Un système de refroidissement urbain par l'eau de mer aux Caraïbes.

Une étude analyse la faisabilité d'utiliser l'eau de mer froide des profondeurs pour un système de froid urbain dans les Caraibes.
A study by Makai Ocean Engineering analyzed the feasibility of using cold deep seawater for a district cooling system in the Caribbean. Commissioned by CAF-Development Bank of Latin America with The Agence Française de Développement (AFD), the results highlighted two sites considered to be most promising: Montego Bay in Jamaica and Puerto Plata in the Dominican Republic.

The technology of seawater air conditioning (SWAC) uses pumped cold ocean water (until 5°C even in the tropics) through heat exchangers which is transferred into a district cooling distribution piping system. A computer model called METHOD compares the relative economic value of district cooling systems such as SWAC, versus a conventional A/C system on the basis of “levelized cost of cooling".

The benefits are undeniable: costs of cooling and electrical consumption are dramatically reduced, up to 90% compared to conventional air conditioning. Economically attractive for a region where hotels and resorts are large consumers of electrical energy, and conventional air conditioning (A/C) systems account for around 40% of the total energy consumption in such buildings.