Near Marine Newsletter Issue 2 2012

AlfaNova M HP 400 reduces total cost of ownership for LPG reliquefaction

Safer. Smaller. Lighter in weight. These are three good reasons to consider replacing conventional exchangers onboard liquefied petroleum gas (LPG) carriers with the new AlfaNovaM (ANM) HP 400. Engineered for use as a LPG cargo condenser and/or heater, this gasket-free, all-stainless plate heat exchanger offers higher efficiency, greater temperature flexibility, and lower total cost of ownership too.

Looking for ways to meet the requirements of the seventh edition of the "Ship Inspection Report for Chemical and Gas Tankers" published by the Chemical Distribution Institute (CDI)1? Look no further than the ANM HP 400. Alfa Laval has adapted our proven fusion-bonded AlfaNova M heat exchangers to the cargo conditioning requirements of LPGs for use in indirect reliquefaction systems.


Direct operating condenser               Indirect operating condenser with ANM

The indirect system offers these major advantages:

• No risk of leakage: In the unlikely event of a gas leak in the ANM HP 400, gas enters a closed intermediate loop and remains onboard unlike direct systems where gas can leak to seawater discharge side of the condenser and into the harbour.
• Maintains high performance: The seawater side is fully accessible for cleaning purposes in the gasketed seawater heat exchanger. A high performance could therefore be maintained without CIP solutions.
• The seawater cooler is necessary in order to fulfil the Chemical Distribution Institute (CDI) directives for cascade systems used in cargo heating. The same seawater cooler can be used in a cascade system when condensing cargo in an indirect configuration. An indirect versus a direct operating cargo condenser is hence beneficial from a commercial point of view since no titanium material is needed in the indirect cargo condenser.

Using the ANM HP 400 as a cargo condenser in indirect systems offers:

• Energy savings: The ANM HP 400 uses a lower condensing pressure than other cargo condensers.
• Faster port-to-port time:  Compared to other condensers, the ANM HP 400 has higher condensing capacities, which reduces port-to-port time and thereby raises transportation efficiency and lowers costs.
• Lightweight and compact: At just under 400 kgs. (900 lbs.), the ANM HP 400 is much lighter and has a smaller footprint (0.5 m2/ 5.4 sq. ft.) than comparable condensers.

Lauritzen Kosan LPG carrier first with ANM HP 400

Danish shipping power Lauritzen Kosan, the gas carrier division of J. Lauritzen A/S, is the first to Alfa Novainstall the ANM HP 400 on one of its LPG carriers. The company currently operates six LPG carriers that use indirect systems with central coolers and stainless steel AlfaRex plate heat exchangers as cargo condensers. By installing the ANM HP 400 alongside the AlfaRex unit, Lauritzen Kosan intends to minimize power consumption in order to keep the operating costs of its reliquefaction plant as low as possible and reduce port-to-port time.

LNG fuel applications ahead?

With interest in the LPG cargo condenser/heater growing, Alfa Laval is also exploring the possibilities of applying fusion-bonding technology to marine LNG fuel applications.

We are aware of the keen interest in using liquefied natural gas (LNG) as fuel in order to comply with the new International Maritime Organization regulations in sulphur emission control areas (SECAs),” says Johan Lennartsson, Alfa Laval Marine & Diesel’s regional marketing manager responsible for working with contractors and shipyards for liquid gas carriers. “We believe that, in the future, owners of LNG-fuelled vessels together with Alfa Laval will find many uses for ANM HP 400 in LNG fuel-handling systems."

1) CDI is one of the major standard vetting inspection criteria on the market for LPG vessels. The objective of CDI is to provide a single set of reliable and consistent inspection data that chemical companies can use with confidence when chartering a LPG vessel.

 Alfa Nova

About AlfaNova M HP 400

Newly introduced to the marine portfolio, the AlfaNova M HP 400 is a fusion-bonded plate heat exchanger that operates at temperatures ranging from between -196 oC to +550 oC. Constructed completely in stainless steel, it can be used for LPG/E reliquefaction of a wide range of aggressive media, including ammonia, as for LNG fuel duties. This is made possible by Alfa Laval’s uniquely patented active fusion-bonding technology.


Liquefied petroleum gas (LPG) is a portable, clean and efficient energy source, which is readily available to consumers around the world. LPG is a co-product of natural gas and crude oil production; its unique properties make it a versatile energy source that can be used in more than 1,000 different applications.

LPG is a clean energy solution, which emits 50% less CO2 emissions than coal and 20% less than heating oil, making it ideal for use in heating and cooking. LPG also improves both indoor and outdoor air quality by substantially reducing pollutants, which are hazardous to health such as SOx, NOx and particulate matter.

LPG accounts for approximately 65% of all cargo shipped by LPG carriers, followed by ammonia and petrochemicals (ethylene, propylene, vinyl chloride monomer, butadiene).

 Lauritzen Kosan


Feature story

Optimize your ship’s fuel treatment line and save money



Want to recover more than 150 tons of fuel oil over an 18-month period? Or improve engine efficiency by up to 12%, save USD 2.4 million and cut carbon emissions by 12,000 tonnes? Or save another 100 tonnes of fuel oil, reduce carbon emissions by 300 tonnes and save USD 60,000 on HFO costs? Or better yet combine all of these scenarios and let the savings add up on your bottom line? 

 Start saving in your engine room 







PureDry: a revolutionary new separator that can cut your fuel bill by 2%!

With high oil prices, bunker fuel oil accounting for as much as 60% of a vessel’s operating costs and increasingly stringent emission controls, a fuel strategy and ways to cut fuel bills are at the top of the agenda for most ship owners and operators today.

How much would you save in a year if you could cut your fuel costs by 2%? Believe it or not, it’s now possible with PureDry from Alfa Laval – a revolutionary new separator with a twist!

 Waste fuel recovery using PureDry

First PureBilge order by Korean oil and gas industry

A major UK-based multinational oil and gas services company placed an order for the purchase of the Alfa Laval PureBilge 5005 bilge water treatment system equipped with an electric heater for an ultra-deepwater drillship. The order marks the first of its kind for the oil and gas industry for a PureBilge system in Korea.

 Why choose PureBilge 

PureThinking at GreenShip World Asia

Innovative environmental solutions by Alfa Laval took centre stage at GreenShip World Asia 2012, held in Shanghai, June 6-8. The conference combined a commercial exhibition and a strategic forum for operators and leading global services providers to deepen their involvement in the shipbuliding industry.

 Growing interest for sustainable solutions 

Product news

Genuine spare parts kit for cost-savings and peace of mind

 The new Aalborg OEM Emergency Kit is a smart way to avoid the high cost of rush orders for spare parts for your burner and control system included in Alfa Laval Aalborg low sulphur fuel oil (LSFO) upgrades? It is guaranteed to have the standard spare parts you need on board specifically for your vessel. What better way to save time and money?

 Customize a kit for your Alfa Laval Aalborg boiler 


Turkish fleet to meet ECA emissions limits with ACS system

To ensure compliance to the 2015 Emission Control Area (ECA) 0.1% sulphur limit, Turkish shipping company Geden Lines will outfit its fleet of 40 vessels with the Alfa Laval Advanced Cooling System (ACS). This fully automatic fuel cooling system facilitates fuel oil changeover from HFO to LSFO and back again, regardless of fuel quality, while maintaining fuel viscosity within the limits set by engine manufacturers.

 ACS facilitates low-sulphur fuel compliance


New waste heat recovery economizer boosts fuel efficiency further

Waste heat recovery (WHR) systems after the main engines have been used for years. Now there’s a new way to boost fuel efficiency by locating WHR system after the auxiliary engines. The innovative Aalborg XS-TC7A waste heat recovery (WHR) economizer does just that, increasing fuel efficiency while lowering emissions.

 Realize greater fuel savings

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