Opex-A

Osby Parca Opex-Å

Steam boiler for oil or gas, 150–2000 kW

Compact and reliable steam boiler Opex-Е is a compact steam boiler supplied in low pressure versions, six sizes 1(50–1000 kW), and high pressure versions, nine sizes (150–2000 kW). The boiler consists of a horizontal pressure vessel insulated with mineral wool. The system is protected by a painted AluZinc sheet steel cover.

Opex-Е is fired with either oil or gas. Combustion takes place in the centre of the combustion chamber. The fully water cooled rear wall returns fumes along the combustion chamber exterior walls, after which the fumes enter the flue gas tubes.

The combustion chamber and the flue gas tubes are accessible through the opening of the burner hatch on the boiler’s short side. The design provides a compact and high efficiency boiler for oil and gas firing. The high efficiency leads to a safe total combustion of the fuel, this is an important factor with respect to environmental considerations.

The boilers are supplied with a factory fitted control system, burner and fittings.

High pressure boilers are available in 9 sizes (150–2000 kW). Design pressure for these is 10 or 16 bar. Low pressure boilers are available in 6 sizes (150–1000 kW). Design pressure for these is 1 bar. Sheet steel, tubing and tie rod materials are made of P 265 GH and P 235 GH materials. Insulation uses 100 mm mineral wool mats covered with 1 mm steel plate. Rust protection treatment is carried out before insulating.

Scope of Supply

The boilers are delivered with fitted control system, mounted burner and fixtures. Eachunit is tested before being dispatched from the manufacturing plant. Right hung front hatch is standard. Firing tools are included. When ordering, specify on what side the hatch shall be hung (right or left), chosen burner type (if not bought from Osby Parca) and desired output.

Control System Cabinet

The control system cabinet is fitted to one of the boiler’s long sides, protection class IP 54. The following equipment is installed in the cabinet:

• Mains switch
• Fuses
• Contactor relays
• Automatic circ. breaker
• Level control relay with boiler dryout protection, low level, pump start & stop
• Circuit breaker, burner
• Relays, plinths, markings, wiring
• Electric scheme for control cabinet and external connections

Low pressure boiler Pressure: 1 bar Temp.: 120°C Low pressure boiler Pressure: 1 bar Temp.: 120°C

High Pressure Version – Data

Dimensions and weights

Low Pressure Version – Data

Technical Data

Boiler Room Layout Example

Space requirements	Water quality
	When working with steam boilers, water quality is especially important, partly because impure water gives impure steam, but also because impure water corrodes the pipes and the pressure vessel, therefore water treatment equipment has to be applied for the warranty to be valid. Using analysis data or water samples, we can provide a suggestion for suitable equipment for water treatment.

High pressure version

A. High pressure boiler B. Burner C. Control system cabinet D. Level sensor E. Steam regulation valve F. Safety valves G. Pressure gauge H. Pressure switch with manual   reset J. Operation pressure switch K. Water pocket pipe L. Bottom blowing valve M. Water level indicator N. Feed water valve Options : 1. Feed water tank 2. Feed water pump 3. Dosing system 4. Water softener 5. Pressure release tank 6. Desalination

Low pressure version

A. Low pressure steam boiler B. Burner C. Control system cabinet D. Level sensor E. Safety valve F. Pressure gauge G. Pressure swich with manual reset H. Operation pressure switch J. Water pocket pipe K. Steam regulation valve L. Bottom blow valve M. Water level indicator N. Feed water valve O. Solenoid valve feed water Options: 1. Dosing system 2. Water softener 3. Desalination