This Issue Covers the Topic:Coolants

* Heat Exchanger has a Distributor Over the Pipe Bundles and Cooling Ribs, to Give a Flow of Coolant Which is Partially Evaporated to Increase the Cooling Capacity.

* Solenoid Valve for a Coolant Circuit.

* System for Recovering Heat from Waste Water, Comprises Feeding it Over Evaporator Plates Connected to Supply of Gaseous Coolant, Feeding Heated Coolant to Compressor and Using Energy Released to Heat Domestic Water Supply Via Heat Exchanger.

* Aqueous Coolant for the Running-in Phase of an Engine Containing Wet Chamber Corrosion Inhibitors.