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Refrigeration without Greenhouse Gases

Written by , on May 17, 2019

A team of scientists, led by the Chinese Academy of Sciences have discovered that crystals of a plastic, called neopentyl glycol, have the potential to replace harmful greenhouse gas refrigerants in refrigerators, air conditioners, computer cooling systems and the like.  Read more »

Air Conditioning without Electricity

Written by , on January 30, 2019

SoundEnergy, a Dutch company, has demonstrated a thermal acoustic engine which takes heat from any source and produces a powerful cooling effect without requiring power from any other source – potentially providing air conditioning or refrigeration from industrial waste heat or solar energy. The device combines two technologies which have been understood for a long […]  Read more »

Roof Panels That Make Air-Conditioning Much More Efficient

Written by , on September 13, 2017

Researchers at Stanford University have developed a fluid-filled roof panel which can make air-conditioning significantly more efficient.  Read more »

New Material Can Cool Buildings, Day and Night, with No Energy Consumption

Written by , on February 10, 2017

Engineers at the University of Colorado Boulder has developed a metamaterial – an engineered material not found in nature – which has the ability to cool objects even under direct sunlight with zero energy and water consumption.  Read more »

Australian Engineer Develops Solar Air Conditioner

Written by , on August 31, 2012

Paolo Corrada, a PhD student at the Queensland University of Technology, is developing a solar cooling and heating system for the home that will run independently of the electricity grid and generate domestic hot water as a by-product. The system is based on an absorption chiller which is a well-proven, efficient technology. The absorption chiller […]  Read more »

Energy Efficiency at Google’s Data Centres

Written by , on July 11, 2012

Google says that its data centres use half the energy of a typical data centre. This is achieved through simple energy saving methods including siting of the data centre, efficient temperature management and reductions in residual energy loss.  Read more »

Greener Air Conditioning

Written by , on June 26, 2009

A Hamburg-based company, Thermodyna, has developed an air-conditioning system that uses only the sun’s heat to produce hot or cool air as required. The core of the system is a Schukey motor. For cooling, a solar panel uses the sun’s heat to produce steam which is converted into mechanical energy. This drives a pump which […]  Read more »

Using Solar Heat for Cooling

Written by , on February 4, 2009

Scientists at the CSIRO’s solar cooling research project have developed a method of using solar thermal collectors, such as are used in solar hot water systems, to generate cooling for building air-conditioning. Dr Stephen White, the project leader, says that “The solar cooling technology we are developing directly uses the natural heat from the sun […]  Read more »

Google & Intel Suggest Raising Data Centre Temperatures

Written by , on October 16, 2008

Most data centres operate at temperatures between 20 and 22°C – some keep temperatures as low as 13°C. But according to large data centre operators, including Google, much higher temperatures with big savings in air conditioning, are acceptable. “The guidance we give to data centre operators is to raise the thermostat,” said Erik Teetzel, an Energy […]  Read more »