ATP TEST STATION, INTERNATIONAL REFRIGERATED TRANSPORT ATP AGREEMENT, CONSEQUENCES ON THE ENVIRONMENT
In the last years the internationalization of commerce contributed to the important growth of the transport of the perishable foodstuffs both in national and international level. Worldwide there are about 1 million refrigerated road vehicles and 0.4 million refrigerated containers in use. The detailed specifications for the special equipment used for the transport of perishable foodstuffs is very important for the quality of transported perishable foodstuffs, energy saving and to avoid environment pollution. These regulations and criterions are prescribed in the international ATP Agreement.This special equipment is subject to ATP qualification tests for conformity with the standards prescribed by the ATP Agreement, at officially designated ATP test stations and have direct impact in the final quality of the transported goods and the safety of public and consumer health. This ATP Test Station has to be able to provide specific steady state conditions during ATP tests. In Greece two innovative isothermal chambers were recently (2001) constructed at Zografou Campus of the National Technical University of Athens and at Lavrion Technological Park. Both test stations have been certified according to the ISO 17025.Some of the alternatively proposed ATP testing procedures for checking of the in-service and second hand refrigerated transport equipment have failed in their conception and it is possible according to the choice of testing methods to come to incorrect results, concerning the actual effectiveness of the thermal insulation and the efficiency of the cooling appliances of the tested specimen. The consequences are, apart from the attestation of inefficient equipment with a quality deficit, endangering public health, an increase of the fuel consumption needed for the mechanically driven compressor of the cooling unit of the refrigerated transport equipment and also an increase of the CO2 emissions and the environmental pollution. This study analyses ATP testing procedures, investigates the impact on the environment and gives some proposals for improvement. Also a simulation model is introduced using a transient finite difference algorithm, developed for a modern ATP Test chamber and a typical specimen vehicle to be tested. Simulation results are compared to experimental measurements taken under real conditions by a data acquisition system.
Refrigerated transport ATP Agreement Insulation efficiency Insulation ageing,Environmental pollution CO2 emissions Pull-Down Test
K.CHATZIDAKIS S.CHATZIDAKIS
National Technical University of Athens Faculty of Mechanical Engineering - Thermal Section - ATP Laboratory 9 Heroon Polytechneiou Av., Athens, GR–157 73
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）