The heat pumps are used to heat the indoor swimming pool of two male, one-horned Indian rhinoceroses in the Scottish zoo. The zoo has been looking for ways to reduce the energy needed to heat the swimming pools without impacting the wellbeing of the animals, known as Samir and Bertus.
The heat pumps deliver renewable heat to the 4m x 4m x 0.5m indoor pool for the rhinos all year round no matter what the outside temperature.
Lothian Gas, from Edinburgh, installed the heat pumps after calculating a 30 kW heat load for the pool, necessitating a 40kW capacity system. The heat pumps ‘tube and tube’ heat exchanger designed to work with and maintain the lower temperatures that enable the heat pumps to be very efficient.
Furthermore, there is a Grundfos pump between the heat pumps and the heat exchanger which circulates water around the system to make sure the response time of the heat pumps is quick.
Commissioned in November 2014, the heat pumps are now successfully provided a heated pool for Samir and Bertus and, judging by their behaviour, they are enjoying their environment. The rhinos can been various forms of 'rhino enrichment', such as large balls, tractor tyres and logs.
Their pool is now kept between 28 and 30 degrees celsius by the heat pumps which enables them to swim and wade throughout the year.