This page either does not exist or is currently unavailable.You can also search for something on our site below.For modern living with the central heating turned up and efficient double glazing preventing cold draughts are helping to send obesity rates soaring, a new study claims. Britons are getting so used to being warm and cosy in their homes that their bodies no longer have to use up as much energy to ward off the cold leading to weight gain. It is a growing problem across the developed world where average indoor temperatures are constantly rising, said the study by scientists from London university UCL. The added time spent indoors, whether working from home or shopping online instead of going out, is only adding to the obesity problem. Even if they do go out it is often into heated cars or other transport to offices and workplaces where the temperature is carefully governed by air conditioning units. The research, published in the journal Obesity Reviews, said there was a direct link between "reduced exposure to seasonal cold and increases in obesity in the UK and US".

If the body is warm it does not need to produce its own energy to do so and may also lose some of its ability to produce heat as a result, said the study. When the body is cold it produces brown fat known as adipose tissue which burns energy to create heat, it said. what size ac unit do i need for 1600But homes in developed countries have been getting gradually warmer over the years through more efficient heating or people expecting a greater level of comfort in their living rooms and so turning the thermostat up. floor mounted ac unitAnd spending greater periods of time in these warmer environments could see the body losing its ability to create brown adipose tissue, said UCL lead author Dr Fiona Johnson. through the wall air conditioning units reviews

She said: "Increased time spent indoors, widespread access to central heating and air conditioning, and increased expectations of thermal comfort all contribute to restricting the range of temperatures we experience in daily life. "This reduces the time our bodies spend under mild thermal stress – meaning we're burning less energy. "This could have an impact on energy balance and ultimately have an impact on body weight and obesity." She called for health strategies should look at heating just as they currently look at other environmental factors such as diet and exercise. The co-author, Marcella Ucci, added: "The findings suggest that lower winter temperatures in buildings might contribute to tackling obesity as well reducing carbon emissions." The research found that average living room temperatures have inched up around half a degree centigrade (one degree Fahrenheit) every decade and now average more than 20C (68F). The body starts to heat itself if it drops below the "thermoneutral zone" which is around 25C (77F).

A four centigrade rise in temperature reduces the amount of energy used to heat the body by as much as 800 calories.A Dictionary of Units of Measurement Rowlett and the University of North Carolina at Chapel Return to the Dictionary Contents Skip to: A B All material in this folder is copyright © 2004 by Russ Rowlett and the University of North Carolina at Chapel Hill. Permission is granted for personal use and for use by individual teachers in conducting their own classes. All other rights reserved. You are welcome to make links to this page, but please do not copy the contents of any page in this folder to another site. at this site will be updated from time to time.Shop Window AC Units Window Air Conditioners are the best way to stay cool during summer. Plus, window air conditioner units are the perfect option for apartments and homes without central air. They are quite handy in certain areas of the country that only need them for a short time each year.

Window air conditioners can be installed when temperatures outside rise, and easily removed once weather cools off. When choosing the right window AC units, it's necessary to focus on how large the rooms being cooled are. Larger rooms typically need a unit that offers a higher amount of BTU's, whereas smaller rooms require less. Also, the best window AC units double as heaters. Abt offers a wide variety of window AC units from top brands like Frigidaire and GE. For more information on choosing the correct window air conditioner for your home, check out our Air Conditioner Buying Guide. We also encourage you to contact one of our air conditioner specialists at 888-228-5800 to ensure electrical requirement compatibility. Abt carries Window Air Conditioners to help keep you cool throughout those hot summer months! It is a common misconception that window air conditioner units are weak or even an under-powered replacement for central air. While no single window air conditioner can match the power of a central air conditioner, the truth is that they come in a variety of sizes as well as price points.

At the low end, the most inexpensive window AC unit will only have the power to cool a dorm room or small bedroom. However, as the power increases, the best window air conditioners will be able to comfortably cool large rooms or even multiple rooms.Here is a timeline of historical facts about the development of the air-conditioning industry you may find interesting and help you appreciate the impact this important industry has on our lives: 1881 - When President James Garfield was dying, naval engineers constructed a box-like structure containing clothes saturated with melted ice water, where a fan blew outside air through this box andThe contraption was able to lower the room temperature by 20 degrees Fahrenheit and consumed half a million pounds of ice in 1882 - Thanks to Thomas Edison the first electric power plant opens in New York making it possible for the first time to have an inexpensive source of energy for residential and commercial

1902 - Willis Carrier builds the first air conditioner to combat humidity inside a printing company. 1906 - Willis Carrier patents his invention calling it an "Apparatus for Treating Air." 1906 - Stuart W. Cramer coins the term "Air Conditioning." 1914 - Carrier installs air conditioning in the first home, a 1922 - The first air conditioned movie theatre opens in Los Angeles (Grauman's Metropolitan Theatre). 1928 - The Chamber of the U.S. House of Representatives 1929 - The Senate becomes air conditioned. 1930 - The White House, the Executive Office Building, the Department of Commerce become air-conditioned. 1930 - Railroad diner cars on the Washington-New York route are 1940 - Packard is the first car with 'factory air' as an option 1946 - After World War II, the demand for room air-conditioners began to increase. air-conditioners were produced that year. 1953 - Room air conditioner sales exceed one million units

with demand still exceeding supply. 1953 - The Air-Conditioning and Refrigeration Institute (A.R.I.) is formed from two associations: the Refrigeration Equipment Manufacturers Association and the Air-Conditioning and Refrigerating 1957 - The first rotary compressor was introduced, permitting units to be smaller, quieter, weigh less, and more efficient than the reciprocating type. 1969 - Neil Armstrong and Buzz Aldrin walk on the moon in space suits with life support and cooling  systems. 1977 - New technology allowed heat pumps to be operated at lower outdoor temperatures while heating on the reversed refrigeration 1987 - The United Nations Montreal Protocol for protection of the earth's ozone layer is signed. international cooperation on the phaseout of stratospheric ozone depleting substances, including chlorofluorocarbon (CFC) refrigerants. 1990 - ARI, in conjunction with the U.S. Department of Energy, initiates the Materials Compatibility Lubricants Research

(MCLR) program, which helped manufacturers to accelerate away from CFC 1992 - The R-22 Alternative Refrigeration EvaluationThis four year program investigated alternatives to HCFC-22 (the refrigerant used in more than half the air-conditioning and refrigeration equipment in the U.S.) 1995 - CFC production in the United States ended December 1998 - Research for the 21st Century, a multi-year, million dollar research program for air-conditioning and refrigerationThe objective is to decrease building energy usage while improving indoor air quality. 2002 - Shipments of central air conditioners and air source heat pumps hit a record with 6,746,326 units shipped. 2003 - ARI celebrates 50 years of industry excellence. 2004 - The U.S. Department of Energy has announced that it will enforce a 13 SEER (Seasonal Energy Efficiency Ratio) minimum standard for residential central air conditioners startingIt increases by 30 percent the minimum 10 SEER