Limits...
Thermodynamic analysis and optimization of a high temperature triple absorption heat transformer.

Khamooshi M, Parham K, Yari M, Egelioglu F, Salati H, Babadi S - ScientificWorldJournal (2014)

Bottom Line: First law of thermodynamics has been used to analyze and optimize inclusively the performance of a triple absorption heat transformer operating with LiBr/H2O as the working pair.A thermodynamic model was developed in EES (engineering equation solver) to estimate the performance of the system in terms of the most essential parameters.The optimization results showed that the COP of 0.2491 is reachable by the proposed cycle.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering, Eastern Mediterranean University, G. Magosa, North Cyprus, Mersin 10, Turkey.

ABSTRACT
First law of thermodynamics has been used to analyze and optimize inclusively the performance of a triple absorption heat transformer operating with LiBr/H2O as the working pair. A thermodynamic model was developed in EES (engineering equation solver) to estimate the performance of the system in terms of the most essential parameters. The assumed parameters are the temperature of the main components, weak and strong solutions, economizers' efficiencies, and bypass ratios. The whole cycle is optimized by EES software from the viewpoint of maximizing the COP via applying the direct search method. The optimization results showed that the COP of 0.2491 is reachable by the proposed cycle.

Show MeSH

Related in: MedlinePlus

The effect of Teva on the COP of the cycle for three different Tabs.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC4127287&req=5

fig8: The effect of Teva on the COP of the cycle for three different Tabs.

Mentions: As it can be seen in Figure 8 when Teva which is equal to Tgen increases, the COP would also increase. This is due to the fact that the maximum pressure of the system has direct relation with the evaporator's temperature. By increasing the maximum pressure of the system the weak solution concentration will decrease by decreasing flow ratio. The lower flow ratio means higher absorber heat capacity and the higher COP. This result achieves harmony with those reported in [1, 10, 19, 27]. Also it is clear that as the gross temperature lift (GTL = Tabs − Teva) decreases the COP and increases rapidly. From the first law of thermodynamics it is explicit that the system has to reduce its efficiency as the absorber increases its temperature which is in accordance with the results available in [8, 27, 37, 38].


Thermodynamic analysis and optimization of a high temperature triple absorption heat transformer.

Khamooshi M, Parham K, Yari M, Egelioglu F, Salati H, Babadi S - ScientificWorldJournal (2014)

The effect of Teva on the COP of the cycle for three different Tabs.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4127287&req=5

fig8: The effect of Teva on the COP of the cycle for three different Tabs.
Mentions: As it can be seen in Figure 8 when Teva which is equal to Tgen increases, the COP would also increase. This is due to the fact that the maximum pressure of the system has direct relation with the evaporator's temperature. By increasing the maximum pressure of the system the weak solution concentration will decrease by decreasing flow ratio. The lower flow ratio means higher absorber heat capacity and the higher COP. This result achieves harmony with those reported in [1, 10, 19, 27]. Also it is clear that as the gross temperature lift (GTL = Tabs − Teva) decreases the COP and increases rapidly. From the first law of thermodynamics it is explicit that the system has to reduce its efficiency as the absorber increases its temperature which is in accordance with the results available in [8, 27, 37, 38].

Bottom Line: First law of thermodynamics has been used to analyze and optimize inclusively the performance of a triple absorption heat transformer operating with LiBr/H2O as the working pair.A thermodynamic model was developed in EES (engineering equation solver) to estimate the performance of the system in terms of the most essential parameters.The optimization results showed that the COP of 0.2491 is reachable by the proposed cycle.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical Engineering, Eastern Mediterranean University, G. Magosa, North Cyprus, Mersin 10, Turkey.

ABSTRACT
First law of thermodynamics has been used to analyze and optimize inclusively the performance of a triple absorption heat transformer operating with LiBr/H2O as the working pair. A thermodynamic model was developed in EES (engineering equation solver) to estimate the performance of the system in terms of the most essential parameters. The assumed parameters are the temperature of the main components, weak and strong solutions, economizers' efficiencies, and bypass ratios. The whole cycle is optimized by EES software from the viewpoint of maximizing the COP via applying the direct search method. The optimization results showed that the COP of 0.2491 is reachable by the proposed cycle.

Show MeSH
Related in: MedlinePlus