SECTION 15721N EVAPORATIVE COOLING SYSTEM

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USACE / NAVFAC / AFCESA

UFGS-15721N (September 1999)

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Preparing Activity: NAVFAC

Replacing without revision

NFGS of same number and date

UNIFIED FACILITIES GUIDE SPECIFICATIONS

References are in agreement with UMRL dated 23 June 2005

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SECTION 15721N

EVAPORATIVE COOLING SYSTEM

09/99

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NOTE: This guide specification covers the

requirements for evaporative coolers including roof

curbs on which they are mounted.

Comments and suggestions on this guide specification

are welcome and should be directed to the technical

proponent of the specification. A listing of

technical proponents, including their organization

designation and telephone number, is on the Internet.

Recommended changes to a UFGS should be submitted as

a Criteria Change Request (CCR).

Use of electronic communication is encouraged.

Brackets are used in the text to indicate designer

choices or locations where text must be supplied by

the designer.

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NOTE: The coolers covered in this specification are

intended for use in areas where climatic conditions

generally provide dry-bulb temperatures in excess of

29 degrees C 85 degrees F and concurrent wet-bulb

temperatures below 21 degrees C 70 degrees F.

Moderate success can be expected with wet-bulb

temperatures as high as 24 degrees C 76 degrees F;

however, for general practice, use of the coolers

with prevailing wet-bulb temperatures above 22

degrees C 72 degrees F is not recommended. Conform

to DOD 4270.1-M for the selection of evaporative

coolers.

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NOTE: The following information shall be shown on

the project drawings:

1. Dry-bulb temperature entering and leaving the

evaporator coolers.

SECTION 15721N

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