Abstract: A heat exchange comprises a battery of rectilinear tubes of synthetic plastic material connected at their respective ends to headers. At least one of the headers is fixed to the wall of the tower and the remainder of the exchanger is mounted by suspension members to allow free expansion of the tubes of the battery.

Abstract: The invention provides a device for receiving a liquid which falls freely in the form of a shower or the like, of the type comprising a receiving wall which is inclined to the vertical and directs the received liquid into a trough which extends along the lower edge of the receiving wall. The devices comprise in the flow path of the liquid received on the inclined wall and before the liquid enters the trough, means for substantially reducing or eliminating the vertical velocity component of the liquid when it enters the trough.The disclosure is also directed to such a device employed in countercurrent installations for putting a liquid in contact with a gas.

Abstract: The invention provides a device for receiving a liquid which falls freely in the form of a shower or the like, of the type comprising a receiving wall which is inclined to the vertical and directs the received liquid into a trough which extends along the lower edge of the receiving wall. The devices comprise in the flow path of the liquid received on the inclined wall and before the liquid enters the trough, means for substantially reducing or eliminating the vertical velocity component of the liquid when it enters the trough.The disclosure is also directed to such a device employed in countercurrent installations for putting a liquid in contact with a gas.

Abstract: The process avoids, in a cold period, the formation of ice inside a cooler having lower air inlets and employing atmospheric air and a freezable liquid stream. The process comprises providing the air inlet apertures with vertical metal trellises which extend in a part of the apertures from the top of the latter downwardly. In cold periods, cold water is caused to stream along the trellises so as to form, under controlled conditions, curtains of ice on the trellises which partly close the apertures. When the temperature of the air, and consequently the temperature of the water cooled inside the cooler, resumes a sufficiently high temperature to avoid the formation of ice inside the cooler, the curtains of ice formed on the trellises are melted.

Abstract: An installation for contacting a fluid with a gas is disclosed and comprises an enclosure provided in the lower part of its periphery with at least one gas inlet opening and in its upper part with at least one gas discharge opening. The contact unit is composed of a combustible material, and unit is disposed in the enclosure above the gas inlet opening and is suspended from a framework by hooking means which comprise temperature responsive means adapted to cause release of said hooking means in response to the detection of a predetermined temperature at the most equal to the flame temperature of the contact unit.

Abstract: A heat exchanger comprises a battery of rectilinear tubes of synthetic plastic material connected at their respective ends to headers. At least one of the headers is fixed to the wall of the tower and the remainder of the exchanger is mounted by suspension members to allow free expansion of the tubes of the battery.