Return sand cooling system and return sand cooling method

A return sand cooling method that cools return sand and adjusts the moisture content of cooled return sand, wherein the return sand cooling method comprises:

• measuring the moisture content and temperature of the return sand;
• determining an appropriate water addition amount, which is an amount of water to be added to the return sand;
• adding water of the appropriate water addition amount to the return sand and cooling the return sand by the latent heat of vaporization of water while introducing air to obtain the cooled return sand;
• and
• measuring the temperature and humidity of introduced air to be introduced;
• the return sand cooling method determining the appropriate water addition amount on the basis of the moisture content and temperature of the return sand, and the temperature and humidity of the introduced air.

A return sand cooling system that cools return sand and adjusts the moisture content of cooled return sand, wherein the return sand cooling system comprises:

• a sand moisture and temperature measuring instrument that measures the moisture content and temperature of the return sand;
• a control device that determines an appropriate water addition amount, which is an amount of water to be added to the return sand;
• a water-sprinkling cooling device that adds water of the appropriate water addition amount to the return sand and cools the return sand by the latent heat of vaporization of water to obtain the cooled return sand;
• an air introducing device that introduces air into the water-sprinkling cooling device;
• and
• an introduced air temperature measuring instrument that measures the temperature of air to be introduced into the water-sprinkling cooling device;
• the control device determining the appropriate water addition amount on the basis of the moisture content and temperature of the return sand, and the temperature of the introduced air.

A return sand cooling system that cools return sand and adjusts the moisture content of cooled return sand, wherein the return sand cooling system comprises:

• a sand moisture and temperature measuring instrument that measures the moisture content and temperature of the return sand;
• a control device that determines an appropriate water addition amount, which is an amount of water to be added to the return sand;
• a water-sprinkling cooling device that adds water of the appropriate water addition amount to the return sand and cools the return sand by the latent heat of vaporization of water to obtain the cooled return sand;
• an air introducing device that introduces air into the water-sprinkling cooling device;
• and
• a cooled return sand moisture and temperature measuring instrument that measures the moisture content and temperature of the cooled return sand;
• the control device determining the appropriate water addition amount on the basis of the moisture content and temperature of the return sand, and the moisture content and temperature of the cooled return sand.

A return sand cooling method that cools return sand and adjusts the moisture content of cooled return sand, wherein the return sand cooling method comprises:

• measuring the moisture content and temperature of the return sand;
• determining an appropriate water addition amount, which is an amount of water to be added to the return sand;
• adding water of the appropriate water addition amount to the return sand and cooling the return sand by the latent heat of vaporization of water while introducing air to obtain the cooled return sand;
• and
• measuring the temperature of air to be introduced;
• the return sand cooling method determining the appropriate water addition amount on the basis of the moisture content and temperature of the return sand, and the temperature of the introduced air.

A return sand cooling method that cools return sand and adjusts the moisture content of cooled return sand, wherein the return sand cooling method comprises:

• measuring the moisture content and temperature of the return sand;
• determining an appropriate water addition amount, which is an amount of water to be added to the return sand;
• adding water of the appropriate water addition amount to the return sand and cooling the return sand by the latent heat of vaporization of water while introducing air to obtain the cooled return sand;
• and
• measuring the moisture content and temperature of the cooled return sand;
• the return sand cooling method determining the appropriate water addition amount on the basis of the moisture content and temperature of the return sand, and the moisture content and temperature of the cooled return sand.