BOPI 01 BR/2024 REPERTOIRE NUMERIQUE 19 (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS SARL, The House of Gideon, Golf/Bastos Quarter, Opposite The American Embassy, Entrance-St. John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) A concrete slab (20) comprises conventional concrete and a combined reinforcement of both post-tension steel strands (22, 26) and fibres (29). The post-tension steel strands (22, 26) : - have a diameter ranging from 5 mm to 20 mm, - have a tensile strength higher than 1700 MPa. The fibres (29) are present in a dosage ranging from 10 kg/m3 to 40 kg/m3 in case of steel fibres are in a dosage ranging from 1,5 kg/m3 to 9 kg/m3 in case of macro-synthetic fibres. ________________________________________ (11) 21343 Consulter le mémoire (51) F26B 21/08 (2018.01); F26B 23/00 (2018.01); F26B 3/04 (2018.01) ; F26B 9/06 (2018.01) (21) 1202200384 - PCT/EP2021/056988 (22) 18/03/2021 (30) SE n° 2050305-8 du 20/03/2020 (54) Method and system for supplying drying air. (72) SAMUELSSON, Kent (SE) et STEIER, Vilhelm (SE) (73) SAMSTER AB, E A Rosengrens gata 7, 421 31 VÄSTRA FRÖLUNDA (SE) (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS SARL, The House of Gideon, Golf/Bastos Quarter, Opposite The American Embassy, Entrance-St. John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) A method of and a system for drying a material in a drying chamber (100), the method comprising the steps of; - supplying air to an air-drying system (114, 214, 314) which air-drying system comprises; an air inlet (116), a first heat exchanger (204) having a first warm side (204a) and a first cold side (204b); a heat pump (318) comprising an evaporator (206), a condenser (208) and a compressor (316) arranged to provide a first heat transfer from the evaporator (206) to the condenser (208); an air outlet (118) arranged to supply the air to the drying chamber (100); a second heat exchanger (210) having a second warm side (210a) and a second cold side (210b), the second cold side (210b) being connected a heat transfer medium capable of absorbing heat from the second warm side (210a) through a second heat transfer, the second heat exchanger (210) being arranged downstream of the first cold (204b) side and upstream of the air outlet (118); and an air flow device (202) arranged to control the air flow rate from the air inlet (116) to the air outlet (118) for supplying air into a drying chamber (100); - passing the air, by means of the air flow device (202) , from the air inlet (116), sequentially through the first warm side (204a) of the first heat exchanger (204), the evaporator (206), the first cold side (204b) of the first heat exchanger (204), the condenser (208) and the air outlet (118) and further passing the air through the second warm side (210a) of the second heat exchanger (210); and - alternately heating and cooling the air passing the air-drying system (114, 214, 314), wherein heating the air comprises promoting the first heat transfer while suppressing the second heat transfer, and cooling the air comprises suppressing the first heat transfer while promoting the second air transfer.
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