‘SUPER’ HEATERS

THE WORLD’S MOST EFFICIENT SOLID FUEL BASED INDIRECT FIRED HEATERS FOR THE TEA INDUSTRY

Introduced to the Tea Industry in the mid-eighties and subsequently evolved into the revolutionary Phase – II design at the beginning of the new millennium, the ‘SUPER’ heater remains AARKAY’s biggest contribution to the Industry at large. In an industry plagued with high manufacturing costs, the ‘SUPER’ heater guarantees coal ratios as low as 0.4 per kg. of made tea. With close to 150 installations in North India alone, the ‘SUPER’ has found industry - wide acceptance with both the corporate sector as well as the private bought leaf / plantation sector.

The SUPER heaters can be fired with either coal -  lump or dust, leco, firewood, gas or oil. They come with AARKAY’s hassle-free COMPOSITE GUARANTEE and SINGLE POINT SERVICE since AARKAY is also a leading manufacturer of Chain Grate Stokers with more than 200 installations.

It was in the mid-eighties that Aarkay launched its range of ‘SUPER’ – Phase I heaters, coining the term ‘PASS’ in the process. The SUPER heaters sought to seek a balance between the flow of the process air and the path of the flue gas within the heater. The 4 - stack Tube Bank structure of the fourth-Generation ‘Special’ Heaters was retained. A unique cross- path was evolved for the flow of process air. The SIX PASS was coined to denote this new flow-design of process air. Coupled with automated coal stoking (Aarkay remains, to date, the only heater manufacturer to offer the complete single-point heating solution with automated stoking), the result was phenomenal – a range of super-efficient heaters which could take upon any Dryer, Conventional or Fluidized, and was capable of giving unheard-of fuel economies. The chimney temperature was brought down much below the targeted 115 degree mark and the Dryer Inlet Temperature would remain rock-steady in any climatic conditions.  

Continuous on-site R&D and the undying commitment to pioneering and excellence finally led to the evolution of the Phase – II design, a revolutionary new heating system for the new Millennium. The Phase –II design has a unique 6-stack structure. The robust simplicity of the Phase – I design has been retained. The flow of the process air has been re-designed to include initial passage through the new in-built heat recovery unit which recycles the spent heat from the exiting flue gas before discharging it through the chimney. The Phase –II design employs a staggering figure of nearly 400 tubes of different shapes, sizes and design.

It may be noted here that the ‘SUPER’ theory does not advocate the replacement of C.I. tube stacks with fabricated M.S. tubes in the main heater body as the rough-surfaced oval CI Tubes promise better heat absorption and a much higher life span as compared to their smoothened round fabricated counterparts.   

TECHNICAL SPECIFICATIONS

Hot Air Output Capacity (Kgs./hr. at 140º C)

Heat Generation Capacity (K. Cal./hr. at 5000 K. Cal / kg. of coal)

Fuel Consumption (per hour)

VERSATILE

The SUPER comes in varying sizes to suit various Dryer capacities and can be fired with either coal, leco, firewood, gas or oil.

FUEL ECONOMY & HEAT TRANSFER

The SUPER Phase – I ( SIX PASS ) and Phase- II ( EIGHT PASS ) models optimize the heat transfer process between the flue gas and the process air and thereby offer unprecedented fuel economies as low as 0.4 – 0.5 kg. of coal / kg. of made tea.

BETTER HEAT RETENTION & ROCK STEADY DRYER INLET TEMPERATURE

The ‘SUPER’ design optimizes heat retention inside the heater and reduces heat loss. The Dryer Inlet temperatures remain rock-steady even in the most adverse climatic conditions.

CASTING LIFE & MAINTENANCE

All Cast Iron parts are made from superior quality Graded Castings for better durability and heat resistance. As there are no moving parts, very minimal maintenance is required on a regular basis except for cleaning of tube banks. Provision of conveniently placed Cleaning and Soot removal doors at the front and rear ends facilitate easy tube cleaning, soot removal and casting inspection. 

EASY & QUICK INSTALLATION

‘SUPER’ Heaters can be erected on a firm and rigid 9” thick concrete base set on solid Earth. No excavation and no foundation bolts are required.

INDUCED DRAFT SYSTEM

The ‘SUPER’ heaters are designed to handle both Induced and Forced Air. ‘SUPER’ Induced Draft fans operate on relatively low RPM, thereby enhancing impeller life and reducing risk of back-pressure. Inlet and bypass dampers are provided in the fan for better control.  

TUBE BANK STACKS

All the Tube Bank Stacks in the Main heater body are made from Cast Iron. The single-cast CI Tube Bank with rough-surfaced oval CI Tubes promise better heat absorption and a much higher life span as compared to its fabricated MS counterpart with smoothened round tubes.         

HEAT RECOVERY SYSTEM

‘SUPER’ Phase-II Heaters are fitted with unique built-in Heat Recovery Units that pre-heat the process air with recycled waste heat with the result of giving unprecedented and unmatched fuel economies.

MECHANICAL STOKING & A COMPOSITE GUARANTEE