Heat recovery
Marspec Technical Products offers a wide selection of heat exchanger equipment to practically any need. From simple brazed plate units to large shell and tube exchangers in exotic alloys, Marspec has the correct heat exchanger to meet any need.
Brazed plate heat exchangers are compact, economical devices for simple heat recovery, water heating or light process services. Brazed plate exchangers use a series of dimpled plates to create a large heat transfer area relative to the units’ overall size. The stacked plates are brazed with either a copper or nickel vacuum brazing process to seal the plates. The result is a rugged heat exchanger with a relatively low cost.
Marspec is a distributor for Paul Mueller, Flat Plate and AIC brazed plate heat exchangers.
Plate and frame heat exchangers are fast becoming the first choice for design engineers due the compact footprint for the overall heat transfer surface area. Plate and frame heat exchangers are similar to brazed plate models with the exception of the brazing step. Plate and frame exchangers utilize a series of dimpled plates stacked together, sealed with molded elastomer gaskets and held in a steel or alloy frame. Heat transfer plates can be nearly any stampable alloy to meet the corrosion resistance requirements of the application. The limiting factor is the upper temperature limits of the sealing materials.
Marspec is a distributor for Paul Mueller Accu-Therm™ and AIC plate and frame heat exchangers.
Traditional shell and tube heat exchangers consist of a series of smaller tubes contained in a large shell. Shell and tube exchangers are ideal for high temperature service or applications that require exotic alloys for corrosive applications. Since shell and tube exchangers are normally custom-built, the exact heat transfer performance required can be provided.
Marspec is a distributor for Paul Mueller and AIC shell and tube heat exchangers.
No matter what the heat transfer need, Marspec can provide the correct heat exchanger for the requirement from Paul Mueller, AIC and Flat Plate.
Marspec Technical Products understands the need to conserve energy and reduce emissions. Marspec’s philosophy is that the least expensive source of energy is that which is already paid for. Marspec helps energy users find those sources of heat not used, develops recovery strategies and use plans.
Waste heat (or lost profit, in other words) can be found in numerous places in industrial plants and manufacturing facilities. The heat source might be contaminated process cooling water, thermal oxidizer exhaust, boiler blowdown or other places where heat is shed. In most cases the recovered heat (or, again, recovered profit) can be put to work preheating boiler feedwater, process water or removing some of the thermal load from cooling towers.
In one case, a chemical plant in Alabama had a heat source in a sump of contaminated waste process water held for pH adjustment prior to being discharged. This heat from this water source was extracted using a Marspec designed equipment skid that included a heat exchanger, pump and all required instruments.
The recovered heat was used to make hot process water used during a step in the process of the plant’s product. The hot water was formerly made using steam in a heat exchanger. The Marspec heat recovery skid made enough hot water that cost of the project was recouped four months through natural gas savings.
Another Alabama facility, this time a textiles manufacturer, had a source of high grade heat from a thermal oxidizer exhaust stream. Although an attempt had been made to recover this heat some years ago, the consultants made a poor choice of equipment.
Marspec developed an equipment list that would meet the demanding application and took responsibility for the installation as well. Although the project cost was almost $250,000.00, the customer was able to shut down a steam fired process water heater and recover the project cost in less than six months. Additionally, the reduction in natural gas combustion removed nearly 4 million pounds of carbon emissions from the plant’s inventory.
Marspec can help nearly any energy user find new efficiencies in old processes.
