AHRI 1060 I-P-2014 Performance Rating of Airto- Air Exchangers for Energy Recovery Ventilation Equipment.pdf

1、 AHRI Standard 1060 (I-P) 2014 Standard for Performance Rating of Air-to-Air Exchangers for Energy Recovery Ventilation Equipment Price $10.00 (M) $20.00 (NM) Copyright 2014, by Air-Conditioning, Heating, and Refrigeration Institute Printed in U.S.A. Registered United States Patent and Trademark Off

2、ice IMPORTANT SAFETY DISCLAIMER AHRI does not set safety standards and does not certify or guarantee the safety of any products, components or systems designed, tested, rated, installed or operated in accordance with this standard/guideline. It is strongly recommended that products be designed, cons

3、tructed, assembled, installed and operated in accordance with nationally recognized safety standards and code requirements appropriate for products covered by this standard/guideline. AHRI uses its best efforts to develop standards/guidelines employing state-of-the-art and accepted industry practice

4、s. AHRI does not certify or guarantee that any tests conducted under its standards/guidelines will be non-hazardous or free from risk. Note: This standard supersedes AHRI Standard 1060-2013 (I-P). For SI ratings, see AHRI Standard 1061 (SI)-2014. AHRI CERTIFICATION PROGRAM PROVISIONS Scope of the Ce

5、rtification Program The certification program includes Air-to-Air Exchangers for use in Air-to-Air Energy Recovery Ventilation Equipment, rated at or above 50 scfm but below or equal to 5,000 scfm at AHRI Standard Rating Conditions. In addition, Air-to-Air Exchangers for use in Air-to-Air Energy Rec

6、overy Ventilation Equipment rated above 5,000 scfm are included if the participants basic model group(s) for those models include at least one model rated at or above 50 scfm but below or equal to 5,000 scfm. This certification program does not include heat exchangers joined by circulated heat trans

7、fer medium (run-around loop). Certified Ratings The following certification program ratings are verified by test: 1. Sensible Effectiveness at 100% Summer, 75% Summer, 100% Winter, and 75% Winter, % 2. Latent Effectiveness at 100% Summer, 75% Summer, 100% Winter, and 75% Winter, % 3. Pressure Drop a

8、t 100% airflow laboratory ambient conditions, in H2O 4. Exhaust Air Transfer Ratio (EATR) at three pressure differentials, 0.00 in H2O and two more within the scope of the program 5. Outdoor Air Correction Factor (OACF) at three pressure differentials, 0.00 in H2O and two more within the scope of th

9、e program TABLE OF CONTENTS SECTION PAGE Section 1. Purpose 1 Section 2. Scope . 1 Section 3. Definitions. 1 Section 4. Test Requirements 3 Section 5. Rating Requirements . 6 Section 6. Minimum Data Requirements for Published Ratings . 6 Section 7. Marking and Nameplate Data . 7 Section 8. Conforman

10、ce Conditions 8 TABLES Table 1. Standard Rating Conditions 4 Table 2. Multiples for Rated Airflow 7 FIGURES Figure 1. Scheme of Airflows for Exchangers . 2 APPENDICES Appendix A. References - Normative 9 Appendix B. References - Informative. 9 Appendix C. Calculation of Effectiveness - Normative . 1

11、0AHRI STANDARD 1060 (I-P)-2014 1 PERFORMANCE RATING OF AIR-TO-AIR EXCHANGERS FOR ENERGY RECOVERY VENTILATION EQUIPMENT Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establish for Air-to-Air Exchangers intended for use in Air-to-Air Energy Recovery Ventilation Equipment: definiti

12、ons; test requirements; rating requirements; minimum data requirements for Published Ratings; marking and nameplate data; and conformance conditions. 1.1.1 Intent. This standard is intended for the guidance of the industry, including manufacturers, designers, installers, contractors and users. 1.1.2

13、 Review and Amendment. This standard is subject to review and amendment as technology advances. Section 2. Scope 2.1 Scope. This standard applies to factory-made Air-to-Air Exchangers for use in Air-to-Air Energy Recovery Ventilation Equipment as defined in Section 3. 2.2 Exclusions. This standard d

14、oes not apply to the rating and testing of heat exchangers joined by circulated heat transfer medium (run-around loop). A run-around loop employs liquid-containing coils connected in a closed loop and placed in each of two or more airstreams. Section 3. Definitions All terms in this document will fo

15、llow the standard industry definitions in the ASHRAE Terminology website (https:/www.ashrae.org/resources-publications/free-resources/ashrae-terminology) unless otherwise defined in this section. 3.1 Air-to-Air Energy Recovery Ventilation Equipment (AAERVE). Energy recovery components and packaged e

16、nergy recovery ventilation units which employ Air-to-Air Exchangers to recover energy from exhaust air for the purpose of pre-conditioning outdoor air prior to supplying the conditioned air to the space, either directly or as part of an air-conditioning (to include air heating, air cooling, air circ

17、ulating, air cleaning, humidifying and dehumidifying) system. 3.2 Air-to-Air Exchanger (hereinafter, “Exchanger”). A device that transfers heat/energy from an exhaust airstream to a separated supply airstream. Air-to-Air Exchangers are also referred to as energy recovery components. 3.2.1 Heat Pipe

18、Heat Exchanger. A device employing tubes charged with a fluid for the purpose of transferring sensible energy from one airstream to another. Heat transfer takes place through the vaporization of the fluid exposed to the warmer airstream and condensation of the fluid in the cooler airstream. 3.2.2 Pl

19、ate Heat Exchanger. A device for the purpose of transferring energy (sensible or total) from one airstream to another with no moving parts. The design may incorporate parallel, cross or counter flow construction or a combination of these to achieve the energy transfer. 3.2.3 Rotary Heat Exchanger. A

20、 device incorporating a rotating cylinder or wheel for the purpose of transferring energy (sensible or total) from one airstream to the other. It incorporates heat transfer material, a drive mechanism, a casing or frame, and includes any seals which are provided to retard the bypassing and leakage o

21、f air from one airstream to the other. 3.3 Airflow. 3.3.1 Entering Supply Airflow (OA). The supply airstream (outdoor air) before passing through the exchanger, indicated in Figure 1 as Station 1. Sometimes referred to as the outdoor Airflow. 3.3.2 Leaving Supply Airflow (SA). The supply airstream (

22、outdoor air) after passing through the exchanger, AHRI STANDARD 1060 (I-P)2014_ 2 indicated in Figure 1 as Station 2. Sometimes referred to as the supply Airflow. 3.3.3 Entering Exhaust Airflow (RA). The exhaust airstream (indoor air) before passing through the exchanger, indicated in Figure 1 as St

23、ation 3. Sometimes referred to as the return Airflow. 3.3.4 Leaving Exhaust Airflow (EA). The exhaust airstream (indoor air) after passing through the exchanger, indicated in Figure 1 as Station 4. Sometimes referred to as the exhaust Airflow. Figure 1. Scheme of Airflows for Exchangers 3.4 Capacity

24、 Rate. The quantity of energy an airstream at a specific mass flow rate is able to absorb or release per unit time per unit change in temperature, humidity content, or enthalpy content. 3.5 Effectiveness. A ratio of the actual energy transfer (sensible, latent, or total) to the product of the minimu

25、m energy capacity rate and the maximum difference in temperature, humidity ratio, or enthalpy. The equation for determining Effectiveness is Equation C1 in Appendix C. Effectiveness is not adjusted to account for that portion of the psychrometric change in the Leaving Supply Airflow that is the resu

26、lt of leakage of Entering Exhaust Airflow rather than exchange of heat or moisture between the airstreams. 3.5.1 Sensible Effectiveness. The Effectiveness determined in Section 3.5 using only measured dry bulb temperature differences, specific heat capacities and mass airflow rates. 3.5.2 Latent Eff

27、ectiveness. The Effectiveness determined in Section 3.5 using only measured humidity ratios, heat of vaporization values, and mass airflow rates. 3.5.3 Total Effectiveness. The Effectiveness determined in Section 3.5 using only measured enthalpies and mass airflow rates. 3.5.4 Net Effectiveness. The

28、 Effectiveness adjusted to account for that portion of the psychrometric change in the Leaving Supply Airflow that is the result of leakage of Entering Exhaust Airflow rather than exchange of heat or moisture between the airstreams. The derivation of Net Effectiveness is given in Appendix C. 3.6 Exh

29、aust Air Transfer Ratio (EATR). The tracer gas concentration difference between the Leaving Supply Airflow and the Entering Supply Airflow divided by the tracer gas concentration difference between the Entering Exhaust Airflow and the Entering Supply Airflow at the 100% rated Airflows, expressed as

30、a percentage. The equation for determining EATR is Equation C2 in Appendix C. 3.7 Net Supply Airflow. That portion of the Leaving Supply Airflow that originated as Entering Supply Airflow. The Net Supply Airflow is determined by subtracting air transferred from the exhaust side of the exchanger from

31、 the gross Airflow measured at the Supply Airflow leaving the exchanger and is given by the equation: AHRI STANDARD 1060 (I-P)-2014 3 Net Supply Airflow = Leaving Supply Airflow (1 - EATR) 1 3.8 Outdoor Air Correction Factor (OACF). The ratio of the Entering Supply Airflow to the measured (gross) Le

32、aving Supply Airflow. 3.9 Pressure Differential. The difference in static pressure between the Leaving Supply Airflow and the Entering Exhaust Airflow. 3.10 Pressure Drop. The difference in static pressure between the Entering Supply Airflow and the Leaving Supply Airflow. 3.11 Published Rating. A s

33、tatement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a unit may be chosen for its application. These values apply to all exchangers for use in Energy Recovery Ventilation Equipment of like size and type (identification) produced by the same m

34、anufacturer. The term Published Rating includes the rating of all performance characteristics shown on the unit or published in specifications, advertising or other literature controlled by the manufacturer, at stated Rating Conditions. 3.11.1 Application Rating. A rating based on tests performed at

35、 application Rating Conditions (other than Standard Rating Conditions). 3.11.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.12 Rating Conditions. Any set of operating conditions under which a single level of performance results, and which cause only that level

36、of performance to occur. 3.12.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for performance characteristics. 3.13 “Shall” or “Should.” “Shall” or “should” shall be interpreted as follows: 3.13.1 Shall. Where “shall” or “shall not” is used for a provision specified,

37、that provision is mandatory if compliance with the standard is claimed. 3.13.2 Should. “Should” is used to indicate provisions which are not mandatory but which are desirable as good practice. 3.14 Standard Air. Air weighing 0.075 lb/ft3which approximates dry air at 70F and at a barometric pressure

38、of 29.92 in Hg. 3.15 Station. For each of the Airflows defined in Section 3.3 and shown in Figure 1, the station is the location in the test apparatus at which conditions such as temperature, humidity, pressure, or Airflow are measured. These locations are identified as “Station 1”, “Station 2”, “St

39、ation 3” and “Station 4”. Section 4. Test Requirements 4.1 Test Requirements. All Standard Ratings shall be verified by tests conducted in accordance with ANSI/ASHRAE Standard 84 at the Standard Rating Conditions in Table 1, except where modified by this standard. 4.2 Test Set-up. 4.2.1 Heat Pipe He

40、at Exchangers. For the purpose of rating, the tilt angle of Heat Pipe Heat Exchangers shall be as specified by the manufacturer. The tilt angle may change between heating and cooling conditions provided that an automatic mechanism to do so is provided by the manufacturer. 4.2.2 Plate Heat Exchangers

41、. For the purpose of rating, ensure that the orientation of the Plate Heat Exchanger is as specified by the manufacturer. 4.2.3 Rotary Heat Exchangers. AHRI STANDARD 1060 (I-P)2014_ 4 4.2.3.1 General. For the purpose of rating, drive motors used in Rotary Heat Exchangers shall be placed in the airst

42、ream as specified by the manufacturer. All Standard Ratings, under both heating and cooling conditions, shall be measured with the drive motor in the same location. In addition, the Rotary Heat Exchanger shall rotate within 10% of the speed or speed range specified by the manufacturer (if provided).

43、 Table 1. Standard Rating Conditions Item Conditions Tolerances Heating Cooling All Readings During Test Average of Readings 1. Entering Supply Airflow temperature a. Dry-bulb, F b. Wet-bulb, F 35 33 95 78 1.0 0.6 +/- 0.5 +/- 0.3 2. Entering Exhaust Airflow temperature a. Dry-bulb, F b. Wet-bulb, F

44、70 58 75 63 1.0 0.6 +/- 0.5 +/- 0.3 3. Leaving Supply Airflow, scfm 100% of the rated Airflow(s) 75% of the rated Airflow(s) See Section 4.3 4. Entering Exhaust Airflow (Return Air), scfm Same rate as Leaving Supply Airflow1See Section 4.3 5. Pressure Differential, Leaving Supply Airflow static pres

45、sure minus Entering Exhaust (return) Airflow static pressure, for Effectiveness tests, in H2O 0.00 See Section 4.3 6. Pressure Differential, Leaving Supply Airflow static pressure minus Entering Exhaust (return) Airflow static pressure, for Outdoor Air Correction Factor tests and tracer gas tests of

46、 Exhaust Air Transfer Ratio, in H2O (1) 0.00 and (2) manufacturers choice of two or more of the following: -5.00, -3.00, -1.00, -0.50, 0.50, 1.00, 3.00, 5.00 See Section 4.3 Note: 1. Adjustments to balance the Airflows shall be made at the Standard Rating Conditions (i.e., temperatures), just prior

47、to data acquisition. 4.2.3.2 Adjustable Purge. For the purpose of rating, if an adjustable purge is provided, it shall be set at the manufacturers specified purge angle or setting. The purge angle or setting may vary between different tests; however, Standard Ratings of Effectiveness shall be measur

48、ed using the same purge angle or setting used when measuring Standard Ratings of Exhaust Air Transfer Ratio and Outdoor Air Correction Factor at the required zero pressure differential condition (see Table 1). 4.2.4 Laboratory Ambient Conditions. Except in facilities in which the exchanger is locate

49、d in one or both of the indoor and outdoor condition chambers, laboratory ambient conditions shall be maintained within the limits of 60F and 80F dry bulb. The room ambient temperature shall be measured within 6 ft of the sample and at the height of the sample. 4.3 Testing Tolerances. For the test to be valid, it shall meet all the requirements of this se