Motores marinos de combustión interna. Estudio fisicoquímico del agua de refrigeración

Abstract

As a prelude for their use in the engine,

it is studied in the laboratory how some

physicochemical characteristics of the

“anticorrosive emulsifiable oil/water” emulsions

employed as cooling water in marine internal

combustion engines vary in the course of time.

This cooling water has been kept at the engine’s

standard working temperature in order to

evaluate the maximum time interval for which

the predetermined optimal values of these

characteristics were kept.

The tests have been carried out on 2% (v/v)

solutions of anticorrosive emulsifiable oil in

water, using two different oils. The study has

been performed on the previously mentioned

solutions which were kept at 85ºC for 0, 32,

50, 80, 104, 120, 144, 192 at 242 hours; after

which, the same physicochemical characteristics

were measured. These characteristics are: pH,

specific conductivity, chlorides, hardness and

the percentage of anticorrosive emulsifiable oil

dissolved in water.