Modeling of waste heat powered energy system for container ships

Tao Cao; Hoseong Lee; Yunho Hwang; Reinhard Radermacher; Ho Hwan Chun

doi:10.1016/j.energy.2016.03.072

Modeling of waste heat powered energy system for container ships

Tao Cao, Hoseong Lee, Yunho Hwang, Reinhard Radermacher, Ho Hwan Chun

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

28 Citations (Scopus)

Abstract

A novel waste heat powered system is proposed to meet heating, cooling and refrigeration demands on a container ship to reduce its fuel consumption. A cascaded absorption-compression configuration is adopted to meet cooling and refrigeration demands simultaneously. Major components such as sea route weather, vapor compression cycle reefer units and main engine are modeled in details. The system is simulated under transient sea route weather conditions and loading/unloading conditions, and compared with the conventional system design. The conventional system simulation results are validated against experimental data with coefficient of variation of the root mean square error less than 30%. Simulation results revealed the proposed waste heat powered system is able to reduce diesel generator's fuel consumption by 38% and hot climate are in favor of fuel savings. Sankey diagram is used to analyze energy and CO₂ emission flows of both systems. It is concluded that direct emissions from diesel generators are the dominant factor in both systems. Replacing the conventional system with the waste heat powered system has negligible effects on the main engine fuel consumption for propulsion but reduces life cycle cost by 12%.

Original language	English
Pages (from-to)	408-421
Number of pages	14
Journal	Energy
Volume	106
DOIs	https://doi.org/10.1016/j.energy.2016.03.072
Publication status	Published - 2016 Jul 1
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by sponsors of the CEEE, University of Maryland , College Park, MD, Samsung Heavy Industry , and the National Research Foundation of Korea grant funded by the Korea government (MEST) through GCRC-SOP (Grant No. 2012-0004782 ).

Publisher Copyright:
© 2016 Elsevier Ltd.

Keywords

Cascaded cooling
Container ships
Energy saving
Refrigeration
Vapor compression cycle
Waste heat

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Modelling and Simulation
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Pollution
Energy(all)
Mechanical Engineering
Industrial and Manufacturing Engineering
Management, Monitoring, Policy and Law
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.energy.2016.03.072

Cite this

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abstract = "A novel waste heat powered system is proposed to meet heating, cooling and refrigeration demands on a container ship to reduce its fuel consumption. A cascaded absorption-compression configuration is adopted to meet cooling and refrigeration demands simultaneously. Major components such as sea route weather, vapor compression cycle reefer units and main engine are modeled in details. The system is simulated under transient sea route weather conditions and loading/unloading conditions, and compared with the conventional system design. The conventional system simulation results are validated against experimental data with coefficient of variation of the root mean square error less than 30%. Simulation results revealed the proposed waste heat powered system is able to reduce diesel generator's fuel consumption by 38% and hot climate are in favor of fuel savings. Sankey diagram is used to analyze energy and CO2 emission flows of both systems. It is concluded that direct emissions from diesel generators are the dominant factor in both systems. Replacing the conventional system with the waste heat powered system has negligible effects on the main engine fuel consumption for propulsion but reduces life cycle cost by 12%.",

keywords = "Cascaded cooling, Container ships, Energy saving, Refrigeration, Vapor compression cycle, Waste heat",

author = "Tao Cao and Hoseong Lee and Yunho Hwang and Reinhard Radermacher and Chun, {Ho Hwan}",

note = "Funding Information: This work was supported by sponsors of the CEEE, University of Maryland , College Park, MD, Samsung Heavy Industry , and the National Research Foundation of Korea grant funded by the Korea government (MEST) through GCRC-SOP (Grant No. 2012-0004782 ). Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd.",

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doi = "10.1016/j.energy.2016.03.072",

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volume = "106",

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AU - Cao, Tao

AU - Lee, Hoseong

AU - Hwang, Yunho

AU - Radermacher, Reinhard

AU - Chun, Ho Hwan

N1 - Funding Information: This work was supported by sponsors of the CEEE, University of Maryland , College Park, MD, Samsung Heavy Industry , and the National Research Foundation of Korea grant funded by the Korea government (MEST) through GCRC-SOP (Grant No. 2012-0004782 ). Publisher Copyright: © 2016 Elsevier Ltd.

PY - 2016/7/1

Y1 - 2016/7/1

N2 - A novel waste heat powered system is proposed to meet heating, cooling and refrigeration demands on a container ship to reduce its fuel consumption. A cascaded absorption-compression configuration is adopted to meet cooling and refrigeration demands simultaneously. Major components such as sea route weather, vapor compression cycle reefer units and main engine are modeled in details. The system is simulated under transient sea route weather conditions and loading/unloading conditions, and compared with the conventional system design. The conventional system simulation results are validated against experimental data with coefficient of variation of the root mean square error less than 30%. Simulation results revealed the proposed waste heat powered system is able to reduce diesel generator's fuel consumption by 38% and hot climate are in favor of fuel savings. Sankey diagram is used to analyze energy and CO2 emission flows of both systems. It is concluded that direct emissions from diesel generators are the dominant factor in both systems. Replacing the conventional system with the waste heat powered system has negligible effects on the main engine fuel consumption for propulsion but reduces life cycle cost by 12%.

AB - A novel waste heat powered system is proposed to meet heating, cooling and refrigeration demands on a container ship to reduce its fuel consumption. A cascaded absorption-compression configuration is adopted to meet cooling and refrigeration demands simultaneously. Major components such as sea route weather, vapor compression cycle reefer units and main engine are modeled in details. The system is simulated under transient sea route weather conditions and loading/unloading conditions, and compared with the conventional system design. The conventional system simulation results are validated against experimental data with coefficient of variation of the root mean square error less than 30%. Simulation results revealed the proposed waste heat powered system is able to reduce diesel generator's fuel consumption by 38% and hot climate are in favor of fuel savings. Sankey diagram is used to analyze energy and CO2 emission flows of both systems. It is concluded that direct emissions from diesel generators are the dominant factor in both systems. Replacing the conventional system with the waste heat powered system has negligible effects on the main engine fuel consumption for propulsion but reduces life cycle cost by 12%.

KW - Cascaded cooling

KW - Container ships

KW - Energy saving

KW - Refrigeration

KW - Vapor compression cycle

KW - Waste heat

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Modeling of waste heat powered energy system for container ships

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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