Summary
After analyzing the energy efficiency of existing air conditioning systems, the main issues concerning the low efficiency of air conditioning system are analyzed, including one kind of cooling/heating source used, unnecessary resistance of components in the air handling unit and that for air delivery, mixing of fresh air and return air, not fully utilizing natural energy and waste heat, etc. To solve these important issues, the concept of grade of air conditioning load (i.e., the reasonable medium temperature to treat air), the influence of different terminals and air distribution on the quantity and grade of air conditioning load, how to construct the air handling process with multiple stages to match the grade of air conditioning load and energy, and the ideal energy efficiency of air conditioning system which generates proper grade of energy and fully utilize natural and waste energy are introduced. Finally, the energy consumptions between the existing air conditioning system and the ideal air conditioning system are compared, and the energy efficiency loss of the existing air conditioning system is analyzed. It shows that the energy consumption of an existing air conditioning system can be decreased by 59% after eliminating the efficiency losses. The lecture can provide important guidance on the development of energy-efficient air conditioning systems in different countries.
Available documents
Format PDF
Pages: 13 p.
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Can we further improve the energy efficiency of air conditioning system significantly ?
- Record ID : 30031496
- Languages: English
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Publication date: 2023/08/21
- DOI: http://dx.doi.org/10.18462/iir.icr.2023.1157
Links
See other articles from the proceedings (373)
See the conference proceedings
Indexing
-
Research on the optimal radius of a district co...
- Author(s) : ZHANG S., YANG J., LONG W.
- Date : 2008/04
- Languages : Chinese
- Source: HV & AC - vol. 38 - n. 210
- Formats : PDF
View record
-
Improving energy efficiency in existing buildings.
- Author(s) : HOLNESS G. V. R.
- Date : 2008/01
- Languages : English
- Source: ASHRAE Journal - vol. 50 - n. 1
View record
-
How to improve energy efficiency of fans for ai...
- Author(s) : BRELIH N.
- Date : 2012/02
- Languages : English
- Source: REHVA Journal - vol. 49 - n. 2
View record
-
Displacement efficiency takes centre stage.
- Author(s) : MCGOWAN S.
- Date : 2008/02
- Languages : English
- Source: EcoLibrium - vol. 7 - n. 1
View record
-
An energy saving control strategy for VRF and V...
- Author(s) : ZHU Y. H., JIN X. Q., DU Z. M., et al.
- Date : 2014/07/14
- Languages : English
- Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
View record