… the following properties : (a) they take a polish when gently rubbed; (b) their consistency and solubility depend … (but not sticky or liquid) (soft waxes), others are brittle (hard waxes); (ii) they are not transparent but may …
… In the mixing type economiser waste steam is passed directly into a chamber containing the feed water. (2) Air … (2) Mixing condensers . In these the steam is mixed directly with water. The heading includes ejector condensers …
