drying plate heat exchanger waste heat recovery Baltic Sea Region Biot number Ca-type bentonite Cristianismo y ateísmo DH network GEO heating Navier–Stokes simulation R744 Research & information: general Technology: general issues Thermosyphon absorption cooling air flow air-cooled steam turbine generator ammonia-lithium nitrate analytical and experimental solutions ancillary services artificial ground freezing axial permanent magnet coupling (APMC) backflow batch transportation bentonite buffer material body-fitted coordinate-based proper orthogonal decomposition reduced-order model (BFC-POD-ROM) bubble absorber chip integration combustor computational fluid dynamics