Modification of the Combustion Chamber and Drying Room on a Hybrid Type Rotary Dryer for Drying Grain

Oct 13, 2025 by wbrum.org 69 views

Modification of the Combustion Chamber and Drying Room on a Hybrid Type Rotary Dryer for Drying Grain

Introduction

The rotary hybrid type dryer is a drum that rotates continuously and is heated using a combustion furnace. This drying process utilizes a combination of convection and heat conduction to reduce water content in grain to be dried. In its operation, this tool experiences modifications that aim to improve work efficiency and speed up the drying process. The modification of the combustion chamber and drying room on a hybrid type rotary dryer is a crucial step in increasing productivity and efficiency in the agricultural sector.

Modification of the Combustion Chamber

One of the modifications made is the cutting of the chimney section. This modification aims to reduce heat loss in the combustion furnace, so that more heat can be used for the drying process. The cutting of the chimney section is a significant modification that has a direct impact on the efficiency of the dryer. By reducing heat loss, the dryer can utilize more heat to dry the grain, resulting in a faster and more efficient drying process.

Modification of the Drying Room

In addition to the modification of the combustion chamber, the hot air inlet channel is added which is tasked with distributing hot air into the drying chamber. This adjustment is important because the evenly distributed temperature in the drying space is very influential on the speed and effectiveness of the drying process. The hot air inlet channel ensures that the hot air is distributed evenly throughout the drying chamber, resulting in a more efficient and effective drying process.

Fuel Used and Drying Process

After modification, the fuel used in this tool is a coconut shell biomass with a fairly high heat value, which is 27,196 kJ/kg. The drying process is carried out at 5 kg of grain which is ready to harvest with an average water content of 26%. Drying results can meet the standard water content in accordance with BSNI regulations after 120 minutes. The use of coconut shell biomass as a fuel source is a positive contribution to sustainability and environmentally friendly practices.

Drying Results

From the measurements made, the measured relative humidity is 42% for drying with biomass energy and 41% for hybrid energy. The drying rate obtained using biomass energy reaches 4.8% wet weight per hour, while with hybrid energy reaching 5.10% wet weight per hour. Drying efficiency also shows significant differences; The efficiency of drying with biomass is 20%, while with a hybrid system reaching 26%. The results show that the hybrid system is more efficient than the biomass system.

Effective Capacity

The effective capacity of the work of this tool is 3.3 kg per hour. This number shows that the modifications made not only increase energy efficiency, but also speed up the drying process, thus allowing users to produce dry grain products that are faster and more efficient.

Conclusion

The development of a hybrid rotary dryer through modification of combustion space and drying space is a strategic step in increasing productivity and efficiency in the agricultural sector. The use of biomass as an energy source also makes a positive contribution to sustainability and environmentally friendly, as well as increasing the competitiveness of local agricultural products. This is important considering the need for high quality agricultural products and affordable by the community.

Recommendations

Based on the results of this study, the following recommendations are made:

The use of coconut shell biomass as a fuel source is recommended due to its high heat value and environmentally friendly practices.
The modification of the combustion chamber and drying room is recommended to increase energy efficiency and speed up the drying process.
The use of a hybrid system is recommended due to its higher efficiency compared to the biomass system.
Further research is needed to optimize the design and operation of the hybrid rotary dryer.

Future Research Directions

Future research directions include:

Optimizing the design and operation of the hybrid rotary dryer to increase energy efficiency and speed up the drying process.
Investigating the use of other biomass fuels as a source of energy.
Developing a more efficient and effective drying process using the hybrid rotary dryer.
Investigating the economic and environmental benefits of using the hybrid rotary dryer in the agricultural sector.
Frequently Asked Questions (FAQs) about the Modification of the Combustion Chamber and Drying Room on a Hybrid Type Rotary Dryer for Drying Grain

Q: What is the purpose of modifying the combustion chamber and drying room on a hybrid type rotary dryer?

A: The purpose of modifying the combustion chamber and drying room on a hybrid type rotary dryer is to increase energy efficiency and speed up the drying process, resulting in faster and more efficient production of dry grain products.

Q: What modifications were made to the combustion chamber?

A: The modifications made to the combustion chamber include the cutting of the chimney section to reduce heat loss and the addition of a hot air inlet channel to distribute hot air evenly throughout the drying chamber.

Q: What type of fuel was used in the modified hybrid rotary dryer?

A: The fuel used in the modified hybrid rotary dryer is coconut shell biomass, which has a high heat value of 27,196 kJ/kg.

Q: What were the results of the drying process using the modified hybrid rotary dryer?

A: The results of the drying process using the modified hybrid rotary dryer showed that the drying rate was 4.8% wet weight per hour using biomass energy and 5.10% wet weight per hour using hybrid energy. The drying efficiency was also higher using the hybrid system, at 26% compared to 20% using biomass energy.

Q: What is the effective capacity of the modified hybrid rotary dryer?

A: The effective capacity of the modified hybrid rotary dryer is 3.3 kg per hour, which shows that the modifications made not only increase energy efficiency but also speed up the drying process.

Q: What are the benefits of using the modified hybrid rotary dryer?

A: The benefits of using the modified hybrid rotary dryer include increased energy efficiency, faster drying process, and higher drying efficiency. The use of coconut shell biomass as a fuel source also makes a positive contribution to sustainability and environmentally friendly practices.

Q: What are the recommendations for future research and development?

A: The recommendations for future research and development include optimizing the design and operation of the hybrid rotary dryer, investigating the use of other biomass fuels as a source of energy, and developing a more efficient and effective drying process using the hybrid rotary dryer.

Q: What are the potential applications of the modified hybrid rotary dryer?

A: The potential applications of the modified hybrid rotary dryer include drying grain products, such as rice, wheat, and corn, as well as other agricultural products, such as fruits and vegetables.

Q: What are the potential benefits of using the modified hybrid rotary dryer in the agricultural sector?

A: The potential benefits of using the modified hybrid rotary dryer in the agricultural sector include increased productivity, efficiency, and competitiveness of local agricultural products, as well as reduced environmental impact and improved sustainability.

Q: What are the potential challenges and limitations of using the modified hybrid rotary dryer?

A: The potential challenges and limitations of using the modified hybrid rotary dryer include the high initial investment cost, the need for specialized maintenance and operation, and the potential for technical difficulties and equipment failures.

Q: What are the potential future developments and improvements of the modified hybrid rotary dryer?

A: The potential future developments and improvements of the modified hybrid rotary dryer include the development of more efficient and effective drying processes, the use of advanced technologies and materials, and the integration of the hybrid rotary dryer with other agricultural equipment and systems.