Electricity end-use characteristics of air-cooled chillers in hotels in Hong Kong

F. W. Yu; K. T. Chan

doi:10.1016/j.buildenv.2004.05.009

Electricity end-use characteristics of air-cooled chillers in hotels in Hong Kong

F. W. Yu
, K. T. Chan

Division of Science, Engineering and Health Studies (SEHS)

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

28 Citations (Scopus)

Abstract

This paper presents the operating efficiency of air-cooled chillers in three existing hotels and investigates the extent to which the annual electricity consumption can decrease by improving their efficiency. Chillers in these hotels tend to be improperly staged, causing their seasonal efficiency to rise by 0.05-0.12 kW/kW from a full load efficiency of 0.32 kW/kW. When chiller sequencing is restored, their seasonal efficiency could be enhanced to 0.34 kW/kW, which corresponds to an 8.8-22.7% drop in their annual electricity consumption. It is possible to further decrease the annual electricity consumption by 27.0-38.6% when the chillers operate under floating condensing temperature control instead of head pressure control. The implications of improved chiller efficiency for reducing the electricity demand of hotels are discussed.

Original language	English
Pages (from-to)	143-151
Number of pages	9
Journal	Building and Environment
Volume	40
Issue number	1
DOIs	https://doi.org/10.1016/j.buildenv.2004.05.009
Publication status	Published - Jan 2005

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Air-cooled chillers
Electricity consumption
Hotels
Operating efficiency

Access to Document

10.1016/j.buildenv.2004.05.009

Cite this

@article{6a1eee33be5049e1967c37071cb05e92,

title = "Electricity end-use characteristics of air-cooled chillers in hotels in Hong Kong",

abstract = "This paper presents the operating efficiency of air-cooled chillers in three existing hotels and investigates the extent to which the annual electricity consumption can decrease by improving their efficiency. Chillers in these hotels tend to be improperly staged, causing their seasonal efficiency to rise by 0.05-0.12 kW/kW from a full load efficiency of 0.32 kW/kW. When chiller sequencing is restored, their seasonal efficiency could be enhanced to 0.34 kW/kW, which corresponds to an 8.8-22.7\% drop in their annual electricity consumption. It is possible to further decrease the annual electricity consumption by 27.0-38.6\% when the chillers operate under floating condensing temperature control instead of head pressure control. The implications of improved chiller efficiency for reducing the electricity demand of hotels are discussed.",

keywords = "Air-cooled chillers, Electricity consumption, Hotels, Operating efficiency",

author = "Yu, \{F. W.\} and Chan, \{K. T.\}",

note = "Funding Information: The work described in this paper was supported by a grant from the Research Grants Council of the Hong Kong SAR, China (Project No. PolyU 5018/00E) and the central research grant of the Hong Kong Polytechnic University.",

year = "2005",

month = jan,

doi = "10.1016/j.buildenv.2004.05.009",

language = "English",

volume = "40",

pages = "143--151",

journal = "Building and Environment",

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TY - JOUR

T1 - Electricity end-use characteristics of air-cooled chillers in hotels in Hong Kong

AU - Yu, F. W.

AU - Chan, K. T.

N1 - Funding Information: The work described in this paper was supported by a grant from the Research Grants Council of the Hong Kong SAR, China (Project No. PolyU 5018/00E) and the central research grant of the Hong Kong Polytechnic University.

PY - 2005/1

Y1 - 2005/1

N2 - This paper presents the operating efficiency of air-cooled chillers in three existing hotels and investigates the extent to which the annual electricity consumption can decrease by improving their efficiency. Chillers in these hotels tend to be improperly staged, causing their seasonal efficiency to rise by 0.05-0.12 kW/kW from a full load efficiency of 0.32 kW/kW. When chiller sequencing is restored, their seasonal efficiency could be enhanced to 0.34 kW/kW, which corresponds to an 8.8-22.7% drop in their annual electricity consumption. It is possible to further decrease the annual electricity consumption by 27.0-38.6% when the chillers operate under floating condensing temperature control instead of head pressure control. The implications of improved chiller efficiency for reducing the electricity demand of hotels are discussed.

AB - This paper presents the operating efficiency of air-cooled chillers in three existing hotels and investigates the extent to which the annual electricity consumption can decrease by improving their efficiency. Chillers in these hotels tend to be improperly staged, causing their seasonal efficiency to rise by 0.05-0.12 kW/kW from a full load efficiency of 0.32 kW/kW. When chiller sequencing is restored, their seasonal efficiency could be enhanced to 0.34 kW/kW, which corresponds to an 8.8-22.7% drop in their annual electricity consumption. It is possible to further decrease the annual electricity consumption by 27.0-38.6% when the chillers operate under floating condensing temperature control instead of head pressure control. The implications of improved chiller efficiency for reducing the electricity demand of hotels are discussed.

KW - Air-cooled chillers

KW - Electricity consumption

KW - Hotels

KW - Operating efficiency

UR - https://www.scopus.com/pages/publications/11144285862

U2 - 10.1016/j.buildenv.2004.05.009

DO - 10.1016/j.buildenv.2004.05.009

M3 - Article

AN - SCOPUS:11144285862

SN - 0360-1323

VL - 40

SP - 143

EP - 151

JO - Building and Environment

JF - Building and Environment

IS - 1

ER -

Electricity end-use characteristics of air-cooled chillers in hotels in Hong Kong

Abstract

UN SDGs

Keywords

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