Editing Heat recovery ventilation (section)

=== Fixed plate heat exchangers ===
[[File:Płytowy GPWC wewnątrz obrysu fundamentowego.JPG|thumb|277x277px|Plate ground heat exchanger inside the foundation walls]]Mardiana et al.<ref>{{Cite book|title=Mardiana A, Riffat SB, Worall M. Integrated heat recovery system with windcatcher for building applications: towards energy-efficient technologies. In: Mendez-Vilas A, editor. Materials and processes for energy: communicating current research and technological developments. Badajoz: Formatex Research Center; 2013.}}</ref> integrated a fixed plate heat exchanger into a commercial wind tower, highlighting the advantages of this type of system as a means of zero energy ventilation which can be simply modified. Full scale laboratory testing was undertaken in order to determine the effects and efficiency of the combined system. A wind tower was integrated with a fixed plate heat exchanger and was mounted centrally in a sealed test room.

The results from this study indicate that the combination of a wind tower passive ventilation system and a fixed plate heat recovery device could provide an effective combined technology to recover waste heat from exhaust air and cool incoming warm air with zero energy demand. Though no quantitative data for the ventilation rates within the test room was provided, it can be assumed that due to the high-pressure loss across the heat exchanger that these were significantly reduced from the standard operation of a wind tower. Further investigation of this combined technology is essential in understanding the air flow characteristics of the system.<ref name=":2" />