Urban Rigger


Hydro Source Heating

An efficient, economical, and above all, environmental responsible and sustainable solution.

Because the URBAN RIGGER is a floating dwelling it seemed natural to utilize the surrounding water as a free and clean heating source, utilizing the latest technology from our global partners: “Hydro Source Heating”.

Using the seawater as a natural source of heat is not only clever, but has a number of exciting advantages:
– The heat transfer rate from water is higher than using the ground as a heat source.
– The water is in close contact with the entire pipe at all times, enhancing its efficiency.
– The flow/circulation of water provides constant energy replacement.
– The return temperature to the heat pump is generally 5-6°C higher than on ground collectors, increasing the efficiency of the Danfoss heat pump in the URBAN RIGGER.

A cold water anti-freeze mix is pumped through a series of energy absorbing non-corrosive hydro pex pipes in the base slab of the hull on the URBAN RIGGER. As heat naturally flows from warmer to cooler places, the anti-freeze mix circulating the array is constantly warmed by the sea’s low-grade heat.

During the summer months the harbor water fluctuates around 18-21°C, and the URBAN RIGGER facility sends heated water through 800 meters of hydro pex pipes to the apartments, where the off-grid-connected 5 kWh-capacity Danfoss heat pump boost temperatures to between 40-55 degrees Celsius, for heating and warm water, through the system for floor heating and utility water.

During the winter months, when seawater temperatures dip as low as 2°C, the heat exchanger boosts water temperatures up to 70°C, witch is the perfect water temperature level that each apartment requires for comfort and enjoyable living during winter.

The Danfoss 5 KW heat pump, combined with a 7,5 Kwh Hanwha Q-Cells PV panel solution on the roof of the URBAN RIGGER, charging the dual 3,5 KW Lit-Ion battery banks, creates the sustainable and cost-effective heating source needed by generating a whopping 17,5 kilowatt-hours (kWh) of heat from just 1kWh of electricity, reducing the coefficient of performance for the heat pump, whilst reducing emission by 81%, compared to conventional heating using natural gas, grid or oil as a power source.

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