Watt Watchers of Texas: Texas is Too Good To Waste™

Cooling and Heating Activities

Overall, the built environment around us is responsible for more energy consumption than any other sector, but consumption is much more than lighting and computers. A very significant portion of energy consumption is hidden in the form of cooling and heating the spaces we call home, work, or school. Cooling and heating requirements vary by region and even vary greatly within the state of Texas. However, one of the ways to reduce overall energy consumption is maintaining best practices for cooling and heating efficiency.
History of Air Conditioning

Humans have been seeking comfort since before recorded history. From the very earliest human dwellings to the mastery of fire, so many technologies are about keeping warm and cool. The advent of air conditioning is only the last line in a long story about humans taking control of their built environment.

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Comparing International Solar Capacity

Natural resources are not evenly distributed around the world. Geographic features, latitude, and time of year all affect the solar capacity of a region. Different organizations including the National Renewable Energy Laboratory and the World Bank Group have created an atlas of solar resource data, which anchors this activity.

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Plan Your Programmable Thermostat

The U.S. Department of Energy estimates that individual homes can achieve a 10% reduction in heating and cooling costs by leveraging the power of the programmable thermostat to change the set temperature by 7°F to 10°F for 8 hours a day.¹ Working as a group or a class, use students' preferences on comfort and what they know about weather and temperature trends to create a schedule for a programmable thermostat.

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International Regulations for Refrigeration and the Environment

Most of the activities and explorations within the Watt Watchers of Texas portfolio look at individual actions focused on conservation and sustainable decision-making. This activity looks at some examples of international law, treaties, and regulation that affect refrigeration and air conditioning all around the world.

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Refrigerants and Texas

Air conditioning depends on a pressurized system of fluid repeatedly evaporating and condensing within a closed system in order to absorb heat from the air inside your space. In the past, air conditioners used water, ammonia, or carbon dioxide. However, in order to adapt to higher demand for indoor cooling, companies turned to different chemical compounds and synthetic fluids in order to achieve better cooling efficiency.

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Relative Humidity

Temperature is the weather metric most obviously associated with human comfort, but humidity is the real key. Humidity is the amount of moisture in the form of water vapor in the air all around us, and it really affects how we feel in the weather. Meteorologists use the term relative humidity, which refers to the ratio of water vapor actually in the air compared to how much water vapor air can hold.

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