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Title: Improving the energy efficiency of room air conditioners in China: Costs and benefits

Abstract

China is the world's largest consumer of room air conditioners, and it contributes about a quarter of global space cooling CO2 emissions. We model the costs and benefits of recently proposed new room air conditioner minimum energy performance standards (MEPS) in China. Our results suggest that newly proposed MEPS brings accumulative CO2 emissions reductions of 12.8% between 2019 and 2050, and accumulative bill saving of 2620 billion RMB to China's consumers. The benefits of the proposed MEPS decrease with longer MEPS revision intervals and increase with shorter intervals—indicating that the intervals should be balanced to maximize benefits while accommodating constraints due to air conditioner manufacturer design cycles. We also model potential nationwide benefits from higher MEPS. Across two increasingly aggressive MEPS scenarios, China's room air conditioner electricity consumption and CO2 emissions in 2050 are both reduced by 15–53% compared to the proposed MEPS. The highest-efficiency scenario (reaching MEPS of annual performance factor 5.4 in 2025) provides the largest long-term national benefits. These results could inform development of a Chinese regulatory regime that effectively updates room air conditioner MEPS. Because China is the world's largest manufacturer of room air conditioners, the economic, energy, and emissions benefits resulting from higher Chinese MEPSmore » could also have a global reach.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1603599
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Applied Energy
Additional Journal Information:
Journal Volume: 258; Journal Issue: C; Journal ID: ISSN 0306-2619
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; China; room air conditioners; efficiency improvement; minimum energy performance standards; energy savings; CO2 emissions reduction

Citation Formats

Karali, Nihan, Shah, Nihar, Park, Won Young, Khanna, Nina, Ding, Chao, Lin, Jiang, and Zhou, Nan. Improving the energy efficiency of room air conditioners in China: Costs and benefits. United States: N. p., 2019. Web. https://doi.org/10.1016/j.apenergy.2019.114023.
Karali, Nihan, Shah, Nihar, Park, Won Young, Khanna, Nina, Ding, Chao, Lin, Jiang, & Zhou, Nan. Improving the energy efficiency of room air conditioners in China: Costs and benefits. United States. https://doi.org/10.1016/j.apenergy.2019.114023
Karali, Nihan, Shah, Nihar, Park, Won Young, Khanna, Nina, Ding, Chao, Lin, Jiang, and Zhou, Nan. Fri . "Improving the energy efficiency of room air conditioners in China: Costs and benefits". United States. https://doi.org/10.1016/j.apenergy.2019.114023. https://www.osti.gov/servlets/purl/1603599.
@article{osti_1603599,
title = {Improving the energy efficiency of room air conditioners in China: Costs and benefits},
author = {Karali, Nihan and Shah, Nihar and Park, Won Young and Khanna, Nina and Ding, Chao and Lin, Jiang and Zhou, Nan},
abstractNote = {China is the world's largest consumer of room air conditioners, and it contributes about a quarter of global space cooling CO2 emissions. We model the costs and benefits of recently proposed new room air conditioner minimum energy performance standards (MEPS) in China. Our results suggest that newly proposed MEPS brings accumulative CO2 emissions reductions of 12.8% between 2019 and 2050, and accumulative bill saving of 2620 billion RMB to China's consumers. The benefits of the proposed MEPS decrease with longer MEPS revision intervals and increase with shorter intervals—indicating that the intervals should be balanced to maximize benefits while accommodating constraints due to air conditioner manufacturer design cycles. We also model potential nationwide benefits from higher MEPS. Across two increasingly aggressive MEPS scenarios, China's room air conditioner electricity consumption and CO2 emissions in 2050 are both reduced by 15–53% compared to the proposed MEPS. The highest-efficiency scenario (reaching MEPS of annual performance factor 5.4 in 2025) provides the largest long-term national benefits. These results could inform development of a Chinese regulatory regime that effectively updates room air conditioner MEPS. Because China is the world's largest manufacturer of room air conditioners, the economic, energy, and emissions benefits resulting from higher Chinese MEPS could also have a global reach.},
doi = {10.1016/j.apenergy.2019.114023},
journal = {Applied Energy},
number = C,
volume = 258,
place = {United States},
year = {2019},
month = {11}
}

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