Cooling system and method

A method comprising:

• providing a liquid nitrogen storage system configured to cool a supply of liquid nitrogen to a temperature below the vapor point of liquid nitrogen;
• coupling a piping system with the liquid nitrogen storage system to convey a portion of the supply of liquid nitrogen from the liquid nitrogen storage system;
• coupling the piping system with a liquid nitrogen control valve configured to control a flow of liquid nitrogen to at least one liquid nitrogen dispensing head;
• disposing the at least one liquid nitrogen dispensing head above a conveyance device operable to convey an aggregate stream of a concrete batching plant during use;
• and
• disposing the at least one liquid nitrogen dispensing head in a position to dispense an output flow of liquid nitrogen onto the aggregate stream of the concrete batching plant during use.

A system comprising:

• a liquid nitrogen dispenser;
• wherein the liquid nitrogen dispenser is configured to be disposed above a conveyance device to convey an aggregate stream of a concrete batching plant;
• and
• wherein the liquid nitrogen dispenser is configured to dispense an output flow of liquid nitrogen onto the aggregate stream carried by the conveyance device of the concrete batching plant during use.