ASHRAE Standard 22 2023
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ASHRAE Standard 22-2023 Method of Testing for Rating Liquid-Cooled Refrigerant Condensers (ANSI Approved)
Published By | Publication Date | Number of Pages |
ASHRAE | 2023 |
ASHRAE Standard 22 prescribes methods of testing the thermal performance and liquid-side pressure drop of liquid-cooled refrigerant condensers. The 2023 revision of Standard 22 updates references and makes minor editorial changes. This standard includes online access to the Uncertainty Analysis Methodology workbook (See Appendix A).
PDF Catalog
PDF Pages | PDF Title |
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1 | ANSI/ASHRAE Standard 22-2023 |
3 | Contents |
4 | Foreword 1. Purpose 2. Scope 3. Definitions 4. Required Test Results 4.1 In expressing test results, the following parameters shall be stated: |
5 | 4.2 For all parameters listed in Section 4.1, uncertainty shall be calculated as described in Section 7.4. 5. Test Methods 5.1 Standard Test Methods 5.2 Primary Test Method |
7 | 5.3 Confirming Test Methods |
8 | 6. Instruments and Test Apparatus 6.1 General 6.2 Temperature Measuring Instruments 6.3 Pressure Measuring Instruments 6.4 Electric Measuring Instruments 6.5 Refrigerant Flow Measuring Instruments |
9 | 6.6 Cooling Liquid Flow Measuring Instruments 6.7 Time Measurements. Time measurements shall be made with an apparatus whose minimum accuracy is within Ā±0.1% of the elapsed time. 6.8 Weight Measurements. Weight measurements shall be made with an apparatus whose minimum accuracy is within Ā±0.5% of the quantity measured. 7. Test Procedure 7.1 Apparatus Assembly 7.2 Operation and Limits 7.3 Computation of Results |
10 | 7.4 Uncertainty Analysis for Computed Results 8. References |
12 | Informative Appendix A: Uncertainty Analysis A1. Definitions A2. Methodology for Uncertainty Analysis |
13 | A3. Development of Uncertainty Calculations for Condenser Testing |
16 | A4. References |
17 | Informative Appendix B: Method to Compute the Enthalpy Difference of a Liquid Stream When an EoS-based Function Is not Available B1. Overview B2. Derivation of an Estimate for Enthalpy Difference |
18 | B3. Example |
19 | B4. Recommendations B5. References |
22 | Informative Appendix C: Method for Determining the Presence of Noncondensable Gases in Liquid-cooled Refrigerant Condensers |