Abstract: The invention is directed to a process to manufacture an interconnected stack of thermoplastic frames having two sides by stacking the thermoplastic frames to obtain a stack of frames such that the facing sides of two neighbouring frames are in contact with each other at a contact area. When stacking a longitudinal conduit is formed which runs along the length of the stack and a branched conduit is formed at the contact area. The interconnected stack of thermoplastic frames are obtained by supplying a pressurised melt of a plastic material to the elongated conduit and branched conduits.

Abstract: The invention is directed to an evaporator plate heat exchanger comprising a water supply (1) and a water discharge (2) and a stack (4) of injected moulded frames (5) and heat exchange sheets (6), wherein the stack has two ends (7, 8) and at least four sides (9, 10, 11,12). The stack (4) has alternating first (13) and second (14) spaces between the heat exchange sheets (6). The stack (4) comprises a first enclosed space (15) at one side of the stack (4) which is fluidly connected to the first spaces (13) and not fluidly connected to the second spaces (14). The first enclosed space (15) is fluidly connected to the water supply (1).

Abstract: The invention is directed to a modular gas flow system comprising at least a first and a second hollow cuboid shaped gas flow element. The four edges of at least one open face of the first gas flow element is connected in a gas tight manner to four edges of an open face of the second hollow cuboid shaped gas flow element. A valve or a partition is present at the connecting open faces. The gas flow system may be a header of a plate heat exchanger.

Abstract: The invention is directed to a building comprising more than one separate spaces and an air treatment system. The air treatment system comprises a central air drying unit fluidly connected to two or more local evaporative cooling units, wherein at least two local evaporative cooling units are each fluidly connected to a separate space of the building. The invention is also directed to a method to cool the air in two or more separate spaces by (a) drying ambient air in a central air drying unit to obtain a volume of dried air, (b) drawing in a part of the volume of dried air as obtained in step (a) to each separate space by means of an air displacement means and (c) using the dried air in a process of indirect evaporative cooling to obtain cooled air which is discharged into the interior of the separate space.

Abstract: The invention is directed to a building comprising more than one separate spaces and an air treatment system. The air treatment system comprises a central air drying unit fluidly connected to two or more local evaporative cooling units, wherein at least two local evaporative cooling units are each fluidly connected to a separate space of the building. The invention is also directed to a method to cool the air in two or more separate spaces by (a) drying ambient air in a central air drying unit to obtain a volume of dried air, (b) drawing in a part of the volume of dried air as obtained in step (a) to each separate space by means of an air displacement means and (c) using the dried air in a process of indirect evaporative cooling to obtain cooled air which is discharged into the interior of the separate space.

Abstract: The invention relates to a system for drying and/or cooling an airflow, comprising: at least one cooling device for cooling an airflow, comprising:—at least one cooling channel with an inflow opening for the airflow for cooling and an outflow opening for the cooled airflow,—at least one evaporating channel separated from the cooling channel by a transfer wall and having an inflow opening which is connected for medium throughflow to the outflow opening of the cooling channel, and an outflow opening, and—means for wetting the side of the transfer wall directed toward the evaporating channel, and a drying device for drying the airflow, comprising:—a drying channel with an inflow opening for the airflow for drying and an outflow opening for the dried air-flow, wherein the outflow opening of the cooling channel of the or a cooling device and/or the outflow opening of the evaporating channel of the or a cooling device is connected for medium throughflow to the inflow opening of the drying device.