Abstract: A vacuum condenser adapted to reduce pressure in an enclosure containing a secondary liquid and thereby cause the accelerated production of vapor from the secondary liquid by the passage of a primary liquid through the vacuum condenser and whereby the vapor produced is absorbed by the primary liquid within the vacuum condenser by being entrained and condensed within the primary liquid wherein the vacuum condenser is configured to cause the operating temperature of the secondary liquid within the enclosure to maintain a stable minimum temperature for a predetermined substantial rate of production of vapor.

Abstract: A vapour absorption system (11) adapted to receive a vapour comprising a vacuum pump (16) having an operating liquid wherein the vapour is received by an operating liquid and condensed therein to provide condensed liquid mixed with the operating liquid.