Energy-Efficient Centralized Air-Conditioning Systems


Energy-Efficient Centralized Air-Conditioning Systems

08 September 2021

Studies show that transmission of viruses, such as the coronavirus causing COVID-19, can be prompted by airconditioned ventilation. In developing member countries (DMC), the risks of virus transmission are higher because of poor hygiene including the use of old air-conditioning equipment, lack of regular maintenance, and overcrowding in closed spaces. Additionally, inefficient centralized air-conditioning (CAC) systems in many DMCs account for up to 50% of energy consumption in public buildings. Advanced air-conditioning systems with energy-saving technologies used in combination with demand-side management techniques could bring up to 45% energy savings. CACs also rely heavily on hydrofluorocarbons (HFCs), a greenhouse gas potentially thousands of times more potent than carbon dioxide. Proper management of HFCs is critical to addressing greenhouse gas emissions from CAC systems.

The Asian Development Bank (ADB) is implementing knowledge and support technical assistance (TA), Regional Support to Build Disease Resilient and Energy Efficient Centralized Air-conditioning Systems, to promote disease resilient clean energy development in developing member countries of ADB. The TA supports DMCs of ADB to September 6, 2021, improve energy efficiency, mitigate the risks of virus transmission, and ensure safe working conditions in public buildings by deploying efficient, clean, and smart CAC systems.



The webinar aimed to explore the energy efficiency and virus transmission risks of CAC systems and the operation of smart, energy-efficient, and disease-resilient CAC systems in selected DMCs in order to identify innovatively centralized air-conditioning systems using digital technologies and to develop awareness on energy conservation and containing indoor virus transmission in typical public buildings located at DMCs.This webinar series aims to increase awareness of disease-resilience, energy-efficient, and smart CAC in DMCs.

Program and Learning Materials: 
Date Session / Activity Presentation Material Speaker(s)
08 Sep 2021 Expert Address 1: Overview of Energy Efficient Centralized Airconditioning Systems
This presentation gives an overview on strategies for improving building energy efficiency.
Yanping Zhou
08 Sep 2021 Expert Address 2: Emerging HVAC technologies for energy efficient healthy buildings in hot and humid climates
This presentation gives an overview on the process of making energy efficient healthy buildings.
Chandra Sekhar
08 Sep 2021 Expert Address 3: Alternative Cooling and Heating Technologies
This presentation gives an overview on alternative cooling and heating district energy systems.
Alaa Olama
08 Sep 2021 Expert Address 4: Energy-efficient Centralized Air Conditioning System
This presentation gives an overview on the best design practices for energy efficient CAC systems.
C Subramaniam


The views expressed on this website are those of the authors and do not necessarily reflect the views and policies of the Asian Development Bank (ADB) or its Board of Governors or the governments they represent. ADB does not guarantee the accuracy of the data included in this publication and accepts no responsibility for any consequence of their use. By making any designation of or reference to a particular territory or geographic area, or by using the term “country” in this document, ADB does not intend to make any judgments as to the legal or other status of any territory or area.