ASTM International - ASTM D4778-05
Standard Test Method for Determination of Corrosion and Fouling Tendency of Cooling Water Under Heat Transfer Conditions
|Publication Date:||1 January 2005|
|ICS Code (Examination of physical properties of water):||13.060.60|
significance And Use:
Deposits on heat transfer surfaces reduce efficiency of the heat exchanger affected. A method for easily determining the corrosion and fouling tendency of a particular water under heat transfer... View More
Deposits on heat transfer surfaces reduce efficiency of the heat exchanger affected. A method for easily determining the corrosion and fouling tendency of a particular water under heat transfer conditions will allow the evaluation of changes in the various system variables such as heat flux, flow velocity, metallurgy, cycles-of-concentrat
Note-All pipe is threaded 1 in. (25 mm) PVC. Heater should be fused and grounded in accordance with local electrical codes.
FIG. 1 Test Apparatus and Parts List
|(1) test specimen|| (6) acrylic tube, 10 in. (25 cm) long by 1 in. (25 mm)|
|(2) tube fitting; nylon (no metal parts)||(7) Cartridge type heater (not shown)|
|(3) reduci ng bushing, PVC|
|(4) tee, 1 in. (25 mm) PVC|
| (5) tube fitting, 1 in. (25 mm) tube by 1 in.|
(25 mm) male pipe thread stainless steel
FIG. 2 Test Assembly and Parts ListView Less
1.1 This test method provides directions for fabricating and operating a test apparatus to simultaneously monitor the corrosion and fouling tendency of real and pilot cooling water systems under heat transfer conditions.
1.2 Interpretation of the results of this test method must be left to the investigator. Many variables are involved which may not be easily controlled or fully understood. Variations in design and operating conditions may produce results that are not comparable from unit to unit.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are provided for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.