Inverness Marina building hots up with underwater solution

Inverness Marina building hots up with underwater solution

A newly opened Scottish marina building is using renewable energy from the sea to meet its extensive heating and hot water needs, following the installation of a NIBE ground source heat pump system.

Operated by Inverness Marina, the new-build shore facilities now provide visiting yacht crews with shower and laundry facilities. The building is also home to a classroom area and the main marina office. With such high heat requirements, Inverness Marina approached local renewable energy experts Black Isle Renewables for a cost-effective, efficient alternative to more conventional oil or LPG heating.
The Black Isle team specified and fitted a NIBE F1145 ground source heat pump as the solution – using a 400m closed-loop pipe collector system to harness heat from the marina and provide space heating and hot water for the building. Iain Thomas, managing director at Black Isle Renewables, explains: “Research shows that the water temperature at sea bed level in the marina is a relatively constant 10°C all year round. Therefore, it made perfect sense to make the most of the natural surrounding resource and use this renewable energy to meet the facilities’ high heat demand.
“Having worked with NIBE products before, we knew that the F1145 ground source heat pump would be an excellent option, effectively drawing energy up from the bottom of the marina. The constant sea temperature means that the 8kW system can work at maximum efficiency, harnessing enough energy to provide underfloor heating for the well-insulated building and hot water for the washrooms and laundry facilities.”
Using the sea as a constant, reliable heat source meant that there was no need for the Black Isle installers to drill any boreholes or trenches into the ground surrounding the shore building. Instead, the system operates using submerged collector pipes that draw energy directly from the marina basin back to the heat pump, which then heats water in a 750-litre thermal storage tank. This means that visiting boaters benefit from a consistent and readily available hot water supply, as well as comfortable space heating.
The NIBE F1145 ground source heat pump is specifically designed to operate using lake/sea, ground or rock as a heat source. The high-efficiency system operates to a COP of up to 5.03 at 0/35°C and boasts an integrated control system for bespoke programming and a multi-colour user display for straightforward and intuitive operation.
Phil Hurley, managing director at NIBE, says: “The new shore facilities at Inverness Marina perfectly showcase the extensive benefits ground source heat pumps have to offer buildings with a high heat demand. As well as making the most of the marina’s consistent temperature to provide a reliable heating and hot water solution for visitors, the F1145 system also offers substantial financial benefits for the building’s owners.
“Not only have they successfully found an alternative to inefficient and costly oil or LPG systems, they are also now eligible to apply for long-term tariff support under the commercial Renewable Heat Incentive (RHI). This means Inverness Marina is poised to reap the financial, as well as environmental, rewards of using renewable heat – now and well into the future.”
For more information on NIBE’s range of ground source heat pumps, or any other product in its market-leading portfolio of heating, cooling, ventilation and heat recovery solutions, please visit www.nibe.co.uk.