FINLAND Energy audits bring significant savings
FINNISH engineering company Deltamarin and its clients have come to realise the potential for combined energy audits and efficient training as tools for securing the most fuel-efficiency.
D
ELTAMARIN is now utilising its in-house know-how in offering energy audits for
ship owners as well as training for the crew targeted at energy efficient operation of the rather complicated systems onboard cruise ships. Energy audits are carried out during the design and building period of a newbuilding and during operation. In today’s search for fuel cost savings, there
is bigger potential for savings in operational solutions than in the hydrodynamic and related design aspects of the vessel, which are already becoming rather optimised. Deltamarin has built eight training
programmes, held at its own offices, comprising 10-day courses to train operators about the principal sources of fuel consumption onboard cruise ships, such as propulsion, air conditioning and energy production, and how to operate the vessels and their systems so that energy consumption is minimised. It is also offering shorter training sessions, lasting three to four days. Several cruise and ferry operators are taking up these training programmes, which began with
Surprisingly, much energy can be saved by this. Energy audits of complete fleets are being carried out, and in most cases they are combined with efficient officer and superintendent training. According to Deltamarin, typically 10-
Royal Caribbean Cruise Line and Celebrity Cruises two years ago. To date, about 120 persons have been trained. Deltamarin’s head office is based near Aker Yard's Turku Shipyard, which allows for convenient crew training while cruise ships are being finalised at the yard. Training is also arranged at the client’s premises, onboard or ashore. Simulations and calculations are done of
the operation of the ship and its systems in real operational conditions, in order to learn how to operate them at maximum efficiency.
15 fuel saving actions can be found and recommended, with the audit paying back in two to six months. Deltamarin has found that a typical fuel saving potential has been between 5%-12%, but even higher figures have been achieved. The main areas where fuel savings have
been recouped in the case of cruise ships has been in HVAC, desalination and heat recovery plant, in addition to traditional propulsion and hull optimisation. Deltamarin notes that theoretical calculations at project and design stages, as done today, do not show the main consumers onboard. Efficient use of heat energy can generate substantial fuel savings.
Measured fuel consumption on a 70,000gt cruise ship. The energy consumed by the HVAC systems was found to be 34%, even more than the 33% share of fuel consumption required to fulfil the particular itinerary of the vessel.
16
THE NAVAL ARCHITECT FEBRUARY 2007
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