ASHRAE Standard 30 2019

$54.17

ASHRAE Standard 30-2019 – Method of Testing Liquid Chillers (ANSI Approved)

Published By	Publication Date	Number of Pages
ASHRAE	2019	44

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Description

ASHRAE Standard 30 prescribes methods for obtaining performance test data of liquid-chilling or liquid-heating equipment using the vapor compression thermodynamic cycle and any type of compressor. Changes from the previous edition include the following:– Clarification of operating condition tolerance and stability criteria when redundant measurements are required– Reference to ANSI/ASHRAE Standard 41.8 for liquid mass flow rate measurements– Clarification that test instrument measurement resolution includes all parts of the measurement system, such as analog to digital conversion– Updates to Section 9 test report requirements to align with AHRI Standards 550/590 and 551/591

PDF Catalog

PDF Pages	PDF Title
1	ANSI/ASHRAE Standard 30-2019
3	CONTENTS
4	FOREWORD 1. PURPOSE 1.1 The purpose of this standard is to prescribe methods of testing to measure the thermal capacity, energy efficiency, and water pressure drop of packaged liquid-chiller equipment using a refrigerant vapor compression cycle. 1.2 This standard does not specify methods of establishing published ratings or performance tolerances. 2. SCOPE 2.1 This standard applies to liquid-chilling or liquid-heating packaged equipment using any type of compressor and using the following methods of heat rejection during the cooling cycle: 2.2 This standard includes packaged equipment provided in more than one assembly if the separated or remote assemblies are designed to be used together and are connected together during the test. 2.3 This standard does not include the following types of equipment: 2.4 This standard does not include testing of chillers in field installations. 2.5 This standard does not specify the test operating conditions. 2.6 This standard does not specify methods of performance ratings certification. 3. DEFINITIONS, ABBREVIATIONS, AND ACRONYMS
6	4. EQUIPMENT TYPES 4.1 This standard covers the following equipment types.
7	5. CALCULATIONS AND CONVERSIONS 5.1 Fluid Properties 5.2 Data Processing. Data-point measurements collected during the duration of the testing period shall be processed to calculate sample mean and sample standard deviation per the following equations. Calculate final performance metrics (capacity, eff… 5.3 Redundant Measurements 5.4 Performance
11	Figure 5-1 Included angle correlation for gradual expansion/contraction fittings. Table 5-1 Resistance Coefficient for Expansion and Reduction Fittings Table 5-2 Angle for Expansion and Reduction Fittings 5.5 Validation. Test results are validated by checking an energy balance and a voltage balance.
13	5.6 Conversions 5.7 Rounding and Significant Digits
14	6. TEST REQUIREMENTS Table 6-1 Requirements for Test Instrumentation 6.1 Tests shall report measurement values and calculated results in accordance with methods and procedures described in this method of test. 6.2 From a test perspective, it is best to maintain heat transfer surfaces by cleaning or maintaining proper liquid treatment to avoid highly fouled conditions and the associated efficiency loss. 6.3 Instrumentation. This section defines requirements for each type of measurement (temperature, flow, pressure, power). Instruments shall be selected, installed, operated, and maintained according to the requirements of Table 6-1. Further details a…
15	Table 6-2 Prediction Interval to Determine Range of Acceptable Accuracy
16	Figure 6-1 Sample of relative calibration evaluation data (% of reading). Figure 6-2 Sample of absolute calibration evaluation data.
17	Table 6-3 Temperature Measurement Requirements
18	Table 6-4 Criteria for Air Distribution and Control of Air Temperature
19	Figure 6-3 Typical air-sampling tree. Note: The 19 × 3 mm (0.75 × 0.50 in.) slots referenced in the figure are cut into the branches of the sampling tree and are located inside of the trunk of the sampling tree. They are placed to allow air to be p… Figure 6-4 Aspirating psychrometer.
20	Table 6-5 Straight Length in Flow Path
21	Figure 6-5 Examples of piezometer ring/manifold. Figure 6-6 Example of triple-tee piezometer ring/manifold.
22	6.4 Plan. A test plan shall document all requirements for conducting the test. This includes a list of the required full- load and part-load test points and associated operating conditions, including adjusted liquid temperature targets based on the r… 6.5 Operating Condition Tolerances. Operating condition tolerances are defined to control two characteristics. The first is deviation of the mean value relative to the target value. The second is the stability, which is defined in statistical terms a… 6.6 Corrections. The following corrections shall be applied to test targets or test results when applicable. 6.7 Validation
23	Table 6-6 Definition of Operating Condition Tolerances and Stability Criteria (Continued)
25	Table 6-7 Definition of Validity Tolerances Figure 6-7 Energy balance tolerance (Tol4) curve.
26	7. DATA TO BE RECORDED Table 7-1 Data to be Recorded During the Test 7.1 Primary Data. Table 7-1 summarizes the data to be recorded during the test for each of the data point samples. 7.2 Auxiliary Data. Table 7-2 summarizes the auxiliary data that shall be recorded for the test. 8. TEST PROCEDURES 8.1 Purpose. This section prescribes a method of testing for liquid-chilling and liquid-heating packages using the vapor compression cycle and to verify capacity and power requirements at a specific set of steady-state conditions.
27	Table 7-2 Auxiliary Data to Be Recorded Table 7-3 Optional Auxiliary Data to Be Recorded 8.2 Test Procedures. For each test point at a specific load and set of operating conditions, the test will measure capacity, input power, and liquid-side pressure drop. Capacity, a measurement of the heat added to or removed from the liquid as it pas…
28	8.3 Chiller Condenser Entering Air Temperature Measurement Procedure 8.4 Liquid Pressure Drop Measurement Procedure
29	Figure 8-1 Determination of measurement rectangles and required number of air sampler trees.
30	Figure 8-2 Typical test setup configurations. 8.5 Heating Capacity Test Procedure
32	9. REPORTING OF RESULTS 9.1 General 9.2 Data. For each test point, at a specific load and set of operating conditions, report the test time period and number of data-point measurements. Include the sample mean and sample standard deviation for each measurement value (temperature, flow,… 9.3 Calculations. Report the correction adjustment values Dpadj and DTadj, correction factors CFQ and CFh when applicable, and associated input data used for the correction calculations. Report the density, specific heat capacity, and mass flow value… 9.4 Results. Report the test results following calculations and procedures identified in Sections 5 and 8. Table 9-1 provides a generic summary.
33	Table 9-1 Results to be Reported 10. NOMENCLATURE 11. NORMATIVE REFERENCES
34	Table 10-1 Nomenclature
36	Table 10-2 Subscripts
37	INFORMATIVE APPENDIX A: INFORMATIVE REFERENCES
38	NORMATIVE APPENDIX B: MEASUREMENT POINTS Figure B-1 Electrically driven liquid-cooled chiller (with or without heat recovery) or heat pump.
39	Figure B-2 Electrically driven air-cooled chiller.
40	Figure B-3 Steam-turbine-driven liquid-cooled chiller.
41	Figure B-4 Engine-driven liquid-cooled chiller.