Abstract: A cross-flow type cooling tower comprises a cooling tower main body, a water tank placed at the upper part of the main body, a plurality of closed type heat exchanging units arranged in the main body in substantially horizontal manner and in parallel to each other in multi-stage below the water tank, a supplying header placed near an air discharge opening of the main body, which is detachably connectable to supplying ports of the heat exchanging units, a discharge header placed near an air intake opening of the main body, which is detachably connectable to discharge ports of the heat exchanging units, wherein the water tank is divided into a first water receiving part near the air intake opening and a second water receiving part near the air discharge opening by way of a partition wall, and a switching valve is provided at at least a water feeding pipe to the second water receiving part.

Abstract: A pipe element for a heat exchanger which comprises at least one bent portion and at least two linear portions connected to the bent portion wherein an angle formed by the adjacent two linear portion is in a range of from about 30' to 3.degree..

Abstract: A counter-flow square type cooling tower is provided with a sprinkler. The sprinkler has four horizontally extending sprinkler pipes. A plurality of water spraying openings are formed along the axial direction of each of the sprinkler pipes to spray cooling water downwardly, and at least one spraying opening is formed at the free end of each of the sprinkler pipes to spray the cooling water outwardly.

Abstract: A heat exchanger comprises a plurality of coil units to form a substantially rectangular prism. Each of the coil units is supported by a pair of supporting frame members through a pair of electrically insulating spacers without direct contact with the supporting frame members.