Heat recovery systems

Heat recovery from boiler blowdown captures energy that would otherwise be wasted when high-temperature blowdown water flashes to steam at lower pressure. In a typical arrangement, flash steam is separated in a flash vessel and returned to the feedtank, while the remaining hot water can be used through a heat exchanger to warm incoming make-up water. This helps reduce make-up water demand, water treatment cost and boiler fuel use while also lowering blowdown discharge temperature. Boiler blowdown heat recovery is especially relevant where automatic TDS control creates a consistent blowdown stream and the site wants to reclaim more of the treated water and heat value already paid for. Spirax Sarco heat recovery systems support boiler house efficiency improvement without relying on generic energy-saving measures detached from the actual blowdown duty. They are typically reviewed when users want to convert boiler blowdown from a necessary loss into a measurable recovery opportunity inside the wider boiler house energy balance.