Cold Storage frost

[gwapa]

Dear friends
I would like to hear your comments to evoid the frost formation in a -28°C cold storage .

I have read over the installation of conditioned vestibule in the doorway. There are two method for conditioning the vestibule. Via humidity absortion with a silica gel wheel and the other creating a mixture of air which dewpoint is lower than inside .

What can you say? What are your expirence?
Best regards
Gwapa

[smpsmp45]

You can see the Biddle site as well as Jamison site for this applications. We have trioed sliding doors with Rapid doors combination, & that works very well also.

[gwapa]

Thanks smpsmp45