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SAE ARP 1523B Document Information:
Title
Air Mode Insulated Containers - Thermal Efficiency Requirements
SAE International
Publication Date:
Sep 1, 2000
Scope:
This SAE Aerospace Recommended Practice (ARP) delineates the
minimum operational requirements that will ensure that perishable
cargoes in insulated standard airborne containers are kept in prime
condition during the ground handling and air transportation cycle
for a maximum period of 36 h.
The term "perishable cargo" refers, for example, to dairy
produce, fruit, vegetables, flowers, frozen foods, meat, fish,
etc., requiring maintenance of specific temperature ranges during
door-to-door transportation involving air transport.
The overall temperature range for perishable commodities may be
anywhere between +20 °C (+68 °F) and -25 °C (-13 °F) during the
transport cycle.
During this period of door-to-door transportation, the container
may be subjected to outside ambient temperature with extremes of
+45 °C (+113 °F) and -50 °C (-58 °F) and a relative humidity of up
to 100%.
For design purposes - and to allow for temperature drops and
rises occurring between origin and destination in the air transport
cycle - the container shall perform its protective function within
an outside temperature variation, ?T, of 53 units of temperature
interval Celsius (95 units of temperature interval Fahrenheit)
within the range of temperature exposure extremes stated in
1.4.
NOTE 1: It should be noted that throughout this document
environmental (atmospheric) temperatures are expressed in
commercial values of degrees Celsius/Fahrenheit (°C/°F) and
technical (scientific) temperatures are expressed in kelvin (K). A
temperature conversion table is given for convenience in Appendix
C.
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