Comparison of Energy Consumption in Different Evaporators

EVAPORATOR	5-effect TVR	7-effect TVR	1-effect MVR/ 2-effect TVR
PRODUCT	Skim milk	Skim milk	Skim milk
Capacity, kg/h	15,000	15,000	15,000
Solids in/out, %	9/50	9/50	9/50
Evaporation, kg/h	12,300	12,300	12,300
Pasteurization temp., șC	90	90	90
Holding time, sec.	30	30	30
Steam consumption, kg/h	1,610	1,190	375
Steam pressure, bar	10	10	10
Condensate, kg/h	13,400	13,400	12,800
Condensate temp., șC	54	51	22
Power consumption
- MVR, kW	-	-	150
- Motors, kW	75	75	50
Cooling water cons., m3/h	32	3.5	2*)
Cooling water temp.,in/out, șC	28/35	28/35	12/50
Power cons. cool. tower, kW	10	2.5	-
Residence time, min.	12	18	6

   
*) to be used only if the temperature of the raw milk is above 5șC.

2x3 high pressure fans for 2 MVR evaporators