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Vegas! So dry, so nice. Or is it?

Las Vegas, Nevada, the city of fun, gambling, good food and many, many wonderful shops inside glittering hotels! I spent there a few days there for the 2017 ASHRAE Winter Conference at the end of January, and indeed I enjoyed it. The seminars and conferences were very helpful and instructive. The weather was great, with the sun shining, blue skies and temperatures around 18 °C / 64 °F;...
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What was the HVAC/R sector talking about in Madrid?

Two weeks ago I was lucky to attend the Climatización y Refrigeración show in Madrid. It was exciting to once again see how our HVAC/R sector is not only thriving, but extremely active in the development of new solutions that the market is demanding. As predicted, this time the trends are mostly being driven by standards and regulations, specifically F-gas and Ecodesign in...
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Pros and Cons of Hydrocarbons as Refrigerants

Brief history of CFCs, HCFCs, HFCs, HFOs and natural refrigerants The damage caused by chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) to the ozone layer led to the establishment of the Montreal Protocol on Substances that Deplete the Ozone Layer. Enforced on 26 August 1989 and ratified by 197 countries, it replaced CFCs and HCFCs with other substances that have no...
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The materials used in artworks and their reactions to fluctuations in relative humidity

As seen in our post Artworks sensitivity to relative humidity , the characteristics of materials used to make artworks change according to the relative humidity of the surrounding air. In this post we will describe the impact of variations in humidity on the appearance and structure of such materials. Wood It is well known that wood has a significant moisture content , both...
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Will the new US government contribute to making the planet green again?

There is no doubt that around the world may people are wondering how the new United States government will act regarding a number of issues. Indeed, the environment is one area where there is a great deal of suspense , following the famous tweet by the new President " The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive " . ...
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Humidity Control + Energy Saving: is there a solution?

Humidity control in data centers has always been considered necessary in terms of preventing electric discharges . The use of traditional technology based on heating water to boiling point (isothermal humidifiers) is however costly in terms of energy consumption, while also requiring increased cooling capacity. Over time these factors have led to a debate over the need to control...
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One more step towards a “greener” planet

Unfortunately, problems are not always easily solved. This also happens with the “battle” between Mother Earth and refrigerants. At the same time as countries agreed to avoid increasing the hole in the ozone layer and the first positive results started to become evident, the Earth’s temperature continued to rise , and climate scientists were wondering why. The answer came after years of...
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Artworks sensitivity to relative humidity

The characteristics of materials used to make works of art change based on relative humidity. In particular, their moisture content tends to reach equilibrium with the humidity in the surrounding air. Fluctuations in relative humidity cause objects to change size , either expanding or contracting, resulting in deformations and even, over time, breakage . Materials that have these...
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It seems like we are doing something useful for the future of our planet!

Can you imagine all the countries in the world successfully agreeing on one topic and establishing a protocol ? This is something like what happened almost 30 years ago, in Montreal . A group of scientists decided to phase out the production of ozone-depleting substances, such as CFC and HCFC refrigerants , with the aim of protecting the ozone layer . The result so far: the hole in...
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What's refrigeration?

Both industrial refrigeration and air-conditioning are based on the same mechanism: a fluid, generally water or air, is cooled by evaporation of another fluid, called the refrigerant . The refrigerant circuit, comprising the compressor, evaporator, condenser and expansion device, is an integral part of both systems. Nonetheless, there are substantial differences between refrigeration and...
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What's air-conditioning?

  Air-conditioning is that process used to create and maintain certain temperature, relative humidity and air purity conditions in indoor spaces. This process is typically applied to maintain a level of personal comfort. It's also used in industrial applications to ensure correct operation of equipment or machinery that need to operate in specific environmental conditions or...
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