Chimney

A chimney is a structure which provides ventilation for hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere. Chimneys are typically vertical, or as near as possible to vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack, or chimney, effect. The space inside a chimney is called a flue. Chimneys may be found in buildings, steam locomotives and ships. In the United States, the term smokestack (colloquially, stack) is also used when referring to locomotive chimneys or ship chimneys, and the term funnel can also be used.

The height of a chimney influences its ability to transfer flue gases to the external environment via stack effect. Additionally, the dispersion of pollutants at higher altitudes can reduce their impact on the immediate surroundings. In the case of chemically aggressive output, a sufficiently tall chimney can allow for partial or complete self-neutralization of airborne chemicals before they reach ground level. The dispersion of pollutants over a greater area can reduce their concentrations and facilitate compliance with regulatory limits.

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Chimney (sculpture)

Chimney is a brick sculpture which contains multiple architectural and sculptural elements, and is part of a larger, more open plaza designed for children. It is located outside the lobby atrium of the Riley Hospital for Children.

Description

In many ways this object resembles a chimney, however at the same time it functions as a pavilion. The four limestone arches and corresponding columns at the base hold up a red brick column that incrementally widens near the top; the entire height of the sculpture is approximately 25 feet tall. Once inside the object, it is clear that the chimney is open. It is not clear if the elements comprising the object were recycled or fabricated specifically for this piece.

The exterior of the object is primarily a brick—red brick, while the interior is a cream-colored brick.

On the front and rear sides of the chimney, there is a small stone sculpture of the face a child (cherub).

The front and rear arches are approximately five feet tall from the center to the base, and approximately five feet wide. The side arches are smaller, about five feet tall and four feet across. Each side column is five and a half feet tall from capital to pedestal and 18 inches wide. The widest dimension of the object is approximately eleven feet.