30 May 2020 
11 March 2019

Researchers pioneer water-based air-conditioner

A team of researchers from the National University of Singapore (NUS) has pioneered a new water-based air-conditioning system that cools air to as low as 18 degrees Celsius without the use of energy-intensive compressors and environmentally harmful chemical refrigerants. This technology could potentially replace the century-old air-cooling principle that is still being used today.

Photo: National University of SingaporePhoto: National University of Singapore
The novel system developed by researchers at the National University of Singapore generates potable drinking water while it cools ambient air.
Suitable for both indoor and outdoor use, the novel system is portable and it can also be customised for all types of weather conditions. Led by Associate Professor Ernest Chua from the Department of Mechanical Engineering at NUS Faculty of Engineering, the team’s novel air-conditioning system is cost-effective to produce, and it is also more eco-friendly and sustainable.

The system consumes about 40 per cent less electricity than current compressor-based air-conditioners used in homes and commercial buildings. This translates into more than 40 per cent reduction in carbon emissions. In addition, it adopts a water-based cooling technology instead of using chemical refrigerants such as chlorofluorocarbon and hydrochlorofluorocarbon for cooling, thus making it safer and more environmentally-friendly. To add another feather to its eco-friendliness cap, the novel system generates potable drinking water while it cools ambient air.

Current air-conditioning systems require a large amount of energy to remove moisture and to cool the dehumidified air. By developing two systems to perform these two processes separately, the NUS Engineering team can better control each process and hence achieve greater energy efficiency.

The novel air-conditioning system first uses an innovative membrane technology – a paper-like material – to remove moisture from humid outdoor air. The dehumidified air is then cooled via a dew-point cooling system that uses water as the cooling medium instead of harmful chemical refrigerants. Unlike vapour compression air-conditioners, the novel system does not release hot air to the environment. Instead, a cool air stream that is comparatively less humid than environmental humidity is discharged – negating the effect of micro-climate. About 12 to 15 litres of potable drinking water can also be harvested after operating the air-conditioning system for a day.



More news about "ISH":

10 January 2019

The importance of air at ISH: good air quality pays off

The ground-breaking advances in the refrigeration, air-conditioning and ventilation technologies can be experienced first-hand at ISH, from 11 to 15 March 2019 in Frankfurt am Main. With over 2,400 exhibitions, ISH is the world’s largest show for the combination of water and energy. (more…)

3 January 2019

New study “Global Visitor Insights” published

According to a new Global Visitor Insights study, trade show visitors globally are reporting a stable overall satisfaction with the shows they attend – but at the same time, between 22 and 27 per cent of show visitors from mature markets feel that shows are "getting worse". (more…)

2 July 2018

Koelnmesse establishes subsidiary in Colombia

Koelnmesse is further expanding its presence on the Latin American market: With the establishment of the subsidiary Koelnmesse SAS in Colombia with headquarters in Bogotá, Koelnmesse is the first international trade fair organiser to be represented in this key Latin American trade fair market with its own subsidiary. (more…)

13 June 2018

Contract textile furnishing at Heimtextil 2019

Trends and innovations for contract textile furnishing are at the heart of the Interior.Architecture.Hospitality Expo – individual, sustainable, functional. At Heimtextil, 500 of some 3,000 exhibitors alone will target the contract sector in particular under the title Interior.Architecture.Hospitality. (more…)

2 May 2018

Messe Frankfurt establishes Digital Advisory Board

Messe Frankfurt has set up a Digital Advisory Board to oversee its digital activities. With this step, the company is seeking to engage with its customers more intensively regarding the digital transformation of marketing in the trade fair industry and the evolution that this entails for the trade fairs themselves. (more…)

26 March 2018

PCIM Asia 2018: conference program now published

The conference program for the PCIM Asia 2018 has been finalized. The conference with its parallel exhibition will take place from 26 to 28 June 2018 in Shanghai. For the first time this year, the conference will be integrated in the exhibition hall. (more…)

18 July 2017

ISH with a new layout in the Energy section

ISH, the world's leading trade fair for the combination of water and energy, is set to benefit from a new exhibition hall and a new layout in the Energy section. From ISH 2019, the heating industry will be located in Halls 11 and 12, where it will present the latest heating technologies, from efficient heat production to heat transfer. (more…)

30 June 2017

From Monday to Friday: ISH 2019 with a new sequence of days

ISH, the world's leading trade fair for the combination of water and energy, is changing its sequence of days. In future, the event will begin on Monday, instead of Tuesday, as in the past. The next ISH will be held from 11 to 15 March 2019. As in the past, the fair will be open to private visitors on the last day. (more…)

19 April 2017

PCIM Asia 2017: Conference program now published

The conference program of PCIM Asia 2017 in Shanghai (27 to 29 June 2017) has been finalized. At the communication platform for power electronics and their applications in Asia, experts from industry and academia will present their solutions and practical experiences. (more…)


16/06/2020 - 18/06/2020 in Zürich
23/06/2020 - 25/06/2020 in Paris
World Nuclear Exhibition
Leading event for the global nuclear community
14/09/2020 - 19/09/2020 in Chicago
Hannover Messe USA
22/09/2020 - 25/09/2020 in Hamburg
WindEnergy Hamburg
The global on- & offshore expo
13/10/2020 - 15/10/2020 in Nürnberg
International Exhibition Refrigeration, AC & Ventilation, Heat Pumps
17/11/2020 - 20/11/2020 in Hannover
International trade fair for innovative energy supply


Next date of the fair ISH: 22/03/2021 - 26/03/2021

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