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20
Air Volume Required for Cooling Process
冷却过程空气需要量经验计算 Practical calculation for finding air volume uses for cooling process
冷却过程需要的风量
为降低1000 KGs.颗粒料温度与水分: 进料温度 90 °C >> 出料温度 33 °C 进料水份 15% >> 出料水份 12% 采用30 °C 的环境空气 冷却器空气出口温度 45 °C
3. 颗粒料在空气中的流动时间 Time that pellets move within the air
16
PRODUCT IN MOIST AIR OUT
EVAPORATION THERMAL DIFFUSION LIQUID& VAPOR MOVEMENT
MOIST AIR IN PRODUCT OUT
Air Volume Required for Cooling Process
冷却过程空气需要量经验计算 Practical calculation for finding air volume uses for cooling process 将颗粒水分从15% 降低到 12%: 水分 15% 意味着颗粒 1000 KGs. 包括水 150 KGs. 和干料 850 KGs. 水分12%意味着颗粒 100 KGs. 由干料 88 KGs. 和水 12 KGs.组成. 故此, 如干料有850 KGs. 水则有 12 x 850 /88 = 116 KGs. 那么蒸发掉的水就是 150-116 = 34 KGs.
1. 颗粒状态 - 温度 - 水份 - 密度 - 大小和形状 - 油脂喷涂
Pellets Temperature
Moisture
Density
Size & Shape
Fat Coated
15
冷却过程影响因素 The factors effected to cooling process.
2. 环境空气 Ambient Air - 温度 Temperature - 相对湿度 Relative Humidity - 风量 Volume - 蒸气压力 Vapor Pressure - 空气中水份与蒸气浓度 Water content and vapor content in the air
ห้องสมุดไป่ตู้
冷却过程空气体积需要量
To decrease moisture from 15% to 12% Moisture 15% means the pellets 1000 KGs. Consist of water 150 KGs. and dry component 850 KGs. Moisture 12% means the pellets 100 KGs. Consist of dry component 88 KGs. and water 12 KGs. So,If there are dry component 850 KGs. water 12 x 850 /88 = 116 KGs. Then must be evaporated water 150-116 = 34 KGs.
by temperature and humidity balance with ambient air through the evaporation and thermal diffusion process, the ambient air is brought in contact with the outer surface of the pellets in the cooler within limited duration until the pellet Temperature is less than or equal the ambient temperature +5 oC and the pellets moisture must not be exceed 12%.
Air Inlet Temp
Product flow
10
颗粒料冷却特性
PELLET COOLING CHARACTERISTIC
逆流式（或立式）冷却器 / COUNTERFLOW COOLER Product flow
Pellet Begin Temp
Air Outlet Temp
Pellet End Temp Air Inlet Temp
19
- 油脂喷涂
- 风量 - 空气温度 - 颗粒停留时间
影响动物消化的因素
Animal digestion factors
3.4 因机械和化学作用造成的蒸气/液体流动
Vapor / liquid movement by mechanical and chemical force
-
颗粒水份 Pellet moisture 颗粒密度 Pellet density 颗粒大小与形状 Pellet size and shape 风量 Air volume 空气相对湿度 Relative humidity of air 空气蒸发压力 Air vapor pressure 空气中水份与蒸气浓度 Moisture and vapor air content 颗粒停留时间 Pellet dwell time
Air Flow
11
颗粒料冷却曲线图
PELLET COOLING PROFILE
T meaueCh n e e pr t r a g
65.0 60.0 55.0 50.0 45.0 40.0 35.0 30.0 25.0
meaue Te p r t r -C
Evaporation Stage
Thermal Diffusion
17
影响动物消化的因素 Animal digestion factors
1. 蒸发 - 颗粒温度 - 颗粒湿度 - 油脂喷涂 - 风量 - 蒸气压力 Evaporation Pellet temperature Pellet moisture Fat coating Air volume Vapor pressure
To decrease temperature and moisture of 1000 KGs.-pellets Pellets Inlet Temp. 90 °C >> Pellet Outlet Temp. 33 °C Pellets Inlet Moisture 15% >> Pellet Outlet Moisture 12% By using the ambient air at 30°C Outlet temperature from cooler 45 °C 21
(LIQUID DIFFUSION)
4
温度平衡
TEMPERATURE EQUILIBRIUM
- 重力造成的液体流动
LIQUID MOVEMENT DUE TO GRAVITY
- 水份差异造成的蒸汽流动（蒸汽扩散作用）
VAPOR MOVEMENT DUE TO MOISTURE CONCENTRATION DIFFERENCE
冷却过程 COOLING PROCESS
Sakchai Boamoon
Feedmill KnowledgeBase
1
冷却过程 COOLING PROCESS
定义 / Definition
冷却过程是在一定的时间内将产品 的温度和水分平衡到标准质量状态 的一种热交换过程。 The process balanced temperature and humidity of the product to standard quality within limited time
The process of decreasing temperature and moisture from pellets (which increase by mash conditioning with steam and pelleting process.)
环境空气进入冷却器，在一定的时间内与颗粒料外表面接触，直到 颗粒料温度不超过环境温度 +5 oC以上, 颗粒水份不超过 12%.
3. 机械或化学力造成的液体流动
Liquid movement by Mechanical & Chemical Force
4. 机械或化学力造成的蒸汽流动
Vapor movement by Mechanical & Chemical Force
6
颗粒料冷却 PELLET COOLING
它是通过蒸发和热扩散过程，使料的温度和环境空气相平衡， 从而降低颗粒料温度和水份（粉状料经过蒸汽调质与制粒过程而 增加的温度与水份部分）的一种过程。
Moisture Decrease by
Evaporation (vapor move out) Kinetic Force (liquid move out)
8
颗粒料冷却 PELLET COOLING
40 °C 12%M
Heat Diffusion
32 °C 11%M
Heat Balance Surface 14%M
3
温度平衡
TEMPERATURE EQUILIBRIUM
- 毛细管作用造成的液体流动
LIQUID MOVEMENT DUE TO CAPILLARITY
- 渗透力造成的液体流动
LIQUID MOVEMENT DUE TO OSMOTIC FORCE
- 水份差异造成的液体流动（液体扩散作用）
LIQUID MOVEMENT DUE TO MOISTURE CONCENTRATION DIFFERENCE
7
颗粒料冷却
Heat Water Warm Air Vapor
PELLET COOLING
Cool Air
Vapor
温度降低原因有： Temperature Decrease by • 蒸发(热用于将液体变成蒸汽） Evaporation (heat used for change liquid to vapor) • 热扩散(热传递出去) Heat Diffusion (heat transfer out) 水份降低原因有： • 蒸发 (蒸汽脱离) • 运动力 (液体脱离)
(VAPOR DIFFUSION)
- 温度差异造成的蒸汽流动（热扩散作用） VAPOR MOVEMENT DUE TO TEMPERATURE DIFFERENCE (THERMAL DIFFUSION)
5
冷却过程 Cooling Process
1. 蒸发 2. 热扩散
EVAPORATION THERMAL DIFFUSION
32 °C Ambient Temp.
32 °C Ambient Temp.
9
颗粒料冷却特性
PELLET COOLING CHARACTERISTIC
卧式冷却器 / CROSSFLOW COOLER
Air Flow Pellet Begin Temp
Air Outlet Temp
Pellet End Temp
2
温度平衡
TEMPERATURE EQUILIBRIUM
- 热通过蒸发过程而变成水蒸汽
HEAT USED FOR EVAPORATION PROCESS TO VAPOR
- 热通过热的传播过程传递到冷却介质上
HEAT TRANSFER TO COOLANT (MOIST AIR)
THROUGH THERMAL DIFFUSION PROCESS
0
4
8
Ambient Temperature 30 °C Relative Humidity 70 %
Tim e
12
16
20
12
颗粒料冷却曲线图
PELLET COOLING PROFILE
M istu C an e o re h g
15.0 14.5 14.0 13.5 13.0 12.5 12.0
18
影响动物消化的因素
Animal digestion factors
2. 热传递 Heat transfer
- 颗粒温度 - 颗粒密度 - 颗粒大小与形状
Pellet temperature Pellet density Pellet size and shape
Fat coating Air volume Air temperature Pellet dwell time
o tue %M is r
Evaporation Stage
Liquid & Vapor Movement
0
4
8 Tim e
12
16
20
13
Ambient Temperature 30 °C Relative Humidity 70 %
14
冷却过程影响因素 The factors effected to cooling process.
Air Volume Required for Cooling Process
冷却过程空气需要量经验计算 Practical calculation for finding air volume uses for cooling process
冷却过程需要的风量
为降低1000 KGs.颗粒料温度与水分: 进料温度 90 °C >> 出料温度 33 °C 进料水份 15% >> 出料水份 12% 采用30 °C 的环境空气 冷却器空气出口温度 45 °C
3. 颗粒料在空气中的流动时间 Time that pellets move within the air
16
PRODUCT IN MOIST AIR OUT
EVAPORATION THERMAL DIFFUSION LIQUID& VAPOR MOVEMENT
MOIST AIR IN PRODUCT OUT
Air Volume Required for Cooling Process
冷却过程空气需要量经验计算 Practical calculation for finding air volume uses for cooling process 将颗粒水分从15% 降低到 12%: 水分 15% 意味着颗粒 1000 KGs. 包括水 150 KGs. 和干料 850 KGs. 水分12%意味着颗粒 100 KGs. 由干料 88 KGs. 和水 12 KGs.组成. 故此, 如干料有850 KGs. 水则有 12 x 850 /88 = 116 KGs. 那么蒸发掉的水就是 150-116 = 34 KGs.
1. 颗粒状态 - 温度 - 水份 - 密度 - 大小和形状 - 油脂喷涂
Pellets Temperature
Moisture
Density
Size & Shape
Fat Coated
15
冷却过程影响因素 The factors effected to cooling process.
2. 环境空气 Ambient Air - 温度 Temperature - 相对湿度 Relative Humidity - 风量 Volume - 蒸气压力 Vapor Pressure - 空气中水份与蒸气浓度 Water content and vapor content in the air
ห้องสมุดไป่ตู้
冷却过程空气体积需要量
To decrease moisture from 15% to 12% Moisture 15% means the pellets 1000 KGs. Consist of water 150 KGs. and dry component 850 KGs. Moisture 12% means the pellets 100 KGs. Consist of dry component 88 KGs. and water 12 KGs. So,If there are dry component 850 KGs. water 12 x 850 /88 = 116 KGs. Then must be evaporated water 150-116 = 34 KGs.
by temperature and humidity balance with ambient air through the evaporation and thermal diffusion process, the ambient air is brought in contact with the outer surface of the pellets in the cooler within limited duration until the pellet Temperature is less than or equal the ambient temperature +5 oC and the pellets moisture must not be exceed 12%.
Air Inlet Temp
Product flow
10
颗粒料冷却特性
PELLET COOLING CHARACTERISTIC
逆流式（或立式）冷却器 / COUNTERFLOW COOLER Product flow
Pellet Begin Temp
Air Outlet Temp
Pellet End Temp Air Inlet Temp
19
- 油脂喷涂
- 风量 - 空气温度 - 颗粒停留时间
影响动物消化的因素
Animal digestion factors
3.4 因机械和化学作用造成的蒸气/液体流动
Vapor / liquid movement by mechanical and chemical force
-
颗粒水份 Pellet moisture 颗粒密度 Pellet density 颗粒大小与形状 Pellet size and shape 风量 Air volume 空气相对湿度 Relative humidity of air 空气蒸发压力 Air vapor pressure 空气中水份与蒸气浓度 Moisture and vapor air content 颗粒停留时间 Pellet dwell time
Air Flow
11
颗粒料冷却曲线图
PELLET COOLING PROFILE
T meaueCh n e e pr t r a g
65.0 60.0 55.0 50.0 45.0 40.0 35.0 30.0 25.0
meaue Te p r t r -C
Evaporation Stage
Thermal Diffusion
17
影响动物消化的因素 Animal digestion factors
1. 蒸发 - 颗粒温度 - 颗粒湿度 - 油脂喷涂 - 风量 - 蒸气压力 Evaporation Pellet temperature Pellet moisture Fat coating Air volume Vapor pressure
To decrease temperature and moisture of 1000 KGs.-pellets Pellets Inlet Temp. 90 °C >> Pellet Outlet Temp. 33 °C Pellets Inlet Moisture 15% >> Pellet Outlet Moisture 12% By using the ambient air at 30°C Outlet temperature from cooler 45 °C 21
(LIQUID DIFFUSION)
4
温度平衡
TEMPERATURE EQUILIBRIUM
- 重力造成的液体流动
LIQUID MOVEMENT DUE TO GRAVITY
- 水份差异造成的蒸汽流动（蒸汽扩散作用）
VAPOR MOVEMENT DUE TO MOISTURE CONCENTRATION DIFFERENCE
冷却过程 COOLING PROCESS
Sakchai Boamoon
Feedmill KnowledgeBase
1
冷却过程 COOLING PROCESS
定义 / Definition
冷却过程是在一定的时间内将产品 的温度和水分平衡到标准质量状态 的一种热交换过程。 The process balanced temperature and humidity of the product to standard quality within limited time
The process of decreasing temperature and moisture from pellets (which increase by mash conditioning with steam and pelleting process.)
环境空气进入冷却器，在一定的时间内与颗粒料外表面接触，直到 颗粒料温度不超过环境温度 +5 oC以上, 颗粒水份不超过 12%.
3. 机械或化学力造成的液体流动
Liquid movement by Mechanical & Chemical Force
4. 机械或化学力造成的蒸汽流动
Vapor movement by Mechanical & Chemical Force
6
颗粒料冷却 PELLET COOLING
它是通过蒸发和热扩散过程，使料的温度和环境空气相平衡， 从而降低颗粒料温度和水份（粉状料经过蒸汽调质与制粒过程而 增加的温度与水份部分）的一种过程。
Moisture Decrease by
Evaporation (vapor move out) Kinetic Force (liquid move out)
8
颗粒料冷却 PELLET COOLING
40 °C 12%M
Heat Diffusion
32 °C 11%M
Heat Balance Surface 14%M
3
温度平衡
TEMPERATURE EQUILIBRIUM
- 毛细管作用造成的液体流动
LIQUID MOVEMENT DUE TO CAPILLARITY
- 渗透力造成的液体流动
LIQUID MOVEMENT DUE TO OSMOTIC FORCE
- 水份差异造成的液体流动（液体扩散作用）
LIQUID MOVEMENT DUE TO MOISTURE CONCENTRATION DIFFERENCE
7
颗粒料冷却
Heat Water Warm Air Vapor
PELLET COOLING
Cool Air
Vapor
温度降低原因有： Temperature Decrease by • 蒸发(热用于将液体变成蒸汽） Evaporation (heat used for change liquid to vapor) • 热扩散(热传递出去) Heat Diffusion (heat transfer out) 水份降低原因有： • 蒸发 (蒸汽脱离) • 运动力 (液体脱离)
(VAPOR DIFFUSION)
- 温度差异造成的蒸汽流动（热扩散作用） VAPOR MOVEMENT DUE TO TEMPERATURE DIFFERENCE (THERMAL DIFFUSION)
5
冷却过程 Cooling Process
1. 蒸发 2. 热扩散
EVAPORATION THERMAL DIFFUSION
32 °C Ambient Temp.
32 °C Ambient Temp.
9
颗粒料冷却特性
PELLET COOLING CHARACTERISTIC
卧式冷却器 / CROSSFLOW COOLER
Air Flow Pellet Begin Temp
Air Outlet Temp
Pellet End Temp
2
温度平衡
TEMPERATURE EQUILIBRIUM
- 热通过蒸发过程而变成水蒸汽
HEAT USED FOR EVAPORATION PROCESS TO VAPOR
- 热通过热的传播过程传递到冷却介质上
HEAT TRANSFER TO COOLANT (MOIST AIR)
THROUGH THERMAL DIFFUSION PROCESS
0
4
8
Ambient Temperature 30 °C Relative Humidity 70 %
Tim e
12
16
20
12
颗粒料冷却曲线图
PELLET COOLING PROFILE
M istu C an e o re h g
15.0 14.5 14.0 13.5 13.0 12.5 12.0
18
影响动物消化的因素
Animal digestion factors
2. 热传递 Heat transfer
- 颗粒温度 - 颗粒密度 - 颗粒大小与形状
Pellet temperature Pellet density Pellet size and shape
Fat coating Air volume Air temperature Pellet dwell time
o tue %M is r
Evaporation Stage
Liquid & Vapor Movement
0
4
8 Tim e
12
16
20
13
Ambient Temperature 30 °C Relative Humidity 70 %
14
冷却过程影响因素 The factors effected to cooling process.