Numerical Investigation of Waste-Heat Driven Adsorption Desalination Cycle

Adsorption cycle is a practical and inexpensive method of desalinating the saline
and brackish water to produce potable water for both industrial and residential
applications. In recent years, many researcher has developed and experimented
on the use of cost effective and environmental friendly adsorption cycle for
desalination that require only low temperature waste heat to operate. Such waste
heat is available in abundance from the exhaust of industrial processes, micro
turbines of co-generation plants and renewable sources. Being waste heat driven,
useful effects are generated by the adsorption desalination (AD) cycle with no
additional burning of fuel and thus, mitigating the effects of global warming.
Fundamental studies of adsorption, adsorption isotherm, kinetics and adsorbent
used in the process of adsorption desalination were very importance to evaluate
the cycle. With the implementation of adsorption-desorption phenomena, the
cycle simultaneously produces high-grade potable water from a single heat input.
In this proposal, it proposed the adsorption desalination (AD) system of two-bed
operation mode that employs a low-temperature waste energy for numerically
studies. The cycle will be calculated based on the utilization of waste heat
sources in terms of mathematical modeling of a two-bed adsorption cycle based
on adsorption isotherm, kinetics, mass and energy balances between the sorption
elements, the evaporator and condenser. Then, the cycle will be monitored using
key performance parameter namely (i) specific daily water production (SWDP),
(ii) cycle time, and (iii) performance ratio (PR) for various heat sources
temperature, mass flow rates, cycles times along with a fixed heat sink
temperature. The numerical results of the adsorption cycle are validated using
experimental data from the past researched