A high efficient combined multi-effect evaporation-absorption heat pump and vapor-compression refrigeration part 1: Energy and economic modeling and analysis

Iman Janghorban Esfahani; Yong Tae Kang; Chang Kyoo Yoo

doi:10.1016/j.energy.2014.07.081

A high efficient combined multi-effect evaporation-absorption heat pump and vapor-compression refrigeration part 1: Energy and economic modeling and analysis

Iman Janghorban Esfahani, Yong Tae Kang, Chang Kyoo Yoo

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

A novel combined system that combines a MEE-ABHP (multi-effect evaporation-absorption heat pump) with a VCR (vapor-compression refrigeration) cycle is proposed to simultaneously generate cooling and fresh water. In the combined system, the condenser of the VCR system is replaced by the MEE-ABHP system, where a portion of the fresh water produced in the last effect of the MEE (multi-effect evaporation) system is used as the refrigerant for the VCR system. In Part 1 of this two-part paper, model-based energy and cost analysis is developed to quantify and qualify the performance of the combined system. Parametric analysis is carried out to investigate the effects of absorber pressure (P_A), temperature difference between effects of the MEE subsystem (δT_MEE), temperature of the strong solution from absorber (T₁), and temperature of the weak solution from generator (T₄) on the performance of the system. In Part 2, thermo-economic and exergy analysis is conducted to evaluate the flexibility of the system for fuel allocation from different available power and heat energy sources. The results of Part 1 showed that the combined system can save 57.12%, 5.61%, and 25.6% in electric power, heat energy, and total annual cost compared to the stand-alone VCR and MEE-ABHP systems, respectively.

Original language	English
Pages (from-to)	312-326
Number of pages	15
Journal	Energy
Volume	75
DOIs	https://doi.org/10.1016/j.energy.2014.07.081
Publication status	Published - 2014 Oct 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government ( NRF-2012R1A1B3001400 ).

Publisher Copyright:
© 2014 Elsevier Ltd.

Keywords

Absorption
Combined system
Desalination
MEE (multi-effect evaporation)
Refrigeration
VCR (vapor-compression refrigeration)

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Pollution
Mechanical Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1016/j.energy.2014.07.081

Cite this

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title = "A high efficient combined multi-effect evaporation-absorption heat pump and vapor-compression refrigeration part 1: Energy and economic modeling and analysis",

abstract = "A novel combined system that combines a MEE-ABHP (multi-effect evaporation-absorption heat pump) with a VCR (vapor-compression refrigeration) cycle is proposed to simultaneously generate cooling and fresh water. In the combined system, the condenser of the VCR system is replaced by the MEE-ABHP system, where a portion of the fresh water produced in the last effect of the MEE (multi-effect evaporation) system is used as the refrigerant for the VCR system. In Part 1 of this two-part paper, model-based energy and cost analysis is developed to quantify and qualify the performance of the combined system. Parametric analysis is carried out to investigate the effects of absorber pressure (PA), temperature difference between effects of the MEE subsystem (δTMEE), temperature of the strong solution from absorber (T1), and temperature of the weak solution from generator (T4) on the performance of the system. In Part 2, thermo-economic and exergy analysis is conducted to evaluate the flexibility of the system for fuel allocation from different available power and heat energy sources. The results of Part 1 showed that the combined system can save 57.12%, 5.61%, and 25.6% in electric power, heat energy, and total annual cost compared to the stand-alone VCR and MEE-ABHP systems, respectively.",

keywords = "Absorption, Combined system, Desalination, MEE (multi-effect evaporation), Refrigeration, VCR (vapor-compression refrigeration)",

author = "{Janghorban Esfahani}, Iman and Kang, {Yong Tae} and Yoo, {Chang Kyoo}",

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doi = "10.1016/j.energy.2014.07.081",

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AU - Yoo, Chang Kyoo

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government ( NRF-2012R1A1B3001400 ). Publisher Copyright: © 2014 Elsevier Ltd.

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N2 - A novel combined system that combines a MEE-ABHP (multi-effect evaporation-absorption heat pump) with a VCR (vapor-compression refrigeration) cycle is proposed to simultaneously generate cooling and fresh water. In the combined system, the condenser of the VCR system is replaced by the MEE-ABHP system, where a portion of the fresh water produced in the last effect of the MEE (multi-effect evaporation) system is used as the refrigerant for the VCR system. In Part 1 of this two-part paper, model-based energy and cost analysis is developed to quantify and qualify the performance of the combined system. Parametric analysis is carried out to investigate the effects of absorber pressure (PA), temperature difference between effects of the MEE subsystem (δTMEE), temperature of the strong solution from absorber (T1), and temperature of the weak solution from generator (T4) on the performance of the system. In Part 2, thermo-economic and exergy analysis is conducted to evaluate the flexibility of the system for fuel allocation from different available power and heat energy sources. The results of Part 1 showed that the combined system can save 57.12%, 5.61%, and 25.6% in electric power, heat energy, and total annual cost compared to the stand-alone VCR and MEE-ABHP systems, respectively.

AB - A novel combined system that combines a MEE-ABHP (multi-effect evaporation-absorption heat pump) with a VCR (vapor-compression refrigeration) cycle is proposed to simultaneously generate cooling and fresh water. In the combined system, the condenser of the VCR system is replaced by the MEE-ABHP system, where a portion of the fresh water produced in the last effect of the MEE (multi-effect evaporation) system is used as the refrigerant for the VCR system. In Part 1 of this two-part paper, model-based energy and cost analysis is developed to quantify and qualify the performance of the combined system. Parametric analysis is carried out to investigate the effects of absorber pressure (PA), temperature difference between effects of the MEE subsystem (δTMEE), temperature of the strong solution from absorber (T1), and temperature of the weak solution from generator (T4) on the performance of the system. In Part 2, thermo-economic and exergy analysis is conducted to evaluate the flexibility of the system for fuel allocation from different available power and heat energy sources. The results of Part 1 showed that the combined system can save 57.12%, 5.61%, and 25.6% in electric power, heat energy, and total annual cost compared to the stand-alone VCR and MEE-ABHP systems, respectively.

KW - Absorption

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KW - Desalination

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A high efficient combined multi-effect evaporation-absorption heat pump and vapor-compression refrigeration part 1: Energy and economic modeling and analysis

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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