This is a picture of a plate cooler. A plate cooler is used to cool milk down after milking and before storage. Plate coolers operate thermodynamically by using water to cool the milk or by refrigeration. Two bulk tanks side by side. This rotary barn is used for demonstrations.
Cows walk on and are milked while they travel around the carousel.
This shows the mechanics of a rotary barn. The top platform rests on a series of rollers.