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

  • MAN reveals EU Stage V engine solution
    April 12, 2016
    MAN has revealed two new ranges of off-highway engines that are said to lay the foundation of its EU Stage V emissions regulation strategy. The two ranges include a six-cylinder 15.26 litre engine offering outputs from 415-485kW and a larger 24.24 litre V12 engine with power outputs from 588-816kW. Both meet Tier 4 Final/EU Stage IV emissions and are also said to be EU Stage V ready. The six-cylinder engine, badged D3876 LE12x, uses variable geometry turbocharging and a 2,500 bar fuel injection pressure to
  • Volvo CE’s new asphalt compactors
    April 30, 2021
    Volvo CE is now offering new 10tonne asphalt compactors
  • Smoother surfaces
    September 11, 2014
    Efficient new soil compaction machines featuring the latest technology are now coming to market – Mike Woof reports The start of 2014 has seen a major development for the construction equipment sector, with the Tier 4 Final emissions requirements at last beginning to take effect. The implications of the drive towards the introduction of low emission engine technology have been seen right across the off-highway machinery equipment industry, and the soil compaction segment is no exception.
  • Efficient new asphalt compactors from leading firms
    March 12, 2014
    New asphalt compactors from leading firms offer greater versatility and lower running costs - Mike Woof writes