TY  - Type of reference 
TI  - Entropy analysis in spray cooling for dosing water injection 
AU  - Stephanie O.L. Lacour 
AU  - Kouadio Alphonse Diango 
AU  - Michel Feidt 
AB  - Spraying water in air improves air-cooling capacity, which then relies on the evaporation of water. Even for small drop sizes, literature reports that the evaporation remains limited inside the spray and below saturation limits. In this article, we describe the evolution of thermodynamic quantities in a mixture of air and evaporating liquid water. A complete and coherent formulation is used to express enthalpy, entropy and chemical potential. At constant enthalpy, we show that the chemical equilibrium corresponds to an intermediate state in which droplet evaporation is not complete and entropy is maximum under certain conditions. Results are compared with some experimental values measured in a wind tunnel downstream of a spray. The calculated values are consistent with observations. Cooling efficiency is discussed for the various parameters, which are the amount of water, air temperature and ambient humidity. Then, the numerical approach is inverted in order to forecast the amount of water needed to reach a target cooling temperature. This numerical approach is used to set water flow depending on inlet flow conditions and cooling objectives. 
DO  - 10.21494/ISTE.OP.2022.0829 
JF  - Entropy: Thermodynamics – Energy – Environment – Economy  
KW  - Evaporative cooling,  maximum of entropy,  mixing vapours,  irreversibility of process,  dosing water, Refroidissement évaporatif,  maximisation d’entropie,  réversibilité des processus,  dosage de l’eau,  
L1  - https://openscience.fr/IMG/pdf/iste_entropie22v3n1_1.pdf 
LA  - en 
PB  - ISTE OpenScience 
DA  - 2022/03/21 
SN  - 2634-1476 
TT  - Analyse entropique du dosage de l’eau dans le refroidissement évaporatif 
UR  - https://openscience.fr/Entropy-analysis-in-spray-cooling-for-dosing-water-injection 
IS  - Issue 1 
VL  - 3 
ER  -