Water chilling plant
AssigneeA.P.V. Spiro-Gills Limited
InventorJohn A. Gale
Life of this patent
Estimating the term…
Abstract
In a water chilling plant and method, normally with two or more stages of vacuum chilling, the vapor from the chilling stage or stages is presented to an air cooled heat exchanger for condensation in two different flow streams at different stages of compression, so that the cooler air nearer the air inlet works on vapor at a lower stage of compression.
Claims9
In a method of chilling water in a vacuum chilling plant having at least two chilling states wherein the vapour from each chilling state is condensed in a multi stage air-cooled heat exchanger, having an air inlet and an air outlet the improvement comprising:
- feeding the vapour to the heat exchanger in at least two separate flows at different states of compression and temperature whereby the cooler air near the air inlet condenses vapour at a lower temperature and the warmer air nearer the air outlet condenses vapour at a higher temperature.
In a vacuum chilling plant comprising at least two chilling states, compressors for drawing off the vapour from each state and passing it in compressed state to an air cooled tubular heat exchanger having an air inlet and an air outlet for condensation, the improvement comprising:
- the flow of vapour to the heat exchanger being in at least two streams at different temperatures, with the stream of vapour at the higher temperature being passed to heat exchanger, tubes exposed to warmer air nearer the air outlet from the heat exchanger while the stream of vapour at the lower temperature being passed to the tubes exposed to the cooler air nearer the air inlet.
Dependencies are inferred from the claim text.