Abrégé

Large heat store, comprising a storage basin (1), arranged in the storage basin (1) a liquid storage medium (2) for storing heat energy, a cover device (4), running along a main direction of extent (3), for covering the storage medium (2), wherein the cover device (4) is mounted so as to float on the storage medium (2), and wherein the cover device (4) comprises a continuous, in particular liquid-tight and vapour-tight, sealing layer (5), wherein between the surface (6) of the storage medium (2) and the sealing layer (5) a vapour space (7) is kept free in order to accommodate and pass on gas, in particular steam, leaving the storage medium (2).

Classes IPC  ?

• F24S 10/17 - Collecteurs de chaleur solaire utilisant des fluides vecteurs les fluides vecteurs constituant des piscines ou des bassins comprenant des couvercles ou des éléments de collecteurs solaires flottants
• F28D 20/00 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou

Abrégé

The invention relates to the apparatus and method for evaporation to concentrate heat- sensitive solutions at moderate temperature and ambient pressure by irrigating heat- sensitive solutions on the vapor/liquid contact surface enhanced structure (1.1.1), fluids is then be equally distributed within the vapor/liquid contact surface enhanced structure (1.1.1) in form of droplets and flow top down, the solution is simultaneously heated up by the primary heat exchanger located within the vapor/liquid contact surface enhanced structure (1.1.1). Air is blown through the vapor/liquid contact surface enhanced structure (1.1) in opposite direction of the fluid flow and circulated to entrain solvent vapour from evaporating compartment (1.1) to condensing compartment (1.2) through the connected space between these 2 compartments. Condensation of solvent vapour takes place on the surface of the indirect heat exchanger (1.2.1). Inert gas is introduced into the fluid circulation reservoir (2) in order to minimize the effect of oxidation processes to achieve high quality of concentrated product.

Classes IPC  ?

• A23L 2/08 - Concentration ou dessiccation des jus
• A23L 3/16 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires par chauffage direct des produits en vrac non emballés
• B01D 1/00 - Évaporation