Low-temperature multiple-effect desalination/organic Rankine cycle system with a novel integration for fresh water and electrical energy production

Aguilar-Jiménez, J.A.; Velázquez, N.; López-Zavala, R.; Beltrán, Ricardo; Hernández-Callejo, Luís; González-Uribe, L.A.; Alonso‐Gómez, Víctor

doi:10.1016/j.desal.2019.114269

Cited by 40 publications

(12 citation statements)

References 38 publications

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“…The remaining steam is used to activate the following effects and repeat the MED operating process mentioned in configuration 1. This integration can be seen in Figure 2 and was technically analyzed in the work of Aguilar-Jiménez et al 26 To achieve this energy integration, the ORC evaporation temperature must be lower than the TBT of the MED system in order to perform the heat exchange. Since it is a phase change heat exchange, the steam coming from the MED remains at a constant temperature and its operating pressure and temperature conditions are not modified.…”

Section: Configuration 2: Med and Orc With Integration In The First E...mentioning

confidence: 99%

Use of sensible and latent condensation heat of an organic Rankine cycle in a multiple‐effect desalination system: A comparative study of novel energy integrations

Aguilar-Jiménez

Velázquez

López-Zavala

et al. 2022

Intl J of Energy Research

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Summary This paper presents a comparative study of novel energy integrations between Multiple‐Effect Desalination (MED) and Organic Rankine Cycle (ORC) systems for the simultaneous production of desalinated water and electric power. Two new MED/ORC configurations are proposed, where part of the sensible and/or latent heat of condensation of the ORC is used to potentiate the generation of steam in the last effect of the MED, taking advantage of the temperature levels present in the MED. A simulator of the proposals was developed and validated with experimental results reported in the literature. These configurations are compared energetically with the MED and ORC systems working individually and against another previously proposed configuration, also considering the impact of the integrations on the heat transfer area required by the systems. The results show a decrease in the thermal energy requirements for the activation of the MED system with the new integrations. The energy requirements of the MED are reduced by 28% when integrated into the first effect with the ORC evaporator. The utilization of the sensible heat of condensation of the ORC in configuration 3 did not present a considerable energy decrease compared to configuration 2, due to the limited sensible heat available for its recovery, of approximately 22 kW. The usage of the latent heat of condensation of the ORC in configuration 4 implies that increasing the condensation temperature and pressure of the ORC, decreases its efficiency by 1.8% and increasing the energy required by 221 kW provides the two services simultaneously.

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Section: Configuration 2: Med and Orc With Integration In The First E...mentioning

confidence: 99%

Use of sensible and latent condensation heat of an organic Rankine cycle in a multiple‐effect desalination system: A comparative study of novel energy integrations

Aguilar-Jiménez

Velázquez

López-Zavala

et al. 2022

Intl J of Energy Research

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“…[ 62 ] The integration of MED with a serial‐cascaded ORC has been proposed, as shown in Figure 5b. [ 63 ] In the proposed integration, the heat required for vaporization in the first effect of MED was jointly supplied by both MED and ORC through the direct coupling of the ORC's evaporator with the first effect of the MED. The MED evaporators supplied the thermal energy required for the operation, whereas a portion of the latent heat of condensation of the water vapor generated in the first effect of the MED was used to activate the ORC for electrical energy production.…”

Section: Strategies For Energy Reduction In Desalination Processesmentioning

confidence: 99%

Energy Efficient Seawater Desalination: Strategies and Opportunities

2021

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With the change in climate patterns, rapid industrialization, and population growth, the increasing water and energy demand became a major concern in the past decades. Desalination has been touted as the answer to the global water crisis, due to its capability in producing high‐quality fresh water from saline water. The continual research and innovations in the desalination field have resulted in the commercialization of large‐scale desalination in many water scarce regions. In the energetic context, all desalination processes are energy intensive. With the necessity to make desalination a more affordable and sustainable process, the energy efficiency of desalination is becoming an important topic. Herein, it is aimed to provide insights into the recent efforts and strategies established to tackle the energy‐related issues of both, thermal‐based and membrane‐based desalination processes. Depending on the principle of various commercial and emerging desalination processes, the directions of energy efficiency improvements, which include operating condition optimization, high‐performance material development, and renewable energy exploitation are discussed. The ideas and strategies reviewed herein, whether in their implementation or theoretical stage, are expected to provide insights into the possible improvement for application in commercial desalination plants.

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“…The analysis done so far is based on four number of effects, but as in literature, the higher number of effects bring about a progressive influence on thermodynamic performance as well as unit product cost [45,67]. Hence, the discussed systems have also been critically analyzed for the number of effects up to eight.…”

Section: Effect Of Number Of Evaporatorsmentioning

confidence: 99%

Exergoeconomic optimization of a forward feed multi-effect desalination system with and without energy recovery

et al. 2021

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Low-temperature multiple-effect desalination/organic Rankine cycle system with a novel integration for fresh water and electrical energy production

Cited by 40 publications

References 38 publications

Use of sensible and latent condensation heat of an organic Rankine cycle in a multiple‐effect desalination system: A comparative study of novel energy integrations

Use of sensible and latent condensation heat of an organic Rankine cycle in a multiple‐effect desalination system: A comparative study of novel energy integrations

Energy Efficient Seawater Desalination: Strategies and Opportunities

Exergoeconomic optimization of a forward feed multi-effect desalination system with and without energy recovery

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