Digital Extra
Property Management Select Facing up to biomass emissions
Hoval has launched its new CF ceramic filter for filtering particulate emissions from any make of new or existing biomass boiler. Capable of removing up to 96% of particles down to a diameter of 2.5 microns (PM2.5), Hoval says the CF allays many of the current concerns about particulate emissions from biomass installations. When EC Directive 2008/50/EC, Ambient Air Quality and Cleaner Air for Europe, comes into force in June 2010 it could create a difficult situation for biomass boilers. This is because the Directive seeks to create a control framework for particulate emissions down to PM2.5, and the current cyclone and multi-cyclone technologies only remove particles down to 10 microns (PM10). Potentially, this could severely curtail the
use of biomass in the UK and some local authorities are already considering a ban. The Hoval CF contains a matrix of
porous ceramic tubes which are closed at the lower end. As flue gases are drawn through the filter by an inline fan, the gases are able to pass through the walls of the ceramic tubes, while particles are trapped. At regular intervals (timed and/or in response to a pressure drop across the filter) a pulse of air is used to dislodge the particles, which fall into a collection bin.
The CF has been developed from
technologies widely used in the aluminium smelting industry, and optimised for use with biomass boilers.
Email:
hoval@hoval.co.uk Web:
www.hoval.co.uk
Demand for refurbishment soars
As the economic climate is making more building operators opt for a refurbishment strategy rather than replacement, Envirotec has reported a sharp increase in demand for its comprehensive refurbishment service for air handling units (AHUs). “Even 20-30 year old AHUs can be
successfully refurbished with a major improvement in performance – and the financial and environmental savings are very significant,” explains Envirotec’s Ron Flewett. “Our experience over many years of refurbishing AHUs is that savings, compared to buying new units, typically range from 20 to 50%. Furthermore, the end user will benefit from additional life cycle cost savings through reduced maintenance costs and improved energy efficiency, as well as adopting a more sustainable strategy.” According to Envirotec, the scope of an
AHU refurbishment can range from replacement of components with modern, more efficient designs through to replacement of whole sections or addition of new sections. The latter option enables duties to be increased very cost- effectively, perhaps in response to changes in building usage. In addition, a well-planned
refurbishment will be less disruptive to the building’s occupants, as the work can be planned in phases. Refurbishment is also often a popular option where access to existing plant is difficult. Web:
www.envirotec.co.uk
70 l Property Management Select l july/august 2010 l
www.pm-select.co.uk
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