Performance improvement of a dehumidifying heat pump using an additional waste heat source in electric vehicles with low occupancy

Jae Hwan Ahn; Joo Seong Lee; Changhyun Baek; Yongchan Kim

doi:10.1016/j.energy.2016.08.104

Performance improvement of a dehumidifying heat pump using an additional waste heat source in electric vehicles with low occupancy

Jae Hwan Ahn
, Joo Seong Lee
, Changhyun Baek
, Yongchan Kim^*

^*Corresponding author for this work

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

36 Citations (Scopus)

Abstract

A DHP (dehumidifying heat pump) has been proposed to save energy consumption in electric vehicles during the dehumidifying and heating operation. Since the mean occupancy rate in a vehicle is less than two people, it is required to optimize the performance of the DHP at low occupancy for an effective operation. The objective of this study is to investigate the performance improvement of a DHP by using the additional waste heat source in electric vehicles with low occupancy. The experiments on the DHP were conducted by varying operating modes, according to various numbers of passengers. Even though the air source DHP in an AL (alternating) mode showed 7.6% lower heating capacity on average, compared to that in the DH (dehumidifying and heating) mode, the COP improvement of the air source DHP in the AL mode against the DH mode was approximately 31% for one passenger. In addition, the dual source DHP in the AL mode showed 15.8% higher heating capacity and 5.2% higher COP on average, compared to the air source DHP in the AL mode.

Original language	English
Pages (from-to)	67-75
Number of pages	9
Journal	Energy
Volume	115
DOIs	https://doi.org/10.1016/j.energy.2016.08.104
Publication status	Published - 2016 Nov 15

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Air source
Dehumidifying
Electric vehicle
Heat pump
Low occupancy
Waste heat source

ASJC Scopus subject areas

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

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10.1016/j.energy.2016.08.104

Cite this

@article{0035a1347a0b46219ab24ff5d099756c,

title = "Performance improvement of a dehumidifying heat pump using an additional waste heat source in electric vehicles with low occupancy",

abstract = "A DHP (dehumidifying heat pump) has been proposed to save energy consumption in electric vehicles during the dehumidifying and heating operation. Since the mean occupancy rate in a vehicle is less than two people, it is required to optimize the performance of the DHP at low occupancy for an effective operation. The objective of this study is to investigate the performance improvement of a DHP by using the additional waste heat source in electric vehicles with low occupancy. The experiments on the DHP were conducted by varying operating modes, according to various numbers of passengers. Even though the air source DHP in an AL (alternating) mode showed 7.6\% lower heating capacity on average, compared to that in the DH (dehumidifying and heating) mode, the COP improvement of the air source DHP in the AL mode against the DH mode was approximately 31\% for one passenger. In addition, the dual source DHP in the AL mode showed 15.8\% higher heating capacity and 5.2\% higher COP on average, compared to the air source DHP in the AL mode.",

keywords = "Air source, Dehumidifying, Electric vehicle, Heat pump, Low occupancy, Waste heat source",

author = "Ahn, \{Jae Hwan\} and Lee, \{Joo Seong\} and Changhyun Baek and Yongchan Kim",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2016",

month = nov,

day = "15",

doi = "10.1016/j.energy.2016.08.104",

language = "English",

volume = "115",

pages = "67--75",

journal = "Energy",

issn = "0360-5442",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Performance improvement of a dehumidifying heat pump using an additional waste heat source in electric vehicles with low occupancy

AU - Ahn, Jae Hwan

AU - Lee, Joo Seong

AU - Baek, Changhyun

AU - Kim, Yongchan

PY - 2016/11/15

Y1 - 2016/11/15

N2 - A DHP (dehumidifying heat pump) has been proposed to save energy consumption in electric vehicles during the dehumidifying and heating operation. Since the mean occupancy rate in a vehicle is less than two people, it is required to optimize the performance of the DHP at low occupancy for an effective operation. The objective of this study is to investigate the performance improvement of a DHP by using the additional waste heat source in electric vehicles with low occupancy. The experiments on the DHP were conducted by varying operating modes, according to various numbers of passengers. Even though the air source DHP in an AL (alternating) mode showed 7.6% lower heating capacity on average, compared to that in the DH (dehumidifying and heating) mode, the COP improvement of the air source DHP in the AL mode against the DH mode was approximately 31% for one passenger. In addition, the dual source DHP in the AL mode showed 15.8% higher heating capacity and 5.2% higher COP on average, compared to the air source DHP in the AL mode.

AB - A DHP (dehumidifying heat pump) has been proposed to save energy consumption in electric vehicles during the dehumidifying and heating operation. Since the mean occupancy rate in a vehicle is less than two people, it is required to optimize the performance of the DHP at low occupancy for an effective operation. The objective of this study is to investigate the performance improvement of a DHP by using the additional waste heat source in electric vehicles with low occupancy. The experiments on the DHP were conducted by varying operating modes, according to various numbers of passengers. Even though the air source DHP in an AL (alternating) mode showed 7.6% lower heating capacity on average, compared to that in the DH (dehumidifying and heating) mode, the COP improvement of the air source DHP in the AL mode against the DH mode was approximately 31% for one passenger. In addition, the dual source DHP in the AL mode showed 15.8% higher heating capacity and 5.2% higher COP on average, compared to the air source DHP in the AL mode.

KW - Air source

KW - Dehumidifying

KW - Electric vehicle

KW - Heat pump

KW - Low occupancy

KW - Waste heat source

UR - https://www.scopus.com/pages/publications/84986564799

U2 - 10.1016/j.energy.2016.08.104

DO - 10.1016/j.energy.2016.08.104

M3 - Article

AN - SCOPUS:84986564799

SN - 0360-5442

VL - 115

SP - 67

EP - 75

JO - Energy

JF - Energy

ER -

Performance improvement of a dehumidifying heat pump using an additional waste heat source in electric vehicles with low occupancy

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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