Robust design of flash evaporators for must concentration applications in wine production

Open Access

Table 2

Desirability function specifications.

Design objectives	Observation var.	Name	Unit	Desirability functions specifications
*DOI* = [DOI₁, …, DOI₄]^T	y = [y₁, …, y₈]^T			d = [d₁, …, d₈]^T

				AC	d(AC)	SL	d(SL)	Objective
1) Product quality	Product output temperature	T_po	(°C)	20	0.05	25	0.9	Target
				35	0.05	30	0.9	Target
	Alcoholic volume fraction	D_po	(%)	11	0.05	11.8	0.9	Target
				13	0.05	12.2	0.9	Target
	Pressure	P_VLP	(mbar)	97	0.01	94	0.9	Minimize
2) Transportability	Mass	m_sys	(t)	7.5	0.01	5.3	0.5	Minimize
2) Transportability	Floor area	A_sys	(m²)	16	0.01	10	0.5	Minimize
3) Environmental impact	Eco-Indicator	EI₉₉	(–)	50000	0.01	1000	0.99	Minimize
4) Cost	Investment Cost		(k€)	465	0.01	141	0.5	Minimize
4) Cost	Operating costs		(k€)	153	0.01	84	0.5	Minimize

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