Advances in Desiccant Dehumidification

Abstract

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Enhanced moisture sorption through regulated MIL-101(Cr) synthesis and its integration onto heat exchangers

“…1 This need has become more pressing because of the ongoing global energy crisis. 6 Unfortunately, the mainstay vapour compression refrigeration systems (VCRS) for cooling applications 2,7,8 have limited energy efficiencies with coefficients of performance (COPs) between 2.8-3.8. 4,9,10 Hence, there is an impetus for developing more sustainable cooling systems.…”

“…Solid desiccantcoated devices can remove the latent heat load before the VCRS (or alternative cooling system) focuses on handling the sensible heat load, thus raising the cooling efficiency. 7,12 There are at least three categories of solid desiccant-coated devices: stationary beds, desiccant wheels and desiccant-coated heat exchangers (DCHEs). 7,10,12 Notably, DCHEs have several advantages over the other two types of solid desiccant-coated devices.…”

“…7,12 There are at least three categories of solid desiccant-coated devices: stationary beds, desiccant wheels and desiccant-coated heat exchangers (DCHEs). 7,10,12 Notably, DCHEs have several advantages over the other two types of solid desiccant-coated devices. 7,10,13 The DCHEs are typically air-to-liquid cross-cooled devices whereby cool water removes the adsorptive heat when the desiccant dehumidies the airstream.…”

“…7,10,12 Notably, DCHEs have several advantages over the other two types of solid desiccant-coated devices. 7,10,13 The DCHEs are typically air-to-liquid cross-cooled devices whereby cool water removes the adsorptive heat when the desiccant dehumidies the airstream. 2,7,10 Since water conducts heat more effectively than air, dehumidication using DCHEs can be almost isothermal with high moisture removal capacities (MRCs).…”

“…7,10,13 The DCHEs are typically air-to-liquid cross-cooled devices whereby cool water removes the adsorptive heat when the desiccant dehumidies the airstream. 2,7,10 Since water conducts heat more effectively than air, dehumidication using DCHEs can be almost isothermal with high moisture removal capacities (MRCs). 2,7,14,15 For instance, using DCHEs cause a change in humidity ratio between the inlet and outlet air that can be 2.5 g kg −1 higher than those for stationary beds or desiccant wheels.…”