What Is Return On Capital Employed (ROCE)? For those who don't know, ROCE is a measure of a company's yearly pre-tax profit (its return), relative to the capital employed in the business. Analysts use ...

When the combustion air duct is connected directly to the return plenum for a furnace, the blower fan on the furnace pulls outdoor air in to the return plenum. To supply this air to the furnace room, ...

While exposed ceilings in office interiors lend a spacious, open feel, this trendy architectural feature has created a new challenge: finding a viable return air path. Plenum ceilings use the area ...