Abstract: A heat transfer circuit includes a compressor, a heat exchanger, an expander, a plurality of valves, and a working fluid. The heat exchanger including a plurality of coils and is configured to exchange heat between the working fluid and a process fluid. The working fluid flows through the first heat exchanger in a first direction by flowing through the plurality of coils in series and in a second direction by flowing through the plurality of coils in parallel. A method of operating a heat transfer circuit includes operating in a first mode and operating in a second mode. In the first mode, working fluid flows though coils of a heat exchanger in series. In a second mode, the working fluid flows through the coils of the heat exchanger in parallel.

Abstract: A refrigerated case shelf has a main panel comprising a top wall and left and right sidewalls, respectively depending from left and right edges of the top wall and cooperating with the top wall to define left and right channels. At least one transverse brace is secured to the main panel. A left bracket has an insertion portion within the left channel and a right bracket has an insertion portion within the left channel.

Abstract: A refrigerated case shelf (38) has a main panel (120) comprising a top wall (140) and left (142) and right (144) sidewalk, respectively depending from left and right edges of the top wall and cooperating with the top wall to define left (164) and right (166) channels. At least one transverse brace (126; 128) is secured to the main panel (120). A left bracket (122) has an insertion portion (168) within the left channel (164) and a right bracket (124) has an insertion portion (170) within the left channel (166).

Abstract: A refrigerated case top duct member (122). The top duct member is the unitarily molded combination of a main panel (132) and a number of turning vanes (150, 152) at a forward end of the main panel. The member may be formed by vacuum molding.

Abstract: A refrigerated case (20) has a base (30) and a number of supports (91, 92, 93) extending upward from the base. A number of structural uprights (70, 72, 74) are coupled to the supports. The rear supports are positioned to permit a back-to-back positioning of pair of such refrigerated cases. When so-positioned, the left end (26) of each case is substantially aligned with the right end (28) of the other case and the rear supports of each case are in a nested relationship with the rear supports of the other case.

Abstract: A refrigerated case has a base and a number of supports extending upward from the base. A number of structural uprights are coupled to the supports. At least one insulated panel is positioned between the uprights and the supports and is secured to the uprights and the supports. A refrigeration apparatus is positioned to cool an interior of the case. At least the first of the panels has front and rear liner sheets. A transversely extending polymeric layer is at least partially between the liner sheets. An insulative foam layer is between the front and rear liner sheets. A number of fasteners secure at least some of the supports to the polymeric member and at least some of the uprights to the polymeric member.