Heating effect improvement by roof ventilators in a large workshop

The temperature is higher in the upper part and lower in the occupied part of a large space in winter. To solve this problem, proposes to supply outdoor air by the roof ventilators, mix it with indoor air in the higher temperature area and depress the cold air quantity by minor positive pressure control, which proves to be a desirable method in reaching a good heating effect and saving energy through practical usage in a power generating plant.