Understanding the Mechanics of Cool: How Cellars Retain Their Temperature
Cellars have been used for centuries as a way to keep food fresh and cool, and they continue to be a popular storage method even today. But how do they manage to stay cool, even in hot weather? It all comes down to the fact that, under the right conditions, a cellar can be a perfect example of passive cooling. Essentially, a cellar takes advantage of the temperature difference between the earth and the air above it. The earth is able to maintain a relatively constant temperature, usually around 55 degrees Fahrenheit, no matter how hot or cold it gets outside. Therefore, when you build a cellar underground, it’s able to stay at this steady temperature regardless of the weather above. This is why root cellars were traditionally built into hillsides or dug into the ground. However, even if you don’t have a convenient slope in your backyard, you can still build a root cellar using other methods. The important thing is to figure out how to take advantage of this natural temperature difference.A Look at Different Types of Root Cellars and How They Function
There are a few different types of root cellars, and they all function slightly differently. Here are a few examples:- The traditional hillside root cellar. These are often the easiest and most straightforward type to build. They are constructed by digging into a slope, then lining the walls with stones or concrete. The roof is typically made of wood, with a layer of soil on top to provide further insulation. The hillside root cellar will typically have a door on one end and some form of ventilation on the other to allow for air flow.
- The basement root cellar. If you’re lucky enough to have a basement in your home, you might be able to convert it into a cellar. This can be an affordable option since the main structure is often already there. Basements are already located underground, which helps to keep them cool. You may need to add some additional insulation to the walls and ceiling, but in general this type of root cellar can be relatively simple to construct.
- The freestanding root cellar. If you don’t have a hillside available, you can still build a root cellar above ground. These are typically made of wood or concrete and are similar in design to an outdoor shed. The walls need to be insulated to keep the temperature constant, and there will need to be ventilation installed to allow fresh air in and stale air out.