Experimental thermodynamic evaluation for a single stage heat transformer prototype build with commercial PHEs

Ibarra-Bahena, Jonathan; Romero, R.J.; Velazquez-Avelar, L.; Valdez-Morales, C.V.; Galindo-Luna, Yuridiana Rocio

doi:10.1016/j.applthermaleng.2014.05.018

Cited by 131 publications

(10 citation statements)

References 22 publications

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“…The citation to papers indicates that some systems have been implemented for that purpose. The installation has two main problems: low efficiency for comparison with other technologies [35][36][37][38][39] and higher cost compared with conventional systems [40].…”

Section: Water Distillationmentioning

confidence: 99%

Energy Evaluation of the Use of an Absorption Heat Pump in Water Distillation Process

Romero¹,

Silva-Sotelo²

2017

Distillation - Innovative Applications and Modeling

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It is impossible to transform the whole energy into useful work. It is impossible to increase the processes of cultivation of foods without water. It is impossible to separate all ions and minerals from water. Most of the real processes are thermodynamically irreversible. Calculations may indicate the fraction of efficiency of a thermal process. All the above mentioned facts have led to some proposals of cycles that exchange energy in order to produce a useful effect for the society. The key sustainable related parts are: to obtain water free of minerals or ions by distillation process. In this chapter, thermodynamic cycles will be explained for distillation using thermodynamic cycles of thermal machines called absorption heat pumps (AHPs). Distillation process offers to the AHPs an opportunity to diminish the consumptions of fossil fuels. The AHPs are able to work with 2% of mechanical energy to carry out a sustainable distillation process. Most of the energy of an absorption heat pump operation is thermal energy. The operation of the AHPs are defined with the coefficient of performance (COP); the variations of this parameter are shown as function of the different scenarios to obtain sustainable distilled water.

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Section: Water Distillationmentioning

confidence: 99%

Energy Evaluation of the Use of an Absorption Heat Pump in Water Distillation Process

Romero¹,

Silva-Sotelo²

2017

Distillation - Innovative Applications and Modeling

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“…The system was designed to deliver 2.71 kW of cooling at an extreme ambient temperature of 51.7°C while obtaining a COP of 0.55. Ibarra-Bahena et al 26 29 performed a numerical study of the bubble absorption process with three different mixtures. Experiments were performed at ambient temperatures from 29.7°C to 44.2°C, delivering cooling duties of 2.54 to 1.91 kW.…”

Section: Introductionmentioning

confidence: 99%

“…The authors described that the technique could be of considerable use for improving the design of all types of PHE. Ibarra-Bahena et al 26 reported the experimental results of a single-stage heat transformer using PHE in all the main components. The system operated with a water-carrol mixture.…”

Section: Introductionmentioning

confidence: 99%

Parametric analysis on the performance of an experimental ammonia/lithium nitrate absorption cooling system

Jiménez‐García

Rivera

2018

Int J Energy Res

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Summary The present study reports the experimental results of a new absorption cooling system utilizing stainless steel plate heat exchangers in all the main components. The system operated with the ammonia‐lithium nitrate working pair. Several parametric analyses were performed in order to investigate the effect of the generation and condensation temperatures, solution mass flow rate, solution volume and expansion valve aperture on the cooling power, evaporation temperatures, and coefficient of performance (COP). Generation temperatures varied from 80°C to 95°C, while condensation temperatures varied between 20°C and 32°C. The system achieved a cooling power of 3.1 kW, cooling temperatures as low as 6°C, and internal coefficients of performance of approximately 0.62. The cooling power increased 20.3% with an increment of the solution mass flow rate from 1 kg/min to 4 kg/min. From the expansion valve analysis, it was found the cooling power varied from 0.28 to 2.29 kW while the COP varied from 0.032 to 0.23 for the corresponding test conditions.

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“…The absorption heat transformers are also investigated with interest for waste-heat reutilization within industrial processes, due to their favorable economics and mild environmental effects. [22][23][24][25][26][27][28] The thermal performance of an absorption refrigeration system is greatly dependent on the physical and chemical properties of the working fluids used. [29][30][31] Up to now, only two refrigerant mixtures, NH 3 −H 2 O and LiBr− H 2 O, are widely employed in commercialized absorption chillers.…”

Section: Introductionmentioning

confidence: 99%

Modeling of the thermodynamic properties of the methylamine/water refrigerant mixture

Mejbri¹,

Bellagi²

2018

IPCSE

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Experimental thermodynamic evaluation for a single stage heat transformer prototype build with commercial PHEs

Cited by 131 publications

References 22 publications

Energy Evaluation of the Use of an Absorption Heat Pump in Water Distillation Process

Energy Evaluation of the Use of an Absorption Heat Pump in Water Distillation Process

Parametric analysis on the performance of an experimental ammonia/lithium nitrate absorption cooling system

Modeling of the thermodynamic properties of the methylamine/water refrigerant mixture

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