Reefer container for transporting and storing plurality of produce

Abstract

The present invention relates to a reefer container for transporting and storing a plurality of produce at a predetermined temperature, the produce generating ethylene and other organic compounds during transport and storage, said reefer container comprising a substantially closed room having an atmosphere, a cooling device for maintaining the room at the predetermined temperature, and an atmosphere-controlling system (14) for controlling the atmosphere in the room of the reefer container, the atmosphere-controlling system comprising a system inlet (161) and a system outlet (162), a flow direction (165) of an airstream being defined between the system inlet and the system outlet, a fan (160) arranged at the system outlet, an ethylene reduction unit (100) for reducing a content of ethylene of the atmosphere in the room, a catalyst unit (150) arranged downstream the ethylene reduction unit, the catalyst unit being adapted to reduce a content of ozone generated during the reduction of ethylene, the catalyst unit having a catalyst inlet (153), a catalyst outlet (154) and a catalyst midsection (155) arranged substantially between the catalyst inlet and catalyst outlet, and a control unit (200), wherein a first measuring point (103) is arranged upstream the catalyst inlet and a second measuring point (151) is arranged at the catalyst midsection, the first measuring point and the second measuring point being connected with at least a first ozone sensor (170) so that via the first measuring point a first ozone concentration (C1) of the air before the air enters the catalyst unit can be measured, and via the second measuring point a second ozone concentration (C2) of the air present in the catalyst midsection of the catalyst unit can be measured, the first ozone sensor being connected with the control unit, and wherein the first ozone concentration (C1) is compared to the second ozone concentration (C2) in the control unit in order to calculate the expected ozone concentration of the air downstream the catalyst unit and the efficiency of the catalyst section. Further, the present invention relates to a method for measuring an ozone concentration in an airstream in a reefer container according to the present invention.

Description

technical field [0001] The present invention relates to a refrigerated container for transporting and storing various agricultural products at a predetermined temperature. Furthermore, the invention relates to a method for measuring the ozone concentration in the air flow inside a refrigerated container according to the invention. Background technique [0002] During the transport of ethylene-generating fruits and vegetables, polyethylene may accumulate in refrigerated containers, ie, ethylene may be generated during transport and storage in said refrigerated containers. This ethylene undesirably accelerates the ripening process of perishable goods. [0003] To avoid accelerating this ripening process, ethylene must be removed. This can be solved by exposing ethylene-contaminated air to ozone, which oxidizes this and other airborne organic matter. However, the cargo must not be directly exposed to ozone, as such exposure to ozone may damage the cargo. The ozone is then g...

AI Technical Summary

Problems solved by technology

[0006] However, the conditions under which the measuring equipment used to measure the ozone concentration must be effective are harsh, as the temperature inside the refrigeration unit may vary from -40°C to +65°C, and the humidity may be high and condensing

Goods transported in a refrigerated unit can be of any type that would cause contamination of the refrigerated unit atmosphere (air), which could cause damage to measuring equipment

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