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Energetic and exergetic analyses of adsorption heat transformer ameliorated by ejector

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Journal of the Brazilian Society of Mechanical Sciences and Engineering Aims and scope Submit manuscript

Abstract

The work presented in this paper is an analysis of an energetic and exergetic geothermal energy-assisted adsorption heat transformer. The zeolite 13X-H2O couple is used to recover energy and minimize irreversibility effects. A comparison of the obtained results for a simple adsorption heat transformer with ejector is carried out. It is observed that the ejection system shows a lower total of irreversibility than the simple system. The simulation results show that the exergetic performance and efficiency of a cycle of an adsorption heat transformer with ejector are important. It is 12 and 10 %, respectively, higher with respect to a base cycle in the same operating conditions.

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Abbreviations

T :

Temperature [°C]

P :

Pressure [Pa]

ρ :

Density [kg/m3]

ma:

Adsorbed mass [kg/kg]

ω 0 :

Maximal couple adsorbable [m3/kg]

D, n :

Characteristic parameters torque adsorbent/adsorbate (refrigerant)

ΔH :

Enthalpy variation [J/kg k]

L :

Latent heat of evaporation [J/kg]

R :

Constant de la thermodynamics

Q :

Heat energy [J]

C p :

Specific heat [J/kg k]

COP:

Coefficient of performance

M s :

Adsorpt if mass couple [kg]

h :

Enthalpy [J/kg·k], hot

s :

Entropy [J/kg k]

\( \dot{m} \) :

Mass flow [kg/s]

\( \dot{E}x \) :

Exergy [kw]

Ψ:

Exergy content [kJ/kg]

η :

Rendement exergétique

n :

Constant solid/steam

i :

Inlet

o :

Outelet

m :

Medium

EAHT:

Ejector adsorption heat transformer

AHT:

Adsorption heat transformer

Des:

Desorber, desorption, Destruction

ad:

Adsorber, adsorption

cond:

Condenser, condensation

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Authors and Affiliations

  1. Laboratory of Materials and Reactive Systems (LMSR)-Mechanical Engineering Department- Faculty of Technology, University of Sidi Bel Abbes ALGERIA, BP 89 Cité Ben M’Hidi, Sidi Bel Abbès, 22000, Algeria

    A. Alami, A. Khalfi & M. H. Benzaama

  2. Mechanical Engineering Department- Faculty of Technology, University of Sidi Bel Abbes ALGERIA, BP 89 Cité Ben M’Hidi, 22000, Sidi Bel Abbès, Algeria

    M. Makhlouf

  3. Laboratory Mechanics of Structures and Solids (LMSS)-Mechanical Engineering Department- Faculty of Technology, University of Sidi Bel Abbes ALGERIA, BP 89 Cité Ben M’Hidi, 22000, Sidi Bel Abbès, Algeria

    A. Lousdad

Authors
  1. A. Alami
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  2. M. Makhlouf
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  3. A. Lousdad
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  4. A. Khalfi
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  5. M. H. Benzaama
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Correspondence to A. Alami.

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Technical Editor: Jose A. dos Reis Parise.

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Alami, A., Makhlouf, M., Lousdad, A. et al. Energetic and exergetic analyses of adsorption heat transformer ameliorated by ejector. J Braz. Soc. Mech. Sci. Eng. 38, 2077–2084 (2016). https://doi.org/10.1007/s40430-016-0593-8

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  • DOI: https://doi.org/10.1007/s40430-016-0593-8

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