Product category:
Manufacturing Machinery and Plant Equipment
News Release from: Riello | Subject: Modubloc burners
Edited by the Engineeringtalk Editorial
Team on 17 August 2001
Powerful, energy-efficient burners
launched
Riello has announced the addition of two new burners to its Modubloc range, developed for operation in plants where hot water and steam boilers are required, providing outputs of 8,000 and 10,000kW
Riello has announced the addition of two powerful new burners to its Modubloc range, providing outputs of 8,000 and 10,000 kW These models supplement the 4,000 and 6,000 kW versions introduced to the UK earlier this year and extend the scope of applications for which Modubloc can be specified
Modubloc was designed and developed for operation in plants where hot water and steam boilers are required, and is ideally suited to district heating systems or large commercial premises.
The burner is available for use with gas or light oil, or in dual-fuel form, making it a flexible choice to keep liabilities under the new Climate Change Levy to a minimum.
Each variant features microprocessor control of air-to-fuel ratio (micro-modulation) and a variable-geometry combustion head that continuously regulates air velocity.
Air and fuel regulating components - the air damper, butterfly valve and oil valve - are controlled directly by servomotors, avoiding mechanical linkages that can allow drifting of set values over prolonged periods of operation.
All of this adds up to precise control of air/fuel mixture and maximum fuel efficiency at any burner output.
Further Modubloc extension modules may be specified to give additional energy savings.
The 'Exhaust Gas Analyser' module continuously monitors exhaust gas composition via a closed-loop oxygen-sensing circuit and regulates the burner controls to minimise pollutant emissions.
The 'Interface Inverter' module varies the speed of the fan motor in accordance with load, allowing the burner to operate in low-fire mode when demand is less, for example at night.
Riello claims that the combination of these measures results in around five percent energy saving over traditional burners.
Other modules facilitate the management of larger installations.
'Intelligent Boiler Sequencing' distributes total thermal load among the available boilers in a boiler house, provides for connection of up to ten burners working in parallel, and allows steam boilers and hot water boilers to be governed independently of each other.
The 'Data Transfer Interface' module enables control of the combustion system by remote PC, together with the opportunity to download data for record keeping and analysis, and to receive alarm signals via modem.
Despite its high output, the Modubloc burner is extremely quiet to run and simple to maintain.
The mono-block format has the ventilation fan mounted co-axially with the combustion head, which permits acoustic insulation of the main source of noise.
Servicing is straightforward without the need for removal of the burner from the boiler, as the hinged body of the burner may be withdrawn and rotated to one side for access to the combustion head.
To complete the package, in areas where gas pressure is low or subject to fluctuation, Riello can supply matched gas boosters and a choice of gas trains, while for total reliability and peace of mind, a Riello 'Active Service' support contract can be established at time of commissioning for maximum warranty benefits.
Modubloc burners are extensively relied upon throughout mainland Europe, in installations ranging from hot water boilers for railway stations and district heating to steam boilers for hospitals.
Riello is currently taking orders for the burners in the UK.
• Riello: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
