Water supply channel for evenly wetting a hybrid dry cooler

Abstract

A hybrid cooler with selectively applied water to one or more heat exchangers has one or more water feed channels above each heat exchanger to which water is to be applied constructed to provide a smooth film of water by a feed channel overflow edge and with means for suppression of waves, if any, in the channel.

1 . Water supply channel for evenly wetting a hybrid dry cooler, particularly for large refrigeration systems for heat transfer between a liquid and a gas with partial latent heat emission, and comprising means for re-feeding water for the wetting of a heat exchanger, the improvement wherein the apparatus is constructed so that the re-feed water flows from an open pipe in the baffle which is fed by the retaining and separating device of a water supply channel, where it flows through one or more openings of a baffle or fracture of the channel by means of static pressure and then as a calmed water surface flows over an overflow edge of the channel to the heat exchanger. 
   
   
       2 . Water supply channel according to  claim 1 , wherein the wetting water is fed vertically from above the channel wall and through the baffle or from below through the channel floor. 
   
   
       3 . Water supply channel according to  claim 1 , wherein flow through the openings and over the baffle of the retaining and separating device is such that only so much water flows as well prevent the creation of waves or partial raising of the water level in the supply channel. 
   
   
       4 . Water supply channel according to  claim 1 , wherein the slits on the guide plate lie in the direction of flow of the wetting water or at an angle to it. 
   
   
       5 . Water supply channel according to  claim 1 , as applied to a dry cooler with a timed heat exchanger, wherein the guide plate ends directly at the fins or a distance from the fins. 
   
   
       6 . Water supply channel according to  claim 1 , wherein the water supply channel is open at the top for unhindered cleaning or is closed at the top to stop the build up of dirt. 
   
   
       7 . Water supply channel according to  claim 1 , wherein the overflow curved guide plate is roughened using sand or glass streams. 
   
   
       8 . Water supply channel according to  claim 1 , wherein the overflow side of the channel comprises a slotted or roughened metal sheet, with a lower end which extends beneath the calmed water surface. 
   
   
       9 . Water supply channel according to  claim 1 , wherein the supply channel ( 6 ) is adjustable in height and horizontally. 
   
   
       10 . Water supply channel according to  claim 1 , wherein the heat exchanger is of a fin-tube type fitted with fins for several pipes or the heat exchanger consists of several individual finned tubes.