1、 ASABE/ISO 14269-2:1997 (SEP2006) (R2017) Tractors and self-propelled machines for agriculture and forestry Operator enclosure environment Part 2: Heating, ventilation and air-conditioning test method and performance American Society of Agricultural and Biological Engineers ASABE is a professional a
2、nd technical organization, of members worldwide, who are dedicated to advancement of engineering applicable to agricultural, food, and biological systems. ASABE Standards are consensus documents developed and adopted by the American Society of Agricultural and Biological Engineers to meet standardiz
3、ation needs within the scope of the Society; principally agricultural field equipment, farmstead equipment, structures, soil and water resource management, turf and landscape equipment, forest engineering, food and process engineering, electric power applications, plant and animal environment, and w
4、aste management. NOTE: ASABE Standards, Engineering Practices, and Data are informational and advisory only. Their use by anyone engaged in industry or trade is entirely voluntary. The ASABE assumes no responsibility for results attributable to the application of ASABE Standards, Engineering Practic
5、es, and Data. Conformity does not ensure compliance with applicable ordinances, laws and regulations. Prospective users are responsible for protecting themselves against liability for infringement of patents. ASABE Standards, Engineering Practices, and Data initially approved prior to the society na
6、me change in July of 2005 are designated as “ASAE“, regardless of the revision approval date. Newly developed Standards, Engineering Practices and Data approved after July of 2005 are designated as “ASABE“. Standards designated as “ANSI“ are American National Standards as are all ISO adoptions publi
7、shed by ASABE. Adoption as an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by ASABE. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement
8、 has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. CAUTION NOTICE: A
9、SABE and ANSI standards may be revised or withdrawn at any time. Additionally, procedures of ASABE require that action be taken periodically to reaffirm, revise, or withdraw each standard. Copyright American Society of Agricultural and Biological Engineers. All rights reserved. ASABE, 2950 Niles Roa
10、d, St. Joseph, Ml 49085-9659, USA, phone 269-429-0300, fax 269-429-3852, hqasabe.org S T A N D A R D ASABE/ISO 14269-2:1997 SEP2006 (R2017) Copyright American Society of Agricultural and Biological Engineers 1 ASABE/ISO 14269-2:1997 SEP2006 (R2017) Approved October 2006; reaffirmed January 2017 as a
11、n American National Standard Tractors and self-propelled machines for agriculture and forestry Operator enclosure environment Part 2: Heating, ventilation and air-conditioning test method and performance These materials are subject to copyright claims of ISO and ASABE. No part of this publication ma
12、y be reproduced in any form, including an electronic retrieval system, without the prior written permission of ASABE. All requests pertaining to ASABE/ISO 14269-2:1997 SEP2006 standard should be submitted to ASABE. This standard was reviewed for adoption by the ASABE Power and Machinery Agricultural
13、 Machinery-Common Tests Technical subcommittee, and has been formally approved by the Technical Committee. The adoption of this standard was made possible by the signing of 2004 SAE-ASABE copyright agreements, which gave ASABE a royalty-free license to publish in whole or in part SAE standard docume
14、nt J1503. Adopted and approved as an American National Standard October 2006; reaffirmed January 2012, January 2017. Keywords: Enclosure, Environment, Operator 0 Foreword 0.1 ASABE/ISO 14269-2:1997, Tractors and self-propelled machines for agriculture and forestry Operator enclosure environment Part
15、 2: Heating, ventilation and air-conditioning test method and performance, is an adoption without modification of the identically titled ISO standard ISO 14269-2:1997, Tractors and self-propelled machines for agriculture and forestry Operator enclosure environment Part 2: Heating, ventilation and ai
16、r-conditioning test method and performance. This ISO standard is a derivative of SAE J1503, Performance Test for Air-Conditioned, Heated, and Ventilated Off-Road Self-Propelled Work Machines. 0.2 ASABE/ISO 14269-2 specifies a uniform test method for measuring the contribution to operator environment
17、al temperature and humidity provided by an air-conditioning, heating and ventilation system operating in a specific ambient environment for tractors and self-propelled machines for agriculture and forestry. This method may not determine the complete climatic environment of the operator since this is
18、 also affected by heat load from sources other than those on the machine, for example solar heating. It is recommended that part 3 of ISO 14269 be used in conjunction with this part to determine more accurately the complete heat loading on the operator enclosure. Minimum performance levels for the m
19、achines operator enclosure air conditioning, heating and ventilation systems are established in this part. 0.3 Six normative references are listed in ISO 14269-2:1997. These references have been reviewed and accepted as part of the adoption of ASABE/ISO 14269-2:1997. 0.4 This standard has been appro
20、ved as an American National Standard by ANSI (American National Standard Institute). Text of ISO 14269-2:1997, Tractors and self-propelled machines for agriculture and forestry Operator enclosure environment Part 2: Heating, ventilation and air-conditioning test method and performance, follows. ASAB
21、E/ISO 14269-2:1997 SEP2006 (R2017) Copyright American Society of Agricultural and Biological Engineers 2 1 Scope This part of ISO 14269 specifies a uniform test method for measuring the contribution to operator environmental temperature and humidity provided by an air-conditioning, heating and venti
22、lation system operating in a specific ambient environment for tractors and self-propelled machines for agriculture and forestry. The method may not determine the complete climatic environment of the operator since this is also affected by heat load from sources other than those on the machine, for e
23、xample solar heating. It is recommended that part 3 of ISO 14269 be used in conjunction with this part to determine more accurately the complete heat loading on the operator enclosure. Minimum performance levels for the machines operator enclosure air conditioning, heating and ventilation systems ar
24、e established in this part. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 14269. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to a
25、greements based on this part of ISO 14269 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 2288:1997, Agricultural tractors and machines Engin
26、e test code Net power. ISO 5353:1995, Earth-moving machinery, and tractors and machinery for agriculture and forestry Seat index point. ISO 5721:1989, Tractors for agriculture Operators field of vision. ISO 14269-1:1997, Tractors and self-propelled machines for agriculture and forestry Operator encl
27、osure environment Part 1: Vocabulary. ISO 14269-4:1997, Tractors and self-propelled machines for agriculture and forestry Operator enclosure environment Part 4: Air filter element test method. ISO 14269-5:1997, Tractors and self-propelled machines for agriculture and forestry Operator enclosure envi
28、ronment Part 5: Pressurization system test method. 3 Definitions For the purposes of this part of ISO 14269, the definitions given in ISO 14269-1 apply, of which the following are particularly relevant. 3.1 effective temperature: Combination of relative humidity and temperature which can indicate th
29、e level of comfort perceived by the human body. ISO 14269-1:1997, definition 2.1 3.2 operator enclosure temperature chart: Diagram of the range of effective temperatures in which the operator environment within the operator enclosure is perceived as desirable. ISO 14269-1:1997, definition 2.2 NOTE:
30、See figure 1. 3.3 operator environment: Space surrounding the operator as defined by temperature and velocity measurement points. ISO 14269-1:1997, definition 2.3 NOTE: See figure 2. ASABE/ISO 14269-2:1997 SEP2006 (R2017) Copyright American Society of Agricultural and Biological Engineers 3 3.4 oper
31、ator enclosure: Part of the machine which completely surrounds the operator, preventing the free passage of external air, dust or other substances into the area around the operator. ISO 14269-1:1997, definition 2.4 3.5 air-conditioning system: System which lowers the effective temperature of the air
32、 within the operator enclosure. ISO 14269-1:1997, definition 2.5 3.6 heating system: System which raises the effective temperature of the air within the operator enclosure. ISO 14269-1:1997, definition 2.8 3.7 ventilation system: System which provides fresh air to, and maintains air circulation with
33、in, the operator enclosure. ISO 14269-1:1997, definition 2.11 4 Test equipment and instruments 4.1 Test enclosure, sufficiently large to contain the base machine with provisions to circulate conditioned air and to load the machines engine and transmission. 4.1.1 Field test conditions may be used. 4.
34、1.2 If it is not practical to test the base machine due to physical size limitations, the operator enclosure may be bench tested with the loads imposed by the base machine on the operator enclosure simulated. If this procedure is used, correlation with field data shall be established. 4.2 Temperatur
35、e measuring devices, with a measuring accuracy of 0,5C. 4.3 Pressure measuring devices, with a measuring accuracy of 2% of the observed values. 4.4 Device to measure wet bulb temperature, with a measuring accuracy of 0,5C of the observed values. 4.5 Device to measure operator enclosure pressurizatio
36、n, with a measuring accuracy of 10% of the observed values. 4.6 Device to measure rotational frequency (r.p.m.), with a measuring accuracy of 2% of the observed values. 4.7 Device to measure air velocity, with a measuring accuracy of 10% of the observed values. 4.8 Device to measure blower voltage a
37、nd clutch voltage, with a measuring accuracy of 2% of the observed values. 4.9 Device to measure time, with a measuring accuracy of 0,5 s of the observed values. 5 Measurement location See figure 2. The locations of the temperature and velocity measurement points are based on the seat index point de
38、scribed in ISO 5353. 5.1 The ambient air temperatures shall be measured at a location where the ambient air is not affected by the machine and at a height equivalent to the air intake height on the operator enclosure. 5.2 The operator enclosure pressurization shall be measured according to ISO 14269
39、-5. 5.3 Dry bulb temperatures shall be measured as close as is practical to positions 1 to 6 in figure 2. ASABE/ISO 14269-2:1997 SEP2006 (R2017) Copyright American Society of Agricultural and Biological Engineers 4 5.4 Wet bulb temperature shall be measured at position 6 in figure 2. 5.5 It is recom
40、mended that the air velocity at the eyes (position 7 of figure 2) be measured in accordance with ISO 5721. NOTE: If an alternative operator station position is available (for example, a reversible operator station), the alternate positions should also be tested with a comparable array of measurement
41、 locations. 6 Common minimum performance requirements 6.1 The operator enclosure should be capable of maintaining a minimum pressurization of 50 Pa throughout the test, as outlined in ISO 14269-5. Maximum pressurization shall not exceed 200 Pa. 6.2 Under all conditions of air-conditioning, heating o
42、r ventilation, a minimum of 43 m3/h of filtered fresh air shall be provided. 6.3 Under all conditions of air-conditioning, heating or ventilation, the temperatures measured in the operators environment shall be uniform within 5C. 6.4 Filtered fresh air shall be passed through a filter that is a mini
43、mum of 96% efficient using fine test dust and test procedure defined in ISO 14269-4. 6.5 It is recommended that a means be provided to limit the maximum air velocity at position 7 in figure 2 to 0,3 m/s. Adjustable diffusers may be used to redirect air. 7 Common test procedures 7.1 The test conditio
44、ns specified in 8.1, 9.1 and 10.1 shall be maintained throughout the duration of the respective test. 7.2 Record the temperatures as specified in 5.3 and 5.4 at intervals not greater than 5 min. 7.3 Dry bulb temperatures from all six locations shall be averaged for each reading interval. 7.4 The tes
45、t shall be considered terminated when either of the following conditions is fulfilled: a) the minimum temperature recorded in clause 7.3 does not vary by more than 0,5C in 15 min; or b) the test has run for 1 h. 7.5 The data obtained at the termination of the heating or air conditioning test shall b
46、e compared with the operator enclosure temperature chart shown in figure 1. 7.6 An operator may be present in the operator enclosure throughout the duration of the test. 8 Air-conditioning system test 8.1 Test conditions 8.1.1 The air-conditioning system shall be tested in the intended production co
47、nfiguration, adjusted within the manufacturers specifications. 8.1.2 The ambient conditions for moderate temperature and high humidity shall be: a) minimum dry bulb temperature: 32C; ASABE/ISO 14269-2:1997 SEP2006 (R2017) Copyright American Society of Agricultural and Biological Engineers 5 b) minim
48、um wet bulb temperature: 25C; c) maximum air velocity passing the machine from front to rear: 5 m/s. 8.1.3 The machine shall be operated at rated engine speed in a mode which will provide at least one half of the maximum rated net engine power. Net engine power shall be determined in accordance with
49、 ISO 2288. NOTE: Loading of the engine through the transmission is recommended. Engine loading is recommended only when the engine or component temperatures (such as transmission) influence the environment within the operator enclosure. 8.1.4 Prior to conducting tests on the air-conditioning system, the machine shall be operated as specified in 8.1.3 for one hour, to provide a preliminary, stabilizing heat soak period. Doors and windows shall be closed and other ventilation systems shall be turned of
