some retorts apply the steam/air principle for operating performance.The following are features of the Malo Steristar steam/air retort
1. fan-forced steam/air circulation to achive a uniform heat distribution throughout the retort
2.a"wentless"process,resulting in significant energy saving and a cook room environment that is cooler and quieter
3.precise control of cooling water temperature,which minimizes energy usage
4.precise control of the steam/air process,which results in shortened cycle time for maximum production and consistent quality
5.reduced process time and optimal heat transfer characteristics,which allow foods to retain more of their natural qualities.
In the Lagarde steam/air retort,steam is directly injected inside the retort chamber and judiciously distributed.A ventilator fan generates a steamforced circulation and reinforces the temperature accuracy during the heat treatment.The opening of the steam inlet valve is automatically monitored,depending on the programmed temperature parameters. The pressure is also independently controlled from the temperature by injecting or venting compressed air.During cooling,the condensate can possibly be circulated by a pump and sprayed on containers to be cooled.Direct mixing with fresh water or passing it through a heat exchanger cools this recycled amount of water.The water inlet in the cooling circuit or in the service side of the heat exchanger is automatically controlled,depending on programmed parameters.The integration of the heat exchanger in the cooling circuit allows the use of various water qualities (from cooling tower,drilling,from the sea or chilled water) without any risk of mixing with the process water that is in contact with packages.The pressure is always controlled in the same way as during the comingup and holding step.