Science of Silence
Halyard

Superyacht Solutions

Superyacht Solutions

Halyard designs and manufactures bespoke water injected exhaust systems based on the specific project requirements of the vessel, taking into consideration the engine size, space availability, output capacity and the noise attenuation level requirements.

Using a variety of materials from stainless steel, Alloy 625, Super Duplex and GRP components our design and project team will work with you to produce a variety of solutions from dry, wet and combined systems that meet the necessary approval requirements such as Lloyds.

Through our partnership with the ISVR, Halyard is able to produce specialist targeted noise frequency reductions though our experience of delivering to vessels of all sizes on a global scale.

Halyard designs and manufactures bespoke water injected exhaust systems based on the specific project requirements of the vessel, taking into consideration the generator engines and auxiliaries size requirements and layouts.

Using a variety of materials from stainless steel, Alloy 625, Super Duplex and GRP components our design and project team will work with you to produce a variety of solutions from dry, wet and combined systems that meet the necessary approval requirements such as Lloyds.

Through our partnership with the ISVR, Halyard is able to produce specialist targeted noise frequency reductions though our experience of delivering to vessels of all sizes on a global scale.

PureGen has been designed primarily for Superyachts that use diesel engines for generating electrical power. A common issue with all diesel engines is soot - greasy, unburned deposits that escapes with the exhaust gas. These deposits can spoil the look of valuable wooden decks and they also float on the water - potentially forming an oily sheen on the surface, and thus covering bathers with soot and greasy deposits.

PureGen has been developed by Halyard to remove soot from generator exhausts by using two methods - PureGen Continuous or PureGen Disposable. Both methods operate in tandem with the generator's exhaust gas system and it can be installed in either a 'wet' or a 'dry' exhaust system. PureGen Continuous is designed for generators from 40KW to 500KW with soot particle output of 1gm/kwh and works by passing the exhaust gas through an electric heater which intermittently cuts in to raise the temperature of the exhaust to ensure that all the soot is destroyed and burnt from the catalytically coated ceramic filter. The ceramic filter is therefore continuously cleansed by the heater element and thereby only adds between 2.5mbar and 10mabr in back pressure in the exhaust system and the only maintenance required is reversing the filter every 6 months or so. The 10kw electrical pre-heater can be programmed to cut in for 10 minutes each hour, the timing for the pre-heater is defined for each installation.

The PureGen Disposable is designed for generators under 40kw with a soot particle output of 1gm/kWh and uses a replaceable cartridge filter. About 95% of soot is removed and the need for replacement is defined by an increase in back pressure and replacing a cartridge is less than an hour’s work.

Halyard