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

  • 'Quiet' work in Stockholm
    July 24, 2012
    Aquajet's new Ecosilence Power Pack has been tested to its limits on the tunnel/bridge renovation work in the city's historic Old Town and has exceeded all expectations, according to E-Schakt's project supervisor, Andreas Nordstrom. Equipment from the Swedish company, including Ecosilence making its debut, is being used in the tunnel and on the 1.2km Central Bridge (or 'Three Bridges'), which was built in the 1950s and which links the northern district of Norrmalm and the southern district of Södermalm. It
  • Volvo Penta launches new power generation engines for genset market
    February 24, 2017
    Volvo Penta is launching two new diesel engines, the TWD1645GE and TWD1644GE, which it says extends its competitive range. The 16litre TWD1645GE has been designed to produce up to 10% more power compared to previous models, and its switchable rpm settings mean that it can be used anywhere in the world.
  • New innovations are being developed in diesel engines and drive technologies
    April 24, 2013
    Innovative new engine emissions control technology is coming to market - Mike Woof reports. The diesel engine sector has been one of the most active and innovative areas for technological development in the past 10 years. Engine firms have invested enormous sums in developing new, low emissions technologies that reduce the quantities of nitrous oxide and particulates from the tailpipe. All the firms have taken a different approach in this regard, using various combinations of the technologies available such
  • Engine innovations will cut emissions and increase performance
    October 1, 2014
    A series of innovations in engine technology will cut emissions and deliver fuel savings for customers - Mike Woof writes The start of 2014 saw the commencement of the final phase of the current set of engine emissions requirements for Europe and North America. With the introduction of the first set of Tier 4 Final/ Stage IIV emissions regulations, new generation diesel engines used in construction will deliver cleaner operating performance than ever before. These highly efficient engines have been devel