AKB - Thermic oil

IMPORTANT DIFFERENCES OF AKKAYA™ HOT OIL BOILERS

It is very important to keep the thermic oil in movements inside tubes of boiler. Otherwise the film temperature will rise and the cracking will occur in the oil..

To have the system completely air free is quite important for long life of the oil, to prevent oxidation and safe operation. The boiler must be designed in order to let all the air go out of the boiler easily. The air exist in the system also cause pump cavitations.

AKKAYA™ hot oil boilers are made of specially formed helisoidal tube bundles. Below you can see a schematic description. The design brings very little pressure losses inside the boiler and air free working.

The isolation work is carried out with high attention to prevent heat losses through the body. The special design obtains decrease in the exhaust gas temperature leaving the boiler, which guarantees the high efficiency.

The packaged boilers can be supplied with all equipments including pumps, valves, sensors, control panel etc.

Akkaya boilers can be operated with solid fuel - gas or oil.

A Comparison: Thermal Fluid vs. Steam
Efficiency
Thermal fluid heater manufacturers indicate that efficiencies can be as much as 5% to 8% higher than conventional steam systems. Hot-oil heated shell-and-tube steam generators can provide increased efficiency as well. They require less water treatment and are subject to decreased fouling due to the considerably lower heat flux.
Thermal fluid systems suffer none of these losses and as a result can be up to 31% more efficient - excluding additional heater and steam generator efficiencies.

Licensed Operators
In many areas of the country, the law requires that full-time licensed stationary operating engineers supervise the operation of high-pressure fired steam systems.

With this dependence on delicate pressure balance, accuracy is generally limited to swings of ±10°C or so at best.
In comparison, thermal fluid equipment manufacturers report the ability to regulate temperature swings to ±1.5°C or less.

System Cost
Purchase cost of steam systems can be less than thermal fluid systems. With less-complex thermal fluid systems however, there are paybacks: decreased operating costs, maintenance costs, and environmental concerns -- and increased production and product quality resulting from better control of heating and cooling.

Corrosion
Steam systems are well known for corrosion problems. Air in combination with hot water, salts and other reactive contaminants presents an extraordinary potential for metal corrosion. Steam is abrasive and has virtually no lubricity. Add scale and deposits from minerals found in most all water supplies, and system problems quickly compound.

Maintenance
Steam systems require constant, unending maintenance -- maintenance that is focused on steam traps, valves, condensate return pumps, expansion joints and water analysis and treatment. And when the power fails in a cold climate, steam systems are subject to freezing, burst pipes and damaged components.

Environmental Safety
The water in a steam system must be chemically treated to reduce corrosion, among other things. The chemicals cannot be discharged into sewers, as they present considerable environmental hazard. In addition, the temperature of discharge water is often regulated by law. Thermal fluid systems require no blowdown, and unlike steam systems, are not subject to continual leakage.

Safety
To deliver the kind of heat required in most process operations, steam systems would have to operate at exceptionally high pressures.
In contrast, most thermal fluid systems are vented to atmosphere. Pump discharge pressure is just high enough to overcome frictional drag from piping and components while maintaining turbulent flow.

Temperature Control
Steam systems rely on the control of pressure to control temperature. With this dependence on delicate pressure balance, accuracy is generally limited to swings of ±10°C or so at best.
In comparison, thermal fluid equipment manufacturers report the ability to regulate temperature swings to ±1.5°C or less.

System Cost
Purchase cost of steam systems can be less than thermal fluid systems. With less-complex thermal fluid systems however, there are paybacks: decreased operating costs, maintenance costs, and environmental concerns and increased production and product quality resulting from better control of heating and cooling.