Design and Absorber Function

Oct 13, 2025 by windailys.com 33 views

Absorber Design on the Cooling Machine Using the Absorption Cycle with the Ammonia-Water Refrigerant-Absorbent Pair

In today's world, the cooling machine has become an essential component in our daily lives. With the increasing energy crisis, it is crucial to find innovative solutions to overcome this problem. One approach that can be taken is to utilize unused energy sources, such as exhaust gas, to increase the efficiency of cooling machines. The absorption cooling machine, which relies on exhaust gas as the main source of energy, is an interesting example in this regard. In this process, one of the key components that plays a vital role is the absorber, which functions as a container to dissolve the refrigerant and absorbent.

Design and Absorber Function

In this study, the type of absorber designed is the type of shell and tube, which is made of stainless steel 304. The main objective of this study is to design an absorber that is able to support the evaporator load of 50 W and evaluate the absorber performance as one of the components in the absorption cycle. The absorber is a critical component in the absorption cycle, as it is responsible for dissolving the refrigerant and absorbent, and transferring heat from the refrigerant to the absorbent.

The design of the absorber is a crucial aspect of the absorption cycle, as it affects the overall performance of the system. In this study, the absorber is designed to have a length of 61,0406 cm, a diameter of the tube of 14,3002 cm, and a diameter of the Shell 16,8275 cm. The design of the absorber is expected to increase the interaction between the refrigerant and absorbent, resulting in improved heat transfer rates.

Research Result

From the results of the analysis conducted, the absorber dimension designed was obtained with a length of 61,0406 cm, the diameter of the tube of 14,3002 cm, and the diameter of the Shell 16,8275 cm. Performance testing shows that the average heat transfer rate of absorber is as follows:

First test: 79,1284 kw
Second test: 78.43 kw
Third testing: 75.29 kw

From the data above, the average effectiveness of the three tests is 31.06%. This figure provides a good picture of the absorption of absorbers that are designed, although there is still room for further repairs.

Absorber Performance Analysis

The effectiveness of absorber obtained shows a pretty good performance in the context of the absorption-based cooling machine. However, there are several factors that can affect this performance, including:

Geometry Design: Dimensions and physical forms of absorber greatly affect the heat transfer process. Shell and tube design is expected to increase the interaction between refrigerant and absorbent, but more optimal designs may be needed to improve further efficiency.
Material Properties: The use of stainless steel 304 has the advantage of corrosion resistance, but it needs to be further investigated regarding its impact on thermal conductivity.
Operational Conditions: The temperature and pressure applied during the operation of the cooling machine will also greatly affect the absorber performance. Adjustment of operational conditions can improve overall system efficiency.

Conclusion

Absorber design on a cooling machine uses an absorption cycle with a pair of refrigerant-absorbent ammonia-water shows good potential in the use of wasted energy sources. With a predetermined dimension and design, absorber performance gives encouraging results. However, to achieve higher efficiency, further research is needed related to design and operational conditions. This effort not only contributes to energy savings, but also helps in overcoming the challenges of the energy crisis being faced today.

Future Research Directions

Based on the results of this study, several future research directions can be identified:

Optimization of Absorber Design: Further research is needed to optimize the design of the absorber, including the geometry and material properties.
Investigation of Operational Conditions: The impact of operational conditions on absorber performance needs to be further investigated, including the effects of temperature and pressure.
Development of New Materials: The development of new materials with improved thermal conductivity and corrosion resistance is needed to further improve absorber performance.

Conclusion

In conclusion, the absorber design on a cooling machine using the absorption cycle with the ammonia-water refrigerant-absorbent pair shows good potential in the use of wasted energy sources. With a predetermined dimension and design, absorber performance gives encouraging results. However, to achieve higher efficiency, further research is needed related to design and operational conditions. This effort not only contributes to energy savings, but also helps in overcoming the challenges of the energy crisis being faced today.

Recommendations

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

Further Research: Further research is needed to optimize the design of the absorber, including the geometry and material properties.
Development of New Materials: The development of new materials with improved thermal conductivity and corrosion resistance is needed to further improve absorber performance.
Implementation of Absorption Cycle: The implementation of the absorption cycle in cooling machines can help to reduce energy consumption and improve efficiency.

Limitations

This study has several limitations, including:

Limited Scope: The study only focuses on the design and performance of the absorber, and does not consider other components of the absorption cycle.
Limited Data: The study only uses a limited number of data points to evaluate the performance of the absorber.
Limited Materials: The study only uses stainless steel 304 as the material for the absorber, and does not consider other materials.

Future Work

Based on the results of this study, several future work can be identified:

Optimization of Absorber Design: Further research is needed to optimize the design of the absorber, including the geometry and material properties.
Investigation of Operational Conditions: The impact of operational conditions on absorber performance needs to be further investigated, including the effects of temperature and pressure.
Development of New Materials: The development of new materials with improved thermal conductivity and corrosion resistance is needed to further improve absorber performance.

Conclusion

In our previous article, we discussed the design and performance of the absorber on a cooling machine using the absorption cycle with the ammonia-water refrigerant-absorbent pair. In this article, we will answer some of the frequently asked questions related to this topic.

Q: What is the purpose of the absorber in the absorption cycle?

A: The absorber is a critical component in the absorption cycle, responsible for dissolving the refrigerant and absorbent, and transferring heat from the refrigerant to the absorbent.

Q: What is the design of the absorber in this study?

A: The absorber designed in this study is a shell and tube type, made of stainless steel 304. The dimensions of the absorber are 61,0406 cm in length, 14,3002 cm in diameter of the tube, and 16,8275 cm in diameter of the Shell.

Q: What are the performance results of the absorber?

A: The performance testing of the absorber shows an average heat transfer rate of 79,1284 kw, 78.43 kw, and 75.29 kw for the first, second, and third tests, respectively. The average effectiveness of the three tests is 31.06%.

Q: What factors can affect the performance of the absorber?

A: Several factors can affect the performance of the absorber, including:

Geometry Design: Dimensions and physical forms of absorber greatly affect the heat transfer process.
Material Properties: The use of stainless steel 304 has the advantage of corrosion resistance, but it needs to be further investigated regarding its impact on thermal conductivity.
Operational Conditions: The temperature and pressure applied during the operation of the cooling machine will also greatly affect the absorber performance.

Q: What are the future research directions for the absorber design?

A: Several future research directions can be identified, including:

Optimization of Absorber Design: Further research is needed to optimize the design of the absorber, including the geometry and material properties.
Investigation of Operational Conditions: The impact of operational conditions on absorber performance needs to be further investigated, including the effects of temperature and pressure.
Development of New Materials: The development of new materials with improved thermal conductivity and corrosion resistance is needed to further improve absorber performance.

Q: What are the recommendations for the implementation of the absorption cycle in cooling machines?

A: The implementation of the absorption cycle in cooling machines can help to reduce energy consumption and improve efficiency. However, further research is needed to optimize the design of the absorber and to investigate the impact of operational conditions on absorber performance.

Q: What are the limitations of this study?

A: This study has several limitations, including:

Limited Scope: The study only focuses on the design and performance of the absorber, and does not consider other components of the absorption cycle.
Limited Data: The study only uses a limited number of data points to evaluate the performance of the absorber.
Limited Materials: The study only uses stainless steel 304 as the material for the absorber, and does not consider other materials.

Q: What are the future work directions for the absorber design?

A: Several future work directions can be identified, including:

Optimization of Absorber Design: Further research is needed to optimize the design of the absorber, including the geometry and material properties.
Investigation of Operational Conditions: The impact of operational conditions on absorber performance needs to be further investigated, including the effects of temperature and pressure.
Development of New Materials: The development of new materials with improved thermal conductivity and corrosion resistance is needed to further improve absorber performance.

Conclusion