Feature 1 | CHINA Green tech to the fore
Te Naval Architect scans through some of the most advanced environmentally friendly ship designs in China
demands these days are for lower fuel bills and China has been behind the curve compared to Asian rivals Korea and Japan in producing designs to meet this pent up need. However, this is changing. Wang Jinlian, general secretary of the
C
China National Shipbuilding Industry Association (CANSI) stresses: “We need to research and develop the technology which will be compliant with new regulations in the next five to 10 years or even longer. Te market has higher requirements on energy saving, and many domestic brands cannot meet the higher standards and if they do not make design breakthroughs their market share will diminish.” Nevertheless, there are genuine signs of a
green revolution across many yards in China. For instance, Jiangsu Hantong Ship Heavy
Industry and Germany’s Jade Werk, GL, TECHNOLOGY and MAN Diesel & Turbo signed a contract for technical cooperation for China’s first 50,000dwt hybrid LNG-fuelled ship on 16 May. Te newbuilding will meet the IMO’s
Energy Efficiency Design Index (EEDI) attestation. Te hybrid vessel, scheduled to be delivered in April 2014, will reduce harmful substances by 33%, as well as cut CO2
emissions by 5,500tonnes every year,
bringing annual fuel savings of more than US$3 million. In June a new handysize bulk carrier
concept design was introduced - the Green Dolphin – which uses existing technologies to meet owners’ needs for fuel efficiency and operational flexibility while also being ready for future environmental regulations. It has been created by the Shanghai
Merchant Ship Design & Research Institute (SDARI) and development partners DNV and Wärtsilä. “The focus has been on reducing the
fuel consumption while giving owners different options to meet the future expected environmental regulations,” says Hu Jin-Tao, the president of SDARI. “Te concept design
58
hina is playing a game of catch up when it comes to the world of green ship technology. Shipowners’
Shanghai’s cruise terminal is getting busier. The cruise market in China is the fastest growing in the world
is ready for the owners’ preferred choice, whether that is to run on heavy fuel oil using emission treatment systems or to switch to low sulphur fuels or LNG. Te Green Dolphin concept design is a
five-cargo-hold double-hull bulk carrier built to common structural rules (CSR) specifications and meets current and future expected air and water emissions regulations. The design aims to be fuel-efficient and maintenance–friendly, with high operational flexibility.” The Wärtsilä two-stroke low-speed
RT-flex50 main engine is Tier II compliant and can easily be retrofitted to dual-fuel engine in the near future. Multiple fuel tanks allow for strategic purchasing of heavy fuel oil, low sulphur fuel and distillates. “Design variants are available for fuel
switching systems, installation of selective catalytic reduction and exhaust gas scrubbing systems and, in the near future, the use of LNG as fuel” says Giulio Tirelli, business development director of Wärtsilä – Ship Power. “Te concept design also includes shaft torque and exhaust gas monitoring equipment to maximise the fuel consumption optimisation possibilities while constantly monitoring emissions.”
Meanwhile, Lloyd’s Register (LR)
supervised the design appraisal, build and sea trials, verifying the performance of a new, modified 57,000dwt ship based on a SDARI design. Aquila, the first in a new series of supramax bulk carrier designs, optimised to burn less fuel oil was delivered in China on the eve of the Lunar New Year holidays. The efficiency improvements have been achieved by carrying out a number of straightforward – but effective – changes including: de-rating the main engine, a new propeller design which has been optimised for the de-rated engine, and fitting a mewis duct. Te daily main engine consumption at
a speed of 14knots at ballast draſt, which would have been about 29.4 tonnes, is now about 26tonnes and the daily main engine consumption at a speed of 13.5knots at design draſt, which would have been about 29.8tonnes daily, is now about 26.30tonnes. Te engine’s output has been reduced by nearly 1,000kW to 8,500kW. LR was also involved in another green
ship design. The British classification society and Shanghai-based Bestway Marine Engineering Design have completed their joint-industry project to develop a
The Naval Architect September 2012
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132