PROBLEM TO BE SOLVED: To allow a different number of heat exchangers even of the same type to be provided so that the range of settings for heat exchange capacity is widened to improve versatility and make manufacture, storage, management and the like easy.SOLUTION: A floor portion F of a tank S in which a medium M composed of liquid and/or solid is placed is configured such that the whole or a part of the floor portion F to which heat exchangers H are attached are tank floor members 20 formed into a rectangular plate and forming a plurality of consecutive row-like portions 21 along one direction, and formed of one surface 22, another surface 23, a pair of outer ends 24, and a pair of joint-side ends 25. One or more storage grooves 26 capable of storing and holding the heat exchangers H along one direction are formed on the one surface 22 side and the other surface 23 side, so that the number of the storage grooves 26 on the one side 22 side and the number of storage grooves 26 on the other side 23 side are different from each other.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】 一種類でも数の異なる熱交換体を設けることができるようにし、熱交換の能力の設定幅を広げて汎用性の向上を図るとともに、製造,保管,管理等も容易にする。【解決手段】 液体及び/または固体からなる媒体Mが入れられる槽Sの床部Fであって、熱交換体Hが付設される床部Fの全部若しくは一部を構成するとともに、矩形板状に形成され一方向に沿って複数連設されて列状部21を形成する槽用床部材20において、一方面22,他方面23,一対の外側端24,一対の接合側端25を有して形成し、一方面22側及び他方面23側に、一方向に沿い熱交換体Hを収納して保持可能な1若しくは2以上の収納溝26を形成し、一方面22側の収納溝26の数と他方面22側の収納溝26の数とを異ならせた。【選択図】 図1
