Solid phase latent heat vapor extraction and recovery system for

Details Solid phase latent heat vapor extraction and recovery system for Solid phase latent heat vapor extraction and recovery system for

1997-10-27

1999-08-24

Capossela, Ronald

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

62 542, F17C 702

Patent

active

059410817

ABSTRACT:
The invention provides a system for unloading liquified gases from rail cars or other transport vehicles by using an energy buffer system which allows the shifting of electric demand to off-peak hours when electric power rates are lower. The system employs a buffer tank containing solidified gas to withdraw vapor remaining in the rail car after the liquified gas has been removed. The invention relies on the fact that the liquified gas which is to be unloaded has a triple point pressure that is low enough to allow recovery of the majority of the residual vapor in the rail car. The system allows the use of a smaller refrigeration unit operating at a constant load over a long period of time, in place of a larger refrigeration unit. The system also provides an additional advantage of extracting vapor from a rail car at a faster rate than the rate which is possible with a typical compressor.

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