Dry calculation

2020-09-02 17:07

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Name	Parameter	Value	Unit	Remarks
Dry calculation book
1. Known material conditions
Material name				Need to fill in
Material specific heat	c1=	0.24	kcal/kg℃	Need to fill in
Specific heat of air	c0=	0.24	kcal/kg℃	Need to fill in
Specific heat of flue gas	c0=	0.28	kcal/kg℃	Need to fill in
Sensible heat of steam	cs=	595	kcal/kg	Need to fill in
Initial moisture	w1=	55%		Need to fill in
Final moisture	w2=	15.0%		Need to fill in
Total amount of raw materials required	G1=	755.56	kg/h	Need to fill in
Yield	G2=	400.0	kg/h	Need to fill in
Evaporation	M=	355.6	kg/h
355.6	kg/h	355.6	kg/h	Selection of evaporation calculation formula
Raw material proportion	ρ=	0.40	kg/L	Need to fill in
Heap proportion	ρ=	0.40	kg/L	Need to fill in

2. Other conditions
Standard atmospheric conditions	Ps=	1.013	Mpa	Need to fill in
Ambient atmospheric conditions	Pso=	1.013	Mpa	Need to fill in
Air pressure ratio coefficient		1.000
Heat dissipation coefficient	f1=	0.15		Need to fill in
Air leakage coefficient	f2=	0.1		Need to fill in
Inlet air temperature	t1=	150	℃	Need to fill in
Outlet temperature	t2=	80	℃	Need to fill in
Ambient temperature	t0=	15	℃	Need to fill in
Raw material temperature	θ1=	50	℃	Need to fill in
Discharge temperature	θ2=	70	℃	Need to fill in


3. Heat and air balance
Heat consumption of evaporating water	Q1=	219306.7	kcal/h
Material heating up and heat consumption	Q2=	1920.0	kcal/h
System cooling	Q3=	33184.0	kcal/h
System effective heat	ΣQ'=	254410.7	kcal/h
System theoretical dry air consumption	L1=	15143.5	kg/h	System theoretical dry air consumption
Exhaust loss	Q4=	259862.3	kcal/h
Exhaust gas loss total heat required for drying	ΣQ=	514273.0	kcal/h
The actual dry air consumption of the system	L2=	15872.6	kg/h	System dry air consumption
Ambient temperature dry air volume flow	V0=	13175.9	m3/h
Inlet air temperature dry air volume flow	V1=	19018.8	m3/h
Average temperature in the dryer	t均=	115	℃
Average temperature dry air volume flow	V3=	17445.7	m3/h
Volume flow at exhaust temperature	V2=	16228.2	m3/h	Volume flow at exhaust temperature

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