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ASHRAE 164.1 08:2008 Edition

ASHRAE 164.1 08:2008 Edition

$21.13

ASHRAE Standard 164.1-2008 Method of Test for Residential Central-System Humidifiers (ANSI/ASHRAE Approved)

Published By Publication Date Number of Pages
ASHRAE 2008 16
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4 FOREWORD
FOREWORD
1. PURPOSE
1. PURPOSE
2. SCOPE
2. SCOPE
2.1 The scope of this standard covers a method of test for the humidification rate of central-system residential humidifiers intended for use with forced warm air heating and/or cooling systems.
2.1 The scope of this standard covers a method of test for the humidification rate of central-system residential humidifiers intended for use with forced warm air heating and/or cooling systems.
2.2 This method of test describes the test apparatus, conduct of the test, and information to be recorded.
2.2 This method of test describes the test apparatus, conduct of the test, and information to be recorded.
2.3 Tests covered include methods for measuring electrical power input, water flow rate, water temperature, and water pressure to the test humidifier. Also included are airflow rate, static pressure, temperature, and relative humidity entering and ma…
2.3 Tests covered include methods for measuring electrical power input, water flow rate, water temperature, and water pressure to the test humidifier. Also included are airflow rate, static pressure, temperature, and relative humidity entering and ma…
2.4 Information resulting from the application of this method of test is intended for use by manufacturers, specifiers, installers, and users of central-system residential humidifiers.
2.4 Information resulting from the application of this method of test is intended for use by manufacturers, specifiers, installers, and users of central-system residential humidifiers.
2.5 This method of test does not apply to self-contained humidifiers, portable humidifiers, or humidifiers for commercial and industrial applications.
2.5 This method of test does not apply to self-contained humidifiers, portable humidifiers, or humidifiers for commercial and industrial applications.
3. DEFINITIONS
3. DEFINITIONS
4. SYMBOLS AND SUBSCRIPTS
4. SYMBOLS AND SUBSCRIPTS
5 4.1 Subscripts
4.1 Subscripts
5. UNITS OF MEASUREMENT
5. UNITS OF MEASUREMENT
5.1 Systems of Units. The International System of Units (le Systeme International d’Unites)2 (SI) is employed in this standard. Values shall be based on the National Institute of Standards and Technology (NIST) values which, in turn, are based on the…
5.1 Systems of Units. The International System of Units (le Systeme International d’Unites)2 (SI) is employed in this standard. Values shall be based on the National Institute of Standards and Technology (NIST) values which, in turn, are based on the…
5.2 Dimensionless Groups. Various dimensionless quantities appear in the text. Any consistent system of units may be employed to evaluate these quantities unless a numerical factor is included, in which case units shall be as specified.
5.2 Dimensionless Groups. Various dimensionless quantities appear in the text. Any consistent system of units may be employed to evaluate these quantities unless a numerical factor is included, in which case units shall be as specified.
6. INSTRUMENTS AND METHODS OF MEASUREMENT
6. INSTRUMENTS AND METHODS OF MEASUREMENT
6.1 Accuracy. The specifications for instruments and methods of measurement include accuracy requirements. Calibration procedures shall be employed to minimize systematic errors.
6.1 Accuracy. The specifications for instruments and methods of measurement include accuracy requirements. Calibration procedures shall be employed to minimize systematic errors.
6.2 Pressure. Pressure at a point shall be measured on an indicator, such as a manometer, a transducer, or an oil-filled gauge. The instrument that is selected for a particular measurement shall meet the requirements of this standard.
6.2 Pressure. Pressure at a point shall be measured on an indicator, such as a manometer, a transducer, or an oil-filled gauge. The instrument that is selected for a particular measurement shall meet the requirements of this standard.
6 6.3 Airflow Rate. The preferred method for airflow rate utilizes standard measurements of pressure differential across flow nozzles. Airflow measuring methods that utilize meters or traverses other than flow nozzles may be used if the error introduce…
6.3 Airflow Rate. The preferred method for airflow rate utilizes standard measurements of pressure differential across flow nozzles. Airflow measuring methods that utilize meters or traverses other than flow nozzles may be used if the error introduce…
7 6.4 Power
6.4 Power
6.5 Water Flow
6.5 Water Flow
6.6 Air Density. Air density shall be calculated from measurements of wet-bulb temperature, dry-bulb temperature, and atmospheric pressure. Other parameters may be measured and used for this calculation if the maximum error in the calculated density …
6.6 Air Density. Air density shall be calculated from measurements of wet-bulb temperature, dry-bulb temperature, and atmospheric pressure. Other parameters may be measured and used for this calculation if the maximum error in the calculated density …
8 7. EQUIPMENT AND SETUP
7. EQUIPMENT AND SETUP
7.1 Setup. The suggested setup of the testing equipment is illustrated in Figure 5.
7.1 Setup. The suggested setup of the testing equipment is illustrated in Figure 5.
7.2 Air Volume Measuring Facilities for Air Distribution. Accurate, precise measurement of air volume is necessary to the testing of humidifiers that are part of an air distribution system. The humidifier itself exerts no control over the air volume …
7.2 Air Volume Measuring Facilities for Air Distribution. Accurate, precise measurement of air volume is necessary to the testing of humidifiers that are part of an air distribution system. The humidifier itself exerts no control over the air volume …
10 7.3 Air Treatment Facilities. Each test facility shall be provided with air treating equipment to maintain the prescribed conditions of temperature, humidity, and pressure of the air entering the humidifier test section.
7.3 Air Treatment Facilities. Each test facility shall be provided with air treating equipment to maintain the prescribed conditions of temperature, humidity, and pressure of the air entering the humidifier test section.
7.4 Temperature-Measuring Facilities. Air temperature measurements in ducts and fluid temperature measurements within conduits shall be made in accordance with the applicable provisions of ANSI/ASHRAE Standard 41.1, Standard Method for Temperature Me…
7.4 Temperature-Measuring Facilities. Air temperature measurements in ducts and fluid temperature measurements within conduits shall be made in accordance with the applicable provisions of ANSI/ASHRAE Standard 41.1, Standard Method for Temperature Me…
7.5 Water-Measuring Apparatus. Means shall be provided to measure the amount of water evaporated by the humidifier under test, as prescribed in Section 6.5.
7.5 Water-Measuring Apparatus. Means shall be provided to measure the amount of water evaporated by the humidifier under test, as prescribed in Section 6.5.
7.6 Humidifier Test Sections
7.6 Humidifier Test Sections
8. OBSERVATIONS AND CONDUCT OF TEST
8. OBSERVATIONS AND CONDUCT OF TEST
8.1 Test Methods. The test methods described are:
8.1 Test Methods. The test methods described are:
8.2 Test Requirements. See Figure 5 for the location of planes.
8.2 Test Requirements. See Figure 5 for the location of planes.
12 8.3 Performance of Test. The humidifier to be tested shall be installed in the appropriate test section as described in Section 7 and this section. Data required for the test shall be attained.
8.3 Performance of Test. The humidifier to be tested shall be installed in the appropriate test section as described in Section 7 and this section. Data required for the test shall be attained.
9. CALCULATIONS
9. CALCULATIONS
9.1 Calibration Correction. Calibration corrections, when required, shall be applied to individual readings before averaging or other calculations. Calibration corrections are not required if the correction is smaller than one half the maximum allowa…
9.1 Calibration Correction. Calibration corrections, when required, shall be applied to individual readings before averaging or other calculations. Calibration corrections are not required if the correction is smaller than one half the maximum allowa…
9.2 Airflow Rate. The airflow rate shall be calculated from the pressure differential, DPN, measured across a single nozzle or a bank of multiple nozzles.
9.2 Airflow Rate. The airflow rate shall be calculated from the pressure differential, DPN, measured across a single nozzle or a bank of multiple nozzles.
14 10. REPORT AND RESULTS OF TEST
10. REPORT AND RESULTS OF TEST
10.1 Report. The report of a laboratory test shall include the objective of the test, the results, the test data, and descriptions of the humidification unit, including the test setup, and of the test instruments as outlined in Section 7. The test ba…
10.1 Report. The report of a laboratory test shall include the objective of the test, the results, the test data, and descriptions of the humidification unit, including the test setup, and of the test instruments as outlined in Section 7. The test ba…
11. NORMATIVE REFERENCES
11. NORMATIVE REFERENCES
APPENDIX A INFORMATIVE REFERENCES
APPENDIX A INFORMATIVE REFERENCES

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