Heat requirement in an indoor recirculating aquaculture system

Due to the benefits of the recirculating aquaculture system (RAS), many fish farmers are choosing this system. Some farmers chose indoor RAS, where fish tanks are kept inside buildings or greenhouses. Heating the buildings and the makeup water requires a substantial amount of energy since optimum growth temperatures exceed the normal temperature of supply water. In this paper three different heating systems are analyzed: ground source heat pump, natural gas boiler and wood pellet boiler. The annual running cost of the water heating system in both cases (with heat recovery and no heat recovery) is the lowest for the ground source heat pump, followed by the wood pellet boiler and the natural gas boiler.(c) 2022 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).Peer-review under responsibility of the scientific committee of the The 8th International Conference on Energy and Environment Research, ICEER, 2021.

Automated summary

Due to the benefits of RAS, many fish farmers are choosing this system. This paper analyzes three different heating systems for indoor RAS and finds that the ground source heat pump has the lowest running cost for water heating.