Marley / NC Class Stainless CoolingTower / Specifications: Base | 5 |
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Specifications |
| Specification Value |
2.0Thermal Performance and Efficiency:
2.1 | The tower shall be capable of cooling | ■ CTI Certification means that the tower |
| _____ m3/h of water from ____ °C to | has been tested under operating condi- |
| _____ °C at a design entering air wet- | tions and found to perform as rated by |
| bulb temperature of _____ C and its | the manufacturer under those circum- |
| thermal rating shall be Certified by the | stances. It assures the buyer that the |
| Cooling Technology Institute. | tower is not intentionally or inadvertent- |
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| ly undersized by the manufacturer. |
2.2The tower shall be capable of a mini-
| mum _____ m3/h/kilowatt efficiency per | ■ The minimum efficiency per ASHRAE |
| ASHRAE Standard 90.1. | Standard 90.1 for induced draft open cooling towers applied to comfort |
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| cooling is 8.68 kW @ 35/29.5/24. There are no efficiency requirements for |
2.3 | CTI Certification notwithstanding, | |
| the cooling tower manufacturer shall | require it by specifying a higher ASHRAE Standard 90.1 m3/h/kilowatt. |
| guarantee that the tower supplied | ■ CTI certification alone is not sufficient to assure you that the tower |
| will meet the specified performance | |
| conditions when the tower is installed | will perform satisfactorily in your situation. Certification is established |
| according to plan. If, because of a | under relatively controlled conditions, and towers seldom operate |
| suspected thermal performance defi- | under such ideal circumstances. They are affected by nearby structures, |
| ciency, the owner chooses to conduct | machinery, enclosures, effluent from other towers, etc. Responsible and |
| an | knowledgeable bidders will take such |
| under the supervision of a qualified, | ation in selecting the |
| disinterested third party in accordance | specification that the designer/manufacturer guarantee this “real world” |
| with CTI or ASME standards during the | performance. Any reluctance on the part of the bidder should cause you |
| first year of operation; and if the tower | some concern. |
| fails to perform within the limits of |
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| test tolerance; then the cooling tower |
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| manufacturer will pay for the cost of |
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| the test and will make such corrections |
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| as are appropriate and agreeable to the |
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| owner to compensate for the perfor- |
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| mance deficiency. |
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3.0Warranty:
3.1The entire tower, including struc- ture, casing, basins, decking, fan(s), motor(s), and all mechanical drive com- ponents (including belts, if used) shall be warranted against failure due to defects in materials and workmanship for a period of five (5) years from the date of shipment to the job. Towers not covered by a warranty of this scope will not be accepted.
4.0 | Design Loading: |
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4.1 | The tower structure, anchorage and all | ■ It is important to understand the distinction between structure and |
| its components shall be designed by | anchorage. Specifying that only the anchorage meet these require- |
| licensed structural engineers per the | ments means the tower can become |
| International Building Code to with- | remain attached to the foundation. Specifying structure will require the |
| stand a wind load of 1.44k/Pa, as well | tower to remain operational. |
| as a .3g seismic load. The fan deck | The indicated design values are the minimum allowables under accept- |
| and hot water basin covers shall be | ed design standards. They give you assurance that the tower can be |
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