The present invention relates to a thermal regulation device (100) for an agricultural structure (1), said thermal regulation device (100) comprising at least one circulation circuit (110) of a heat transfer fluid between at least one storage device ( 120) of heat and at least one heat exchanger (130) crossed by an air flow (300) directed towards the interior of the agricultural structure (1) and generated by a fan (131), the at least one heat exchanger (130) comprising: ° a bundle of tubes (132) inside which circulates the heat transfer fluid and between which passes the air flow (300), ° a cone (134) for guiding the flow of air disposed upstream or downstream of a bundle of tubes (132), the cone (134) comprising in particular a small mouth at which the fan (131) is placed and a large mouth at which the bundle of tubes is arranged (132).
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