Hesam Bahrehmand and Majid Bahrami n nm Simon Fraser...

Optimal design of sorber beds for sorption systems Hesam Bahrehmand1 and Majid Bahrami2

Laboratory for Alternative Energy Conversion (LAEC), Mechatronic Systems Engineering,

Simon Fraser University www.sfu.ca/~mbahrami

1 Hesam Bahrehmand, sbahrehm@sfu.ca 2 Majid Bahrami, mbahrami@sfu.ca

Material

properties

Thermogravimetric sorption analyzer

Transient plane source

Sorber bed

geometry

Operating

conditions

Graphite flake additive

to increase sorbent

thermal diffusivity

Silica gel/CaCl2+PVA

2 2

22, ,2 2

( )i i ii i ig Fo

Fo

1 1

)()()(),,(n

nmm

nmn FoXFo

• Run-time=1.5 min on a 3.4 GHz PC

• Temperature and water uptake distribution

Sorption

system

performance

Optimized sorber bed heat

exchanger (OSHEX)

Off-the-shelf heat exchanger Gravimetric large

pressure jump

Analytical model

Model validation

Effect of graphite flake additive

Optimization of SCP & COP