Well I am not really sure but I think if you use dirt it keeps things cold but you probably will not be able to use dirt so I am not sure.
The answer lies in INSULATION. To slow the amount of warming from the outside.
Try readily available insulators like polystyrene beads or packaging, or loft insulation. Use a double skin container, with the insulation between the two. Make sure you cover the top and bottom, as well as the sides.
One way to keep something cold without a fridge or ice is to use a cooler or insulated container. You can also wrap the item in a wet cloth and place it in a shady, breezy area to take advantage of evaporative cooling. Another option is to bury the item in the ground, where the cooler temperature can help keep it cold.
A plastic cup may help insulate cold water for a short period of time, but it is not as effective as an insulated container. The thickness of the plastic and the ambient temperature will also affect how long the water stays cold.
To prevent ice cream from melting quickly in the summer heat, place the ice cream container in a larger container filled with ice. The cold temperature from the ice will help keep the ice cream cold and prevent it from melting too quickly.
If the water is cold, you can keep it cold by storing it in a well insulated container, ideally a vacuum flask, or failing that, a Styrofoam chest. That doesn't keep it cold indefinitely, but it does keep it cold longer than if you did not use an insulated container. Also, even if you do not have electricity or ice boxes, you may still be able to buy a bag of ice. Many stores sell them.
An insulated container or flask can help keep liquids either warm or cold by reducing heat transfer between the liquid and its surroundings. Additionally, ice packs or heating pads can be used to maintain the desired temperature for longer periods of time.
a thermos?
A flask. It also keeps drinks hot.
One way to keep water cold without a fridge is to use an insulated container, such as a cooler or thermos, and add ice or ice packs to help maintain the cold temperature. Placing the container in a shaded area or wrapping it in a towel can also help keep the water cold for a longer period of time.
use a metal container to keep a drink very full
It uses insulation which reduces the amount of heat entering the container by reducing the effects of conduction.
Only if it is in a sealed container and the car is as cold as a refrigerator.
Milk will probably work fine, if you can keep it cold.
To keep an ice bath cold for longer periods of time, you can add more ice, use a larger container to hold the ice bath, insulate the container with towels or blankets, and keep the ice bath in a cool place away from direct sunlight or heat sources.
To ensure that the coffee creamer stays cold at a party, you can place it in a container with ice or use a cooler to keep it chilled.
It uses insulation which reduces the amount of heat entering the container by reducing the effects of conduction.
It uses insulation which reduces the amount of heat entering the container by reducing the effects of conduction.
A water pitcher with a built-in filter is a good option for keeping water cold and easily accessible in the fridge.