Environmental Impact Assessment for an Absorption Heat Transformer

Patiño, J.; Martínez, Antonio Rodríguez; Romero, R.J.; Ibarra-Bahena, Jonathan; Patiño, Martha Lilia Domínguez

doi:10.4236/ojapps.2016.67042

Cited by 2 publications

(1 citation statement)

References 8 publications

(7 reference statements)

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“…This paper proposes a parabolic trough collector coupled to a low enthalpy geothermal well as a hybrid thermal source for an Absorption Air-Conditioning System (AACS). This system uses sodium hydroxide-water (NaOH-H 2 O) to reduce the cost three-fold compared with the use of LiBr-H 2 O [38][39][40]. The use of solar energy as a thermal source reduces electric power consumption; PTCs are an option for the AACS thermal demand [8].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Solar-Geothermal Energy Absorption Air-Conditioning System Operating with NaOH-H2O—Las Tres Vírgenes (Baja California Sur), “La Reforma” Case

Galindo-Luna

Gómez‐Arias

Romero³

et al. 2018

Energies

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Solar and geothermal energies are considered cleaner and more useful energy sources that can be used to avoid the negative environmental impacts caused by burning fossil fuels. Several works have reported airconditioning systems that use solar energy coupled to geothermal renewable energy as a thermal source. In this study, an Absorption AirConditioning System (AACS) used sodium hydroxide-water (NaOH-H 2 O) instead of lithium bromide-water to reduce the cost. Low enthalpy geothermal heat was derived from two shallow wells, 50 and 55 m deep. These wells are of interest due to the thermal recovery (temperature vs. time) of 56.2 • C that was possible at the maximum depth, which can be used for the first stage of the process. These wells were coupled with solar energy as a geothermal energy application for direct uses such as airconditioning systems. We studied the performance of an absorption cooling system operating with a NaOH-H 2 O mixture and using a parabolic trough plant coupled with a low enthalpy geothermal heat system as a hybrid heat source, as an alternative process that can help reduce operating costs and carbon dioxide emissions. The numerical heat transfer results showed the maximum convective heat transfer coefficient, as function of fluid velocity, and maximum temperature for a depth higher than 40 m. The results showed that the highest temperatures occur at low fluid velocities of less than or equal to 5.0 m/s. Under these conditions, reaching temperatures between 51.0 and 56.2 • C in the well was possible, which is required of the geothermal energy for the solar energy process. A water stream was used as the working fluid in the parabolic trough collector field. During the evaluation stage, the average experimental storage tank temperature achieved by the parabolic trough plant was

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Section: Introductionmentioning

confidence: 99%

Hybrid Solar-Geothermal Energy Absorption Air-Conditioning System Operating with NaOH-H2O—Las Tres Vírgenes (Baja California Sur), “La Reforma” Case

Galindo-Luna

Gómez‐Arias

Romero³

et al. 2018

Energies

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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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Environmental Impact Assessment for an Absorption Heat Transformer

Cited by 2 publications

References 8 publications

Hybrid Solar-Geothermal Energy Absorption Air-Conditioning System Operating with NaOH-H2O—Las Tres Vírgenes (Baja California Sur), “La Reforma” Case

Hybrid Solar-Geothermal Energy Absorption Air-Conditioning System Operating with NaOH-H2O—Las Tres Vírgenes (Baja California Sur), “La Reforma” Case

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

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