Heat Exchangers are widely used in every industry. We specialize in Gasketed Plate and Frame, All Welded Shell and Plate, Brazed Plate, and Spiral Heat Exchangers. Leonard Engineering also represents Wet Surface Air Coolers from Alfa Laval Niagara.
Alfa Laval Niagara Wet Surface Air Coolers are efficient and durable closed-loop, evaporative coolers and condensers, used in liquid cooling, single phase gas cooling and turbine exhaust vacuum steam condensing applications. Each WSAC cooler or condenser is custom-designed to fit the specific application, and are tailored to meet the unique needs of the most demanding applications.
Fusion-bonded plate heat exchangers are made of 100% stainless steel and provide efficient heat transfer with a small footprint. They are maintenance free and provide a long service lifetime. They are suited in applications which put high demand on cleanliness, applications where aggressive medias such as ammonia are used or where copper and nickel contamination is not accepted. Can handle very high temperatures or extremely high pressures.
The Alfa Laval gasketed plate heat exchanger is designed to provide maximum efficiency in transferring heat from one liquid to another or from steam to liquid. It consists of a series of gasketed, embossed metal plates arranged alternately and bolted together between end frames to form channels through which hot and cold media flow. The hot fluid flows on one side of the plate while the cold fluid flows on the other, with the plate itself providing the most effective means to transfer heat from one fluid to the other. Gaskets on the plates seal the channels and provide flow direction.
The concept of a spiral heat exchanger is as simple as it is sophisticated. Two or four long metal strips, onto which spacer studs are welded, are wound around a core, thus creating two or four equally spaced single passage channels.
Heating or cooling of particle-laden or viscous fluids is a difficult duty for most types of heat exchangers. Spiral heat exchangers with their compact, single channel design are ideally suited for outstanding thermal and uptime performance in these duties. Spirals can attain high heat-transfer coefficients with particle-loaded fluids, while avoiding fouling, plugging, unequal fluid distribution or dead spots in both channels. Other significant duties involve vapor/liquid and gas or vapo/liquid service where the spiral's subcooling capability and long condensation path maximizes recovery.