Skip to main content

Quieter demolition

Hydrodemolition specialist Aquajet is offering an improved, low-noise power pack for its equipment. Redesigned to meet tough restrictions on noise emissions for equipment used in urban locations, the power pack is also more economical on fuel, an important point given fast rising fuel costs. The firm's hydrodemolition unit is aimed at concrete scarification and removal, and the noise levels from the new Ecosilence Power Pack are so low that normal conversation can continue alongside as it operates. Accordin
July 30, 2012 Read time: 2 mins
Hydrodemolition specialist 2784 Aquajet is offering an improved, low-noise power pack for its equipment.

Redesigned to meet tough restrictions on noise emissions for equipment used in urban locations, the power pack is also more economical on fuel, an important point given fast rising fuel costs.

The firm's hydrodemolition unit is aimed at concrete scarification and removal, and the noise levels from the new Ecosilence Power Pack are so low that normal conversation can continue alongside as it operates.

According to Aquajet, the power pack generates 66.5dB, at least 10dB lower than conventional models (conventional units generate noise levels from 78dB-82dB, depending on the manufacturer and application).

Ecosilence Power Pack's reduced fuel consumption is claimed to save an estimated €35,000/year in typical operation. Conventional power packs use from 105-120litres/hr of fuel: the improved Ecosilence unit uses just 70litres/hr when producing a flow rate of 189litres/min at 1000bar at 73% power.

Improvements include a 40% increase in sound insulation with tailor-made seals for doors and hatches to cut noise propagation and acoustic surface treatment and sound-absorbing insulation to reduce noise and vibrations in the sides.

The Ecosilence powerpack has a sophisticated heat exchange system in place of conventional cooling as well as a new exhaust silencer. Other improvements include a new vibration dampener as well as upgrades to internal pipes, hoses and tubing.

Power now comes from a 783 Volvo Penta marine diesel engine, which delivers a high torque range from 1,100-1,800 rpm, as well as having low noise characteristics and high fuel efficiency. The high pressure water output is from a 522kW plunger pump.

For more information on companies in this article

Related Content

  • Work on St Petersburg bridge project
    June 20, 2016
    Contractor ICA Construction used two Aquajet robotic hydrodemolition machines at the top of a 120m-high bridge pylon located in the city of St Petersburg. The two Aquajet robotic water cutters were used to remove surplus concrete from around the inner steel structure of the bridge pylon. This link spans the River Neva and forms part of the Western High-Speed Diameter (WHSD) route in St Petersburg. The WHSD is a highly important route for the region and will provide a key connection between the Scandinavi
  • Engine technology continues to advance, with lower emissions being one focus
    May 13, 2015
    Engine technology is advancing, with lower emissions, lower fuel consumption and longer service intervals being key developments - Mike Woof reviews some of the latest developments A huge investment in diesel engine technologies in recent years has seen manufacturers develop low emission diesels that are quieter, cleaner and use less fuel, while in many instances delivering more power. For machine manufacturers this has been a major benefit, allowing them to meet tougher regulations on noise and exhaust
  • Powertrain innovations delivering cleaner solutions
    May 10, 2018
    The push towards cleaner-running driveline developments from engine firms is continuing - Mike Woof writes. Sophisticated driveline developments are being seen right across the engine and drivetrain segment, with new low emission technologies being unveiled. High performance and extended service intervals are claimed, while tailpipe emissions have been reduced to meet the coming EU Stage V and latest US Tier 4 Final requirements. But different firms are taking different routes to delivering cleaner tailp
  • Engine manufacturers meeting emissions deadlines
    February 10, 2012
    Engine manufacturers have had to jump through regulatory hoops in recent years, meeting requirements for diesels with ever cleaner exhaust emissions. When this programme was first proposed, many believed the final aims could not be achieved. However on January 1st 2011, the Tier 4 Interim/Stage IIIB emissions regulations will come into force in North America and Europe and all the major diesel manufacturers will have suitable products at the ready. The Tier 4 Interim/Stage IIIB emissions regulations require