine fouling problems can be minimized in titanium condensers or heat exchangers by always operating at water velocities in excess of 4 ft/sec (1.2 m/sec) throughout the exchanger. High velocity 9 ft/sec (2.7 m/sec) water can kill small barnacles (1- to 2- mm size) already attached to a heat exchanger surface. The ability of higher velocity water to prevent attachment or actuality kill barnacles already attached is very dependent upon whether uniform velocity conditions exist throughout the heat exchanger. Tube obstructions, dead end areas, and similar configurations are points where marine life can establish colonies even when there is high velocity flow through the tubes. Heat exchanger design of waterside passages can, therefore, significantly increase or decrease the fouling characteristics of the system. Complete shutdown of the heat exchanger for an extended time period appears to be 100% effective for killing fouling organisms such as barnacles and for preventing initial attachment. How long animal organisms can live under stagnation conditions in a heat exchanger would have to be established by further study. The time period is probably a function of the oxygen content and the nutrient characteristics of the particular water. In view of the findings, it is recommended that chlorination should be considered for fouling protection in any titanium heat exchanger where seawater velocities of less than 4 ft/sec (1.2 m/sec) are anticipated in the tubes. For higher operating velocities, chlorination might also be considered as a possible deterrent to the gradual long-term build-up of fouling organisms in low velocity areas of the water boxes and tube sheets.
Flex coil a/s A subsidiary of EVAPCO, Inc.
Knøsgårdvej 115 ▪ 9440 Aabybro, Denmark Phone: +45 9824-4999 ▪ Fax: +45 9824-4990 ▪ E-mail: [email protected]
EVAPCO Asia/Pacific Headquarters
1159 Luoning Rd. Baoshan Industrial Zone Shanghai, P. R. China, Postal Code: 200949 Phone: (86) 21-6687-7786 Fax: (86) 21-6687-7008 E-mail: [email protected]
Evapco (Shanghai) Refrigeration Equipment Co., Ltd. 1159 Louning Rd., Baoshan Industrial Zone Shanghai, P.R. China, Postal Code: 200949 Phone: (86) 21-6687-7786 Fax: (86) 21-6687-7008 E-mail: [email protected]
Beijing EVAPCO Refrigeration Equipment Co., Ltd. Yan Qi Industrial Development District Huai Rou County Beijing, P.R. China, Postal Code: 101407 Phone: (86) 10 6166-7238 Fax: (86) 10 6166-7395 E-mail: [email protected]
EVAPCO Australia Pty Ltd..
A licensed manufacturer of Evapco, Inc. 34-42 Melbourne St., P.O. Box 436 Riverstone, N.S.W. Australia 2765 Phone: (61) 29 627-3322 Fax: (61) 29 627-1715 E-mail: [email protected]
EvapTech Asia Pacific Sdn. Bhd
A wholly owned subsidiary of EvapTech, Inc. IOI Business Park, 2/F Unit 21 Persiaran Puchong Jaya Selatan Bandar Puchong Jaya, 47170 Puchong, Selangor, Malaysia Phone: +(60-3) 8070 7255 Fax: +(60-3) 8070 5731 E-mail: evaptechinc.com
EVAPCO Europe, N.V. European Headquarters Industrieterrein Oost 4010 3700 Tongeren, Belgium Phone: (32) 12-395029 Fax: (32) 12-238527 E-mail: [email protected]
EVAPCO Europe, S.r.l.
Via Ciro Menotti 10 I-20017 Passirana di Rho, Milan, Italy Phone: (39) 02-939-9041 Fax: (39) 02-935-00840 E-mail: [email protected]
Flex Coil a/s
A subsidiary of Evapco, Inc. Knøsgårdvej 115 9440 Aabybro, Denmark Phone: (45) 9824-4999 Fax: (45) 9824-4990 E-mail: [email protected]
Flex coil Deutschland GmbH Borchersstr. 12 D-30559 Hannover Tel: +49 (511) 5248895 Fax: +49 (511) 5294987 [email protected]
EVAPCO Europe, GmbH
Bovert 22 D-40670 Meerbusch, Germany Phone: (49) 2159-69560 Fax: (49) 2159-695611 E-mail: [email protected]
EVAPCO S.A. (Pty.) Ltd.
A licensed manufacturer of Evapco, Inc. 18 Quality Road Isando 1600, Republic of South Africa Phone: (27) 11 392-6630 Fax: (27) 11-392-6615 E-mail: [email protected]
Tiba Engineering Industries Co.
A licensed manufacturer of Evapco, Inc. 5 Al Nasr Road St. Nasr City, Cairo, Egypt Phone: (20) 2-290-7483/ (20) 2-291-3610 Fax: (20) 2-404-4667/ (20) 2-290-0892 E-mail: [email protected]
EVAPCO East
5151 Allendale Lane Taneytown, MD 21787 USA Phone: 410-756-2600 Fax: 410-756-6450 E-mail: [email protected]
EVAPCO Midwest
1723 York Road Greenup, IL 62428 USA Phone: 217-923-3431 Fax: 217-923-3300 E-mail: [email protected]
EVAPCO West
1900 West Almond Avenue Madera, CA 93637 USA Phone: 559-673-2207 Fax: 559-673-2378 E-mail: [email protected]
EVAPCO Iowa
925 Quality Drive Lake View, IA 51450 USA Phone: 712-657-3223 Fax: 712-657-3226
EVAPCO Iowa
Sales & Engineering 1234 Brady Boulevard Owatonna, MN 55060 USA Phone: 507-446-8005 Fax: 507-446-8239 E-mail: [email protected]
Refrigeration Valves & Systems Corporation A wholly owned subsidiary of EVAPCO, Inc. 1520 Crosswind Dr. Bryan, TX 77808 USA Phone: 979-778-0095 Fax: 979-778-0030 E-mail: [email protected]
McCormack Coil Company, Inc.
A wholly owned subsidiary of EVAPCO, Inc. P.O. Box 1727 6333 S.W. Lakeview Boulevard Lake Oswego, OR 97035 USA Phone: 503-639-2137 Fax: 503-639-1800 E-mail: [email protected]
EvapTech, Inc.
A wholly owned subsidiary of EVAPCO, Inc. 8331 Nieman Road Lenexa, KS 66214 USA Phone: 913-322-5165 Fax: 913-322-5166 E-mail: [email protected]
Tower Components, Inc.
A wholly owned subsidiary of EVAPCO, Inc. 5960 US HWY 64E Ramseur, NC 27316 Phone: 336-824-2102 Fax: 336-824-2190 E-mail: [email protected]
EVAPCO Newton
701 East Jourdan Street Newton, IL 62448 USA Phone: 618-783-3433 Fax: 618-783-3499 E-mail: [email protected]
Evapco products are manufactured
worldwide
EVAPCO, Inc. World Headquarters
P.O. Box 1300 ▪ Westminster, MD 21158 USA
Phone: 410-756-2600 ▪ Fax: 410-756-6450 ▪ E-mail: [email protected]
Version: fc-130812-nt For further information please visit www.flexcoil.dk
EVAPCO North America EVAPCO Europe EVAPCO Asia/Pacific
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