Simulation of a simple absorption refrigeration system

Joudi, Khalid A.; Lafta, Ali H

doi:10.1016/s0196-8904(00)00155-2

Cited by 69 publications

(39 citation statements)

References 5 publications

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“…The unknown values of the on-design [39]. A comparison between the on-design simulation results of the present study and Khalid's model is shown in Table 2, which indicates good agreement.…”

Section: Model Validationsupporting

confidence: 61%

“…Table 3 shows the off-design COP values of the system using different models when the inlet hot water temperature varies from 75 C to 95 C.The COPs of Model 3 have the minimum relative errors under different conditions. The heat and mass transfer model used in the present study clearly achieves a positive result and high simulation accuracy, although it is much simpler than the Khalid's model [39]. Model 3 is further discussed in the next section.…”

Section: Model Validationmentioning

confidence: 72%

“…The model of the absorption chiller is validated using the simulation data of Khalid [39]. Khalid's model is based on the detailed mass and energy balances and complicated heat and mass transfer relationships for each component; its validity is established by comparing it with the manufacturer's data and with other works.…”

Section: Model Validationmentioning

confidence: 99%

“…The predicted part load efficiency of the MGT is compared with the curve provided by the manufacturer. The part load COP of the absorption chiller was validated using the simulation data from Khalid [39]. The effects of the part load and ambient temperature on the system are analyzed in the last section of the paper.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Steady-state off-design thermodynamic performance analysis of a SCCP system

Zhang

Chi

et al. 2015

Applied Thermal Engineering

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Section: Model Validationsupporting

confidence: 61%

Section: Model Validationmentioning

confidence: 72%

Section: Model Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Steady-state off-design thermodynamic performance analysis of a SCCP system

Zhang

Chi

et al. 2015

Applied Thermal Engineering

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“…In another field of investigations, various researchers have developed models of conventional LiBr-H 2 0 absorption machines with the aim of predicting their performance. The effect of several operating variables or conditions on the 0 © functioning of the absorption refrigeration system is a common objective in the papers by Hellmann et al (1998), Joudi and Lafta (2001), Florides et al (2003), among others. We want to use the model developed by Hellmann et al (1998), which is able to represent both the capacity and the COP of single effect absorption chillers and heat pumps by means of simple algebraic equations.…”

Section: Introductionmentioning

confidence: 99%

Extension of the characteristic equation to absorption chillers with adiabatic absorbers

Gutiérrez-Urueta

Rodríguez

Ziegler

et al. 2012

International Journal of Refrigeration

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Various researchers have developed models of conventional H 2 0-LiBr absorption machines with the aim of predicting their performance. In this paper, the methodology of characteristic equations developed by Hellmann et al. (1998) is applied. This model is able to represent the capacity of single effect absorption chillers and heat pumps by means of simple algebraic equations. An extended characteristic equation based on a characteristic temperature difference has been obtained, considering the facility features. As a result, it is concluded that for adiabatic absorbers a subcooling temperature must be specified. The effect of evaporator overflow has been characterized. Its influence on cooling capacity has been included in the extended characteristic equation. Taking into account the particular design and operation features, a good agreement between experimental performance data and those obtained through the extended characteristic equation has been achieved at offdesign operation. This allows its use for simulation and control purposes. Extension d'une equation caracteristique aux refroidisseurs a absorption munis d'absorbeurs adiabatiques

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Optimum heat storage design for solar‐driven absorption refrigerators integrated with heat exchanger networks

et al. 2013

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A methodology is presented for optimizing hybrid renewable energy-fossil fuel systems with short-term heat storage. The considered system is an absorption-refrigeration (AR) cycle integrated with a heat exchanger network (HEN) requiring cooling below ambient temperature. The AR cycle can be driven by multiple energy sources including excess energy from hot process streams, renewable energy sources (solar and biofuels), and fossil fuels. A two-step approach based on mixed integer nonlinear programming methods is used for the optimization. First, the problem of optimal energy integration in the hybrid energy system without heat storage is solved on a monthly basis by minimizing simultaneously the total annual cost and the overall greenhouse gas emissions. In the second step, the multi-tank thermal energy storage (TES) design problem is solved. The design involves the identification of the optimal number of storage tanks, their sizes, configuration and operation policies. The TES optimization is carried out on an hourly basis while incorporating the design targets determined by the first step. V C 2013 American Institute of Chemical Engineers AIChE J, 60: 909-930, 2014

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Simulation of a simple absorption refrigeration system

Cited by 69 publications

References 5 publications

Steady-state off-design thermodynamic performance analysis of a SCCP system

Steady-state off-design thermodynamic performance analysis of a SCCP system

Extension of the characteristic equation to absorption chillers with adiabatic absorbers

Optimum heat storage design for solar‐driven absorption refrigerators integrated with heat exchanger networks

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