Thermodynamic modelling and performance study of an engine waste heat driven adsorption cooling for automotive air-conditioning

Ali, Syed Muztuza; Chakraborty, Anutosh

doi:10.1016/j.applthermaleng.2015.06.078

Cited by 56 publications

(15 citation statements)

References 27 publications

(30 reference statements)

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“…High energy is required for achieving the cooling and dehumidification load. However, a significant amount of this energy can be reduced by coupling the air conditioning system with alternative energy resources involving solar energy [11,12], wind energy [13,14], and waste heat from industrial processes [15,16]. Additionally, other than using the hybrid or coupling system, the separation of the sensible and latent load can also reduce the power inputs within the system [17].…”

Section: Introductionmentioning

confidence: 99%

Influence of Phase Change Phenomena on the Performance of a Desiccant Dehumidification System

et al. 2020

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Demands of standalone dehumidification systems have been increasing in order to realize energy savings in air-conditioning processes. In a desiccant dehumidification system, the water vapor from the moist air undergoes a phase change phenomenon, this being from vapor to adsorbed phase, a process analogous to latent heat exchange. The energy exchange involved in such a process is often significant—up to 80% of the total energy exchange. In this study, the influence of the phase change phenomena involved in a desiccant dehumidification system was evaluated experimentally, along with the performance investigation under low desorption air temperatures of 308, 318, 328, 338, and 345 K. The system was driven by a constant adsorption temperature of 293 K. The dehumidification ability, latent heat ratio, and latent effectiveness were employed as key performance indexes. The results showed that with the increased desorption temperature, the latent heat ratio decreased, whereas the dehumidification ability and latent effectiveness increased. The highest latent heat ratio was found to be 0.61 at the desorption temperature of 308 K, whereas the highest latent effectiveness was obtained at the desorption temperature of 345 K. A suitable temperature for the effective and efficient dehumidification was observed to be 318 K for the current system.

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Section: Introductionmentioning

confidence: 99%

Influence of Phase Change Phenomena on the Performance of a Desiccant Dehumidification System

et al. 2020

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“…It may be due to the fact that the heat losses related to the alternate heating cooling of the bed increase by raising the bed's temperature. Few experimental data and calculations on adsorption chillers powered by engine waste-heat with heat recovery system can be found in the open literature [37].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a waste-heat driven adsorption system for automotive air-conditioning: Part I – Modeling and experimental validation

Verde

Harby

Boer

et al. 2016

Energy

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Adsorption systems driven by engine waste heat are one of the possible alternatives to the conventional automobile air conditioning in terms of energy savings and environmental issues. Assessment of this issue are carried in a two-part study. In this first part I, theoretical and experimental investigations were performed on a two bed, silica gel adsorption chiller for automotive applications. A prototype adsorption system with a total weight of about 86 kg was developed and tested to driven by low-grade waste heat. The single adsorbent bed consisted of three plate-fin heat exchangers connected in parallel. An improved nonequilibrium lumped parameter model was developed to predict the transient performance of the system. The model is fully dynamic and takes into account the mass transfer resistance and pressure drop for each component of the system. The results showed that the model is able to accurately predict the dynamic performance of the system under different operating conditions and configuration modes with a short calculation time. The tested chiller was able to produce an average cooling capacity of about 2.1 kW with a COP of 0.35 at the rated operating conditions. Heat recovery system results in increasing the COP by 43% and the cooling power by 4%.

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“…Much work about adsorption air-conditioning systems powered by waste heat from internal combustion engines has been done (Ali and Chakraborty, 2015;Amir et al, 2015;Jiangzhou et al, 2005;Jribi et al, 2013Jribi et al, , 2014Lu et al, 2003;Ramji et al, 2014;Wang et al, 2007;Wang et al, 2008). Just as mentioned above, the waste heat is from the engine cooling water and the exhaust gas.…”

Section: Introductionmentioning

confidence: 99%

Optimization and performance experiments of a MnCl2/CaCl2–NH3 two-stage solid sorption freezing system for a refrigerated truck

Gao

Wang

et al. 2016

International Journal of Refrigeration

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Based on the earlier-established MnCl 2 /CaCl 2-NH 3 two-stage solid sorption freezing system for a refrigerated truck, a series of optimization designs are conducted in this prototype system. For sorption beds consisting of many unit tubes, the arrangement mode is changed to the staggered arrangement. Off-the-shelf heat exchangers from refrigeration industries are chosen as the evaporator and the condenser, and an expansion valve is also used. The total mass of the optimized system is reduced to approximately 150 kg. Firstly, different refrigerating temperatures ranging from-25 o C to 0 o C are investigated, and experimental results show the optimized system can easily satisfy requirement even for transporting frozen goods. The earlier-established system can only satisfy requirement for transporting fresh goods. Simultaneously, the cycle time can be reduced to 45 min. Through the optimization, both the refrigerating capacity and the total mass of the system can satisfy requirement of this refrigerated truck.

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Thermodynamic modelling and performance study of an engine waste heat driven adsorption cooling for automotive air-conditioning

Cited by 56 publications

References 27 publications

Influence of Phase Change Phenomena on the Performance of a Desiccant Dehumidification System

Influence of Phase Change Phenomena on the Performance of a Desiccant Dehumidification System

Performance evaluation of a waste-heat driven adsorption system for automotive air-conditioning: Part I – Modeling and experimental validation

Optimization and performance experiments of a MnCl2/CaCl2–NH3 two-stage solid sorption freezing system for a refrigerated truck

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