PRELIMINARY STUDIES OF AIR CURTAINS FOR REFRIGERATED WAREHOUSES

摘要

The opening and closing of heavy doors wastes considerable time in refrigerated warehouses which have a large movement of food products. Open doors also cause refrigeration loss which may in turn cause spoilage. In an attempt to prevent refrigeration loss and still allow the door to remain open, a relatively high velocity stream of air, called an air curtain, is directed across the entrance. To evaluate the usefulness of air curtains a literature search was made, a file of literature from air curtain manufacturers was compiled and several installations in various parts of the country were visited.