The specific heat of water is 4.18 [kJ/kg °C]. Thus, to raise the temperature of 1kg of water by 1°C, it is necessary to provide it with a quantity of heat of 4180 Joules or 1.16 Wh.
Water 4180 [J / kg °C].
Brine water 50/50 3500 [J / kg °C]
Aluminum 897 [J / kg °C]