Swedish shipowner Donsö Shipping has placed a contract with Norwegian technology company Hydroniq Coolers to deliver hull-integrated seawater cooling systems to two oil product and chemical tankers currently under construction
Hydroniq Coolers has chosen the start of Donsö Shipping Meet week to announce that the two Donsö Shipping AB 22,000 dwt oil products and chemical tankers on order at Wuhu Shipyard in China will be fitted with Hydroniq Coolers’ rack cooling system.
Hydroniq Coolers’ sales manager Håvard Tveitane said “The cooling principle of the Rack cooler secures safe, continuous and maintenance-friendly cooling of the equipment on board the vessel in addition to being very energy efficient. Low maintenance requirements translate to lower operating expenditure for Donsö Shipping.”
The vessels are designed by FKAB, based on a well-known low-resistance hull design. The vessel design focuses on safety and reducing the environmental impact. The two vessels are due for delivery in 2021. Hydroniq Coolers will deliver both Hydroniq Rack seawater cooling systems during 2020. The company has not disclosed the value of the contract.
The Hydroniq Rack seawater cooler is uniquely integrated in the hull below the main engineroom of the vessel. Marine cooling systems are utilised to reduce temperatures in the ships’ engines and other auxiliary systems using seawater.
The Hydroniq Rack system is designed to increase intervals between each clean and reduce cleaning time. It does not require drydocking for maintenance and cleaning as the coolers can be extracted from below the engineroom, even while at sea.
The seawater cooling system for Donsö Shipping’s new tankers will also feature a dedicated chilled water bundle. This bundle allows seawater to bypass the chilled water unit and flow directly into the Rack cooler when the seawater temperature is below 14ºC.
“This ingenious solution cuts energy consumption considerably, plus it further reduces maintenance requirements on the system. We are proud to be a supplier for these vessels,” added Mr Tveitane.
The two 167.7 m long vessels will be ice strengthened to ice class 1A. The propulsion system includes LNG fuel as marine fuel and shore connection for port operations. The design uses a 1,000 kWh battery-pack. The 22,000-dwt vessels will have a cargo capacity of 28,000 m3.