Tsuneishi Shipbuilding Company and Miura Co., Ltd. have co-developed the shipbuilding industry’s first external “supplemental machine heat collecting unit” (patent pending).
“Supplemental Machine Heat Collecting Unit” allows collection of exhaust heat from the generator equipped in the ship as a heat resource. The unit converts the heat to energy for the supplemental boiler and can reduce the supplemental boiler’s fuel consumption by 12-25 %.
Originally, the heat resources aboard the ship used exhaust heat from the main engine. But as efforts to reduce exhaust CO2 and NOx have lowered the temperature of exhaust from the main engine, it has become difficult to obtain the required energy. Additionally, the exhaust heat of an onboard generator inside the ship has less energy than the main engine. Therefore this couldn’t be put to effective use either.
The “Supplemental machine heat collecting unit” which has now been developed can be installed to the respective generators to connect to a main engine’s supplemental boiler which used to be the exhaust machine heat collecting unit. These new supplemental machine heat collecting units can collect exhaust heat from multiple generators efficiently and complement the main engine’s utilization of exhaust heat.
Tsuneishi Shipbuilding Company has already decided to introduce this “supplemental machine heat collection unit” to some ships which will be built after 2014.
Features
[mappress] Press release, July 11, 2013