Since Thailand is a country in the tropics, the air temperature is quite high. Most of the herders tend to build greenhouses as open houses. This is to allow the air in the house to be circulated and ventilated to reduce the heat inside the house as well. The open house is not able to control the temperature, the temperature of the house will vary according to the weather conditions outside the house. During the summer, the weather is very hot.
Some pets, such as broilers, may not be able to stand the heat. In order to avoid hot weather and to control the temperature of the house, a closed system house was invented by using the principle of water cooling and using a fan as an air vent. with a honeycomb (cooling pad) that allows water to flow through until wet When running the fan,
which is opposite the honeycomb panel, the outside air is sucked through the honeycomb panel into the house. The house will be cool by using the principle of evaporation of water. In addition, closed system houses can also be very effective in preventing diseases, especially avian influenza.
Smart Duration Control
Both open and closed systems have different advantages and disadvantages. The herdsman has to decide which system to use in the house, but in general, a closed system will help solve the problem of hot weather. and prevent disease better than open greenhouses The advantages and considerations of a closed system house are as follows:
strength
1. Reduce the stress caused by heat and make the chicken healthier.
2. In the father – broiler breeder will produce higher yields.
3. Reduce the mortality rate especially during hot weather
4. Use less fans compared to open schools. and is economical electric charge
5. Can be used in conjunction with an opaque system (dark-out) to raise broiler chickens more efficiently than an open house.
6. The air circulation inside the house is very consistent. Fresh air from outside will pass through the honeycomb panels into the house and exhaust air will be exhausted outside the house with a fan only for a short time. This can reduce the ammonia level problem in the house.
7. Better growth rate and good feed conversion efficiency in broiler chickens.
8. Reduce the use of antibiotics.
9. Able to raise more chickens than an open house compared to the same area
10. Able to control temperature, humidity, ventilation and lighting in the house
Considerations
1. High initial investment (depending on the efficiency of taking care of each farm)
2.Because the temperature control system of the house depends on many factors such as the type and size of the cooling plate. humidity levels outside and inside the house area and density of raising Number of fans and fan positioning To achieve air circulation at the appropriate wind speed and throughout the house must study knowledge and understanding of the system, practice and proper management methods
3. Animal husbandry that exceeds the scope of their ability to manage their rearing. The condition of the house and the number of equipment can cause health problems and yields that are below the standard
4. The size of the house in a farm enclosed system must take into account the farm’s all-in all-out handling capability. be exhausted within a period of time and make it necessary to bring animals Later generations gradually entered the house. While the previous set of animals are still being raised in greenhouses, it will certainly affect the health of the new generation of animals.
5. The house in a closed system is designed to help increase animal productivity. As for the prevention of disease or infection of animals, emphasis should be placed on the protection of farms in closed systems.
เอกสารอ้างอิง
[1] P. V. Nielsen, A. Restivo, and J. H. Whitelaw,
Transactions of ASME J. of Fluids Eng. 100,
(1978)
[2] S. Murakami, S. Kato, and Y. Suyama, ASHRAE
Transactions 93, (1987)
[3] V. Blanes-Vidal, E. Guijarro, A.G. Torres,
Application of computation fluid dynamics to the prediction of airflow in a mechanically ventilated
commercial poultry building,
Biosystems
Engineering. 100 (2008) 105-116.
[4] W. Chayanon, S. Ratchaphon, W. Sorayut, Development of a Suitable Air Condition Control System for a Closed-System Henhouse, Journal
of Materials Science and Engineering, B 1 (2011) 667-676.
[5] Aviagen Group. (2009) Broiler Management
Manual.
[6] Department of Livestock Development. The
Standards for Closed-System Henhouse of animal farms in Thailand (1999)
Evaporative cooling system)
Evaporative cooling system
Since Thailand is a country in the tropics, the air temperature is quite high. Most of the herders tend to build greenhouses as open houses.
This is to allow the air in the house to be circulated and ventilated to reduce the heat inside the house as well. The open house is not able to control the temperature,
the temperature of the house will vary according to the weather conditions outside the house. During the summer, the weather is very hot.
Some pets, such as broilers, may not be able to stand the heat. In order to avoid hot weather and to control the temperature of the house, a closed system house was invented by using the principle of water cooling and using a fan as an air vent. with a honeycomb (cooling pad) that allows water to flow through until wet When running the fan,
Smart Duration Control
which is opposite the honeycomb panel, the outside air is sucked through the honeycomb panel into the house. The house will be cool by using the principle of evaporation of water. In addition, closed system houses can also be very effective in preventing diseases, especially avian influenza.
Both open and closed systems have different advantages and disadvantages. The herdsman has to decide which system to use in the house, but in general, a closed system will help solve the problem of hot weather. and prevent disease better than open greenhouses The advantages and considerations of a closed system house are as follows:
strength
1. Reduce the stress caused by heat and make the chicken healthier.
2. In the father – broiler breeder will produce higher yields.
3. Reduce the mortality rate especially during hot weather
4. Use less fans compared to open schools. and is economical electric charge
5. Can be used in conjunction with an opaque system (dark-out) to raise broiler chickens more efficiently than an open house.
6. The air circulation inside the house is very consistent. Fresh air from outside will pass through the honeycomb panels into the house and exhaust air will be exhausted outside the house with a fan only for a short time. This can reduce the ammonia level problem in the house.
7. Better growth rate and good feed conversion efficiency in broiler chickens.
8. Reduce the use of antibiotics.
9. Able to raise more chickens than an open house compared to the same area
10. Able to control temperature, humidity, ventilation and lighting in the house
Considerations
1. High initial investment (depending on the efficiency of taking care of each farm)
2.Because the temperature control system of the house depends on many factors such as the type and size of the cooling plate. humidity levels outside and inside the house area and density of raising Number of fans and fan positioning To achieve air circulation at the appropriate wind speed and throughout the house must study knowledge and understanding of the system, practice and proper management methods
3. Animal husbandry that exceeds the scope of their ability to manage their rearing. The condition of the house and the number of equipment can cause health problems and yields that are below the standard
4. The size of the house in a farm enclosed system must take into account the farm’s all-in all-out handling capability. be exhausted within a period of time and make it necessary to bring animals Later generations gradually entered the house. While the previous set of animals are still being raised in greenhouses, it will certainly affect the health of the new generation of animals.
5. The house in a closed system is designed to help increase animal productivity. As for the prevention of disease or infection of animals, emphasis should be placed on the protection of farms in closed systems.
เอกสารอ้างอิง
[1] P. V. Nielsen, A. Restivo, and J. H. Whitelaw,
Transactions of ASME J. of Fluids Eng. 100,
(1978)
[2] S. Murakami, S. Kato, and Y. Suyama, ASHRAE
Transactions 93, (1987)
[3] V. Blanes-Vidal, E. Guijarro, A.G. Torres,
Application of computation fluid dynamics to the prediction of airflow in a mechanically ventilated
commercial poultry building,
Biosystems
Engineering. 100 (2008) 105-116.
[4] W. Chayanon, S. Ratchaphon, W. Sorayut, Development of a Suitable Air Condition Control System for a Closed-System Henhouse, Journal
of Materials Science and Engineering, B 1 (2011) 667-676.
[5] Aviagen Group. (2009) Broiler Management
Manual.
[6] Department of Livestock Development. The
Standards for Closed-System Henhouse of animal farms in Thailand (1999)
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