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.
Road Structures

For more information on companies in this article

Related Content

  • Emissions regulation leads to efficiency gains
    November 6, 2012
    Innovative technology is use is providing efficient, clean burning engines - Mike Woof reports The development of new diesel engine technology has, for the off-highway equipment sector, been the single most expensive research field for the industry since these machines first started being manufactured. Aimed at reducing the emissions of nitrous oxide as well as particulate matter, in a phased series of stages the engine emission improvements will make major changes to the construction sector. In real world
    Read More
  • Major firms are offering key diesel developments
    September 26, 2013
    New diesel developments from JCB and Volvo Innovative diesel technologies are being developed by all the major engine manufacturers at present. New emission requirements have pushed the boundaries in terms of technology, with all the firms working on new systems to ensure their products meet requirements. And companies are also developing new engine sizes to broaden their range of offerings to the market.
    Read More
  • Utility machines with cutting edge design and efficiency
    May 29, 2013
    Utility machines with standout efficiency and cutting-edge cab design have come onto the market during the first few months of 2013. Guy Woodford looks at some of them. Case Construction Equipment and New Holland Construction have brought out what they claim are the market’s first Tier 4 Final emissions standard midi-excavators. The CX75C SR and CX80C models from Case are said to offer more performance power and greater operator cabin comfort than previous models. Tier 4 Final standards are said to have bee
    Read More
  • Meeting engine emission regulations challenges
    February 16, 2012
    New engine emission regulations pose major challenges for engine manufacturers - Geoff Ashcroft reports. The arrival of emissions regulations in January for engines over 130kW has meant that engine makers have adopted varied technologies to meet and exceed those goals. For the end user though, buying new kit that complies with Tier 4 Interim/Stage IIIB emissions regulations is likely to carry additional costs.
    Read More

Highlighted Content