Testing procedure for determining isothermal properties of the freight car body intended for the transport of perishable freights in the absence of specialized climate chamber
https://doi.org/10.21780/2223-9731-2020-79-3-171-179
Abstract
According to the Rules for the transport of perishable freights by rail, isothermal vehicles must comply with the provisions of the Agreement on the international transport of perishable foodstuffs and on special vehicles intended for this transport (ATP). The article proposed a technique for determining isothermal properties of the body of freight cars intended for the transportation of perishable freights by testing in the absence of a specialized climate chamber. The requirements of the ATP to the testing conditions are analyzed and the parameters that in the absence of a specialized climate chamber are impossible or difficult to perform are considered in detail. For each such parameter, a sequence of actions has been developed to bring the actual test conditions closer to the requirements of the ATP, and methods that allow adjusting the test results are justified taking into account the reduction of the specified parameters to the requirements of the ATP.
The proposed methodology of heat engineering tests of isothermal cars will allow:
• conduct heat engineering tests of thermos and refrigerated cars with high accuracy of obtaining the final result and the basic requirements of ATP;
• create a mechanism for control and examination of isothermal cars and containers under comparable conditions.
The methodology is of interest to organizations involved in the thermotechnical testing of isothermal cars, as well as for organizations entrusted with the functions of monitoring the thermotechnical parameters of isothermal cars.
About the Author
D. O. Davydov
Joint Stock Company “Research and Design Institute for Information Technology, Signalling and Telecommunications on Railway Transport” (JSC “NIIAS”)
Russian Federation
Russian Federation
Denis O. Davydov, Senior Researcher, Laboratory “Management of the transport of food and perishable freights”
Moscow, 109029
References
1. Rules for the transport of perishable freights by rail. Approved by order of the Ministry of Transport of Russia dated March 04, 2019 No. 66. URL: https://base.garant.ru/72265752/ (retrieved on 20.03.2020) (in Russ.).
2. Agreement on the international transport of perishable foodstuffs and on special vehicles intended for these transportations (ATP). URL: http://www.unece.org/fileadmin/DAM/trans/main/wp11/ATP_publication/2017/ATP_R_ECE_TRANS_271_WEB.pdf (retrieved on 22.03.2020) (in Russ.).
3. ISO 1496 2:2018. Series 1 freight containers — Specification and testing — Part 2: Thermal containers / ISO/TC 104/SC 2. [S. l.], 2018. 52 p.
4. Davydov D.O. Calculation method for the overall heattransfer coefficient of a technical transport superstructure for perishables in traffic. Vestnik of the Railway Research Institute, 2019, Vol. 78, no. 4, pp. 249 – 256. DOI: http://dx.doi.org/10.21780/2223-9731-2019-78-4-249-256.
5. Aisori — remote access to YaOD archives. URL: http://aisori.meteo.ru/ClimateR (retrieved on 22.03.2020) (in Russ.).
6. Davydov D.O. Algorithm for determining the estimated outdoor temperature to establish the conditions for the transport of perishable freights by rail. Vestnik transporta Povolzhya, 2019, no. 2, pp. 51 – 59.
7. SP 131.13330.2018 “SNiP 23-01–99* Construction climatology”. Approved by order of the Ministry of Construction of Russia dated November 28, 2018 No. 763/pr. Moscow, Standartinform Pabl., 2019. 114 p. (in Russ.).
8. Popova L. V. More on weather forecasts and their justification. Branch of FSBI Northern UGMS “Vologda TsGMS”. URL: http://vcgms.ru/eshhe-raz-o-prognozah-pogody-i-ih-opravdy-vaemosti (retrieved on 22.03.2020) (in Russ.).
9. ST SSFZhT TsT TsP 129–2002. Locomotives, motorcar and special rolling stock. Cabins, salons, office and domestic premises. Test methods for indicators of microclimate systems. Approved and entered into force by the order of the Ministry of Railways of Russia of June 25, 2003 No. P-634u. URL: https://files.stroyinf.ru/Data2/1/4293797/4293797670.htm (retrieved on 20.03.2020) (in Russ.).
10. Komarov N.S. Reference book of the refrigerators. Kiev, State publishing house of the technical literature of the USSR Pabl., 1953, 396 p.
11. Kitaev B. N. Thermal effects of solar radiation on cars. Moscow, Transzheldorizdat Publ., 1962, 32 p.
12. Sivkov S. I. Methods for calculating the characteristics of solar radiation. St. Petersburg, Gidrometeorologicheskoe izd-vo Publ., 1968, 231 p.
13. Muneer T. Solar Radiation and Daylight Models. Oxford, 2004. 392 p.
14. Thermal converters of resistance. Encyclopedia of industrial control system. URL: https://www.bookasutp.ru/chapter6_3_4.aspx (retrieved 22.03.2020) (in Russ.).
15. Samoshkin S. L., Meyster A. O., Yukhnevskiy M. A. Methodical issues of determination of the average heat transfer coefficient of the passenger car body. Vestnik of the Railway Research Institute, 2019, Vol. 78, no. 6, pp. 344 – 350. http://dx.doi.org/10.21780/2223-9731-2019-78-6-344-350.
16. Sheyndlin A. E. Radiative properties of solid materials. Moscow, Energiya Publ., 1974, 471 p.
17. Panferov V. N. Reference book for the transportation of perishable freights. Moscow, Tekhinform Publ., 2007, 308 p.
18. Golubev V. A., Evseev L. D. Application of sprayed polyurethane foams in construction. URL: https://www.xn--o1aaap.xn--p1ai/m/materiali/primenenie-napyljaemyh-penopoliuretanov-v-stroitelstve/ (retrieved on 01.03.2020) (in Russ.).
19. Vargaftik N. B. Reference book of the thermophysical properties of gases and liquids. 2 nd ed., ext. and reworked. Moscow, Nauka Publ., 1972, 720 p.
Review
For citations:
Davydov D.O. Testing procedure for determining isothermal properties of the freight car body intended for the transport of perishable freights in the absence of specialized climate chamber. RUSSIAN RAILWAY SCIENCE JOURNAL. 2020;79(3):171-179. (In Russ.) https://doi.org/10.21780/2223-9731-2020-79-3-171-179
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