ASHRAE Standard 185.1 2020
$38.46
ASHRAE Standard 185.1-2020 — Method of Testing UV-C Lights for Use in Air-Handling Units or Air Ducts to Inactivate Airborne Microorganisms (ANSI Approved)
| Published By | Publication Date | Number of Pages |
| ASHRAE | 2020 | 22 |
ASHRAE Standard 185.1 establishes atest method to evaluate UV-C lamps for their ability to inactivate airbornemicroorganisms. It defines procedures for generating test bioaerosols and forsampling upstream and downstream of the UV-C lamp.In addition, the standard establishesperformance specifications for test equipment, quality assurance standards, andmethods of calculating and reporting results from the test data.This method of test may also be usedto test air-cleaning devices that do not use ultraviolet technology if thedevice being tested can be installed in the testing duct system as described.Test reports should note that results were from a modified test and include thespecific device tested and modifications made to the method.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | ANSI/ASHRAE Standard 185.1-2020 |
| 3 | CONTENTS |
| 4 | 1. PURPOSE 2. SCOPE 2.1 This standard describes a method of laboratory testing to measure the performance of UV-C lights used in general ventilating systems. 2.2 The method of test measures the performance of UV-C lights to inactivate selected indicator microorganisms in the airstream. The standard defines procedures for generating the bioaerosols required for conducting the test. It also provides a metho… 2.3 This standard also establishes performance specifications for the equipment required to conduct the tests, defines methods of calculating and reporting results obtained from the test data, and establishes a reporting system to be applied to UV-C … |
| 5 | 3. DEFINITIONS 3.1 Definitions. Terms specific to the use of this standard are defined below. Where definitions for a term are not provided, common usage shall apply. 4. TEST APPARATUS AND PROCEDURES 4.1 Test Duct. The test duct shall comply with the requirements of ANSI/ASHRAE Standard 52.2, Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size,1 except as noted in this section. The following items ar… |
| 6 | 4.2 Installation of UV-C Device. Installation of the UV-C device, and configuration of the lamp assembly within the device, shall be as designated by the manufacturer or equipment provider. The burn-in time for lamps shall be 100 hours 2. |
| 7 | 4.3 Installation of Bioaerosol Sampler. At least one bioaerosol sampler shall be installed upstream from the UV light after the first mixing baffle and before the upstream light baffle, and one collection device shall be installed downstream from the… 4.4 Mandatory and Discretionary Requirements. Critical dimensions and arrangements of the test apparatus are shown in Figure 1. All dimensions shown are mandatory unless otherwise indicated. Either SI or I-P dimensions are acceptable for any element … 5. APPARATUS QUALIFICATION TESTING 5.1 Apparatus Qualification Tests. Apparatus qualification tests shall verify quantitatively that the test rig and sampling procedures are capable of providing reliable bioaerosol measurements. Table 1 shows system qualification measurement requireme… 5.2 Velocity Uniformity in the Test Duct. The velocity uniformity test shall comply with ANSI/ ASHRAE Standard 52.21 and shall be performed at an air velocity rate of 2.54 m/s (500 fpm). 5.3 Bioaerosol Concentration Uniformity in the Test Duct. Bioaerosol uniformity shall be conducted per the instructions for the concentration uniformity test in Standard 52.2 1 using an inert tracer particle. Particle concentrations shall be measured… |
| 8 | 5.4 Inert Downstream Mixing of Aerosol. This test shall be performed per the instructions for the downstream mixing test specified in Standard 52.2 1, Section 5. Data for particles above 5 µm may be ignored in the calculations, as the bioaerosols us… 5.5 100% Efficiency Test. A bioaerosol efficiency test using either acceptable organism shall be run using a HEPA or ULPA filter as the test device to ensure that the test duct and sampling system are capable of providing a >99% efficiency measuremen… 5.6 Duct Leakage Test. A duct leakage test shall be conducted per Standard 52.2 1, Section 5, with the exception that the test acceptability level will be determined based on anticipated duct pressure during actual testing. The duct pressure shall be… 5.7 No-Light Control Test. A lights-off test shall be performed for each test device to confirm any bioaerosol baseline losses within the test duct. If the device blocks a substantial portion of the duct cross section, a test without a test device in… 5.8 OPC Zero Count Test. This shall be performed per Standard 52.2 1, Section 5. 5.9 OPC Sizing Accuracy Test. This shall be performed per Standard 52.2 1, Section 5. 6. BIOAEROSOL TESTING 6.1 Bioaerosols |
| 9 | 6.2 Test Duct Flow Measurement. Volumetric measurement flow measurements shall be made by means of ASME long-radius flow nozzles (Figure 2) with static taps as shown in Figures 2 and 3 and located as shown in Figure 1. The temperature, absolute press… 6.3 Experimental Protocol. Three repeat experiments shall be conducted with UV-C lights operating, and three repeat experiments shall be conducted without UV-C lights operating to verify that there is minimal loss of bioaerosol within the test duct (… 7. DETERMINATION OF PERFORMANCE 7.1 Correction for No-Light Transmission Rate. There is also a potential bias in the bioaerosol measurements if the test duct and rig cause a change in the number of culturable organisms independent of the presence of a UV-C device. For this reason, … |
| 11 | 8. REPORTING RESULTS 8.1 Outline. The summary section of the performance report shall include the following information: 9. NORMATIVE REFERENCES |
| 12 | INFORMATIVE APPENDIX A: TEST ORGANISM |
| 13 | INFORMATIVE APPENDIX B: LIMITATIONS |
| 14 | INFORMATIVE APPENDIX C: SAFETY |
| 15 | INFORMATIVE APPENDIX D: ENVIRONMENTAL CONSIDERATIONS |
| 16 | INFORMATIVE APPENDIX E: MICROORGANISM SUSCEPTIBILITY TO UV-C RADIATION |
| 17 | INFORMATIVE APPENDIX F: TECHNICAL ISSUES REGARDING AEROSOL |
| 18 | INFORMATIVE APPENDIX G: DOSAGE CALCULATION |
| 19 | INFORMATIVE APPENDIX H: INFORMATIVE REFERENCES |
| 20 | INFORMATIVE APPENDIX I: ADDENDA DESCRIPTION AND INFORMATION |
