ISLAND CITY HEATERS

1. ISLAND CITY HEATERS • Compact Design High Horse Power(HP) – Dense Package • Fast Heat Rise – Heats Fluid Directly - No Heat Exchanger - Traditional Loop Circuit - Or heats in a parallel circuit to augment heating requirements • No Hot Spots, Contact Areas, or Ignition Sources • Machine Design Friendly – Layouts with SAE A-E Mounting on input /output special mount per request • Low Weight to HP Ratio • No Fluid – No Heat Design (Run Dry – Only Seal Lube Flow Required) • Bi-Directional Rotation – Adjusts to Design Requirements • Self Cleaning Internal Design – Agitated fluid within Pockets • Model (Design) available for specific HP and RPM requirements – ability to design around or into a specific system • CNC Manufacturing - 100% Tested

2. In general the Dynamic Heat Generator (DHG) is a shear style fluid heater. In simple format the heater is constructed with a single pocketed rotor [Red] attached to drive shaft. The drive shaft is nested in bearings [Green] which are held within pocketed end plates [Orange]. The center housing [Blue] provides a fixed dimension between the end plates and also incorporates a port for outlet. Common flow thru the unit is from the end plate to the center housing port. The heater is bi-directional, allowing for common through drive shafts to power pumps or alternate accessories in either rotation. Design for the heater unit is based on a torque converter which provides excellent power absorption characteristics. Hence the heater may also be used as a retarded device. Mounting of the units are SAE A-E or special mounts per application.

3. Operation – How does the unit make HEAT? In general, the units are supplied with fluid ported in the end plate allowing the housing to fill completely. Flow exits the center housing normally across a distribution block or an orifice outlet. Housing pressures range, but are normally 60psi. Heat generation occurs from the shear of the fluid, which occurs when the shaft/rotor spins creating centrifugal force on the fluid. With outward motion, fluid is forced out of the pockets and put into shear by the opposing pocket. An odd vs. even number of pockets on the rotor vs. end plates create a slight pumping action resulting in a spiraling of fluid from pocket to pocket. As the fluid leaves, enters the pocket, shear of the fluid is created. Heat is carried away in the fluid which exits the heater.

4. HEAT TRANSFER - Flow rate of the unit is nominal, thus for conversation a flow of 5gpm could have a heat rise per pass of 20°F; while a 2.5gpm flow will have a rise of 40°F and a 7.5gpm would have 10°F. The same output heat is generated by the heater at a fixed speed; however, increasing or decreasing the flow rate will change the temperature rise of a given fluid per pass through the heater. • Heat output is directly related to rotational shaft speed. As speed increases the heat output also continues to increase. • Models – Each model has a heat generation curve which is based upon RPM. If a curve does not cover a required heat region, Island City can MFG a specific model to accommodate heat load requirements, given the purchase quantity is acceptable. • The heater is a turbine device which creates heat and transfers it into fluid. The energy transfers heat into fluid at all flow rates at fixed speed. It is not a hydraulic pump which HP is a function of flow and pressure. Lower Flow - High Delta T Higher Flow - Lower Delta T

5. CONTROL Heat output or control may be obtained by a few approaches: • SPEED – By decreasing the input speed the heaters’ generation capacity will decrease. This can be accomplished via VFD, decrease in Engine rpm, hydraulic drive, or other. • TURN FLOW On/Off [Fluid] -- By turning the flow off and draining the unit the heater will not make any heat. Only a small lube flow is needed to lube the mechanical seals while the shaft continues to rotate. • TURN ON/OFF [Drive]-- Units may be turned on/off via clutch or hydraulic/electric motor to also control heat output. • Thermostatic Valve – A thermo valve may also be used to direct flow to an alternate area for temperature control.

6. DESIRED OPERATIONAL PARAMETERS • Temperature Range: 200°F or Higher Temperatures upon review of application. Depending on fluid type and application, fluids may be heated much high; though, alternate sealing compounds and seal configurations may be needed to achieve higher temperatures. Typical operation of 180F is common and does not require alternate seal compounds. – With use of thermo transfer fluids +400°F is possible. • Pressure: Minimum Pressure 20psi to 80psi Lip or 60psi Mech. Alternate pressure upon review. Not rated for vacuum service – 300psi max. • Fluids Types: Oil or petroleum based fluids including heat transfer fluids, water or water based solutions, glycols, sugar based fluids in concentrations of less than 60%. Additional fluids upon review. • Seals Types: Lip Seals (Right) primarily for oil based fluids or Mechanical Seals (Left) for primarily water or glycol based fluids. • Lube Flow: Mech. Seal Lube flow of greater than 0.25 gpm at 40psi per seal, Lube flow is a small amount of flow that is directed to the seal, it is suggested to be cooler temperature than operation fluid. • Flow Rates: Can be varied through the heater. Be aware with lower flow rates the temperature per pass will increase under the same load of a high flow rate. To low of flow will boil and break down the fluid. • A concern for Island City and the end user is not to cook the fluid due to a low flow rate with given horsepower input. When sizing a system, it is important to review the application and be aware that slow moving fluid can heat up extremely fast.

7. Water Heating DemoModel A1R7196 Heater with 5gpm Circulation Pump 12gal Volume, Pump Inlet/Heater Outlet Temp Probes 16°F Degree Average Increase Per Pass 20HP Drive

8. Water Boiling DemoModel A1R7196 Heater with 5gpm Circulation Pump 12gal Volume, Pump Inlet/Heater Outlet Temp Probes 16°F Degree Average Increase Per Pass 20HP Drive

9. HEATER MODELS

10. HEATER MODELS

11. Applications • Mobile – Some to include -Engine Pre & Post Heating -Heating Vaporized Liquefied Gases -Heating Chemical Mixes -Heat Oil, Fuels and Lubricants -Hydraulic Tanks & Gear Boxes -Deck Heating -Cabin Heating -Deice Vehicles and Aircraft -Heat Water tanks or tankers (Interstate & Railway) -Ground Heating -Concrete Curing -Concrete Temperature Stabilizer -Construction Site Heat (Fluid or Air) -School Bus or Coach Heating -Rail Road -Locomotive Engine Heating -Passenger Cabin Heating -Tempered Freight Cars -Tempered Perserable Cars -Wind Generation -Pre Heating of Gear Lube -Maintain moist free bearings, Yaw & pitch -Maintain Electrical Drive -Reefer Vans -Heat Trailers with 1/2 input power with same output -Tankers -Fuel Transport, Maintain Ethanol (animal fats) temperature above 40°F [wet kit or direct drive] -Hwy Line Stripping -Heat Thermo Plastic

12. Applications –Cont. • Industrial • Heating Waste Water for process use • Co Heat Generation of Waste Water • Heating Plating Solutions • Food • Heat Die oil for food extrusion • Heat sugar based fluid to condense product formula • Heat water for cooking, supplied to double wall tanks • Heat water for Pasteurizers process • Ability to cook and blanch with same fluid • Fast heat up & recovery • Easy Clean Up • May be Clean in Place (CIP) or used on remote equipment

13. Summary • Many applications need heat and heating solutions. Island City heaters offer a different approach to heating fluids, which allows the heater to perform in areas which have been challenging for other heating methods. We welcome the opportunity to review applications and would like to thank you for reviewing our products. • If you have question feel free to drop us a call at 715-536-8600 or email at islandcitydhg@verizon.net.