Cooling of a beverage dispenser

A beverage dispenser, having

• a supply opening adapted for supplying an aqueous liquid from a source of aqueous liquid, wherein the supply opening is couplable to the source of aqueous liquid;
• a recooling heat exchanger having a heat receiving portion, a recooling inlet and a recooling outlet, wherein the supply opening is coupled with the recooling inlet;
• a reverse osmosis filter having an inlet for aqueous liquid, a permeate outlet and a concentrate outlet, wherein the recooling outlet of the recooling heat exchanger is connected to the inlet of the reverse osmosis filter;
• and
• a cooling device having a cooling portion extracting heat energy from the permeate and a heat dissipation portion dissipating energy to a the heat receiving portion of the recooling heat exchanger;
• wherein the heat dissipation portion of the cooling device is thermally coupled with the heat receiving portion of the recooling heat exchanger;
• and
• wherein the cooling portion of the cooling device is thermally coupled with the permeate exiting the permeate outlet of the reverse osmosis filter, wherein the permeate enters the cooling portion by a cooling portion permeate inlet and exits the cooling portion by a cooling portion permeate outlet.