Container for phase-change material

A plurality of containers for a phase change material, comprising:

• a first container comprising:
• a closed shell comprising a filling opening, a top side, a bottom side, a first lateral side and a second lateral side, wherein the closed shell of the first container is configured to hold a phase change material nested inside said closed shell of the first container, and wherein the first container comprises a first group of one or several conduit recesses designed to receive a conduit for refrigerant fluid, the one or several conduit recesses extending from the first lateral side to the second lateral side;
• and
• a second container comprising:
• a closed shell comprising a filling opening, a top side, a bottom side, a first lateral side and a second lateral side, wherein the closed shell of the second container is configured to hold a phase change material nested inside said closed shell of the second container, and wherein the second container comprises a first group of one or several conduit recesses designed to receive a conduit for refrigerant fluid, the one or several conduit recesses of the second container extending from the first lateral side to the second lateral side of the second container;
• and
• wherein when the first container is positioned horizontally to the second container, the one or several conduit recesses of the first container mate with the one or several conduit recesses of the second container such that a single conduit is seated in both a conduit recess of the first container and an adjacent mated conduit recess of the second container;
• and
• wherein each of the one or several conduit recesses of both the first container and the second container have a concave curved surface to receive the conduit for refrigerant fluid.