Thermodynamic system

His company assigned Plunkett to research and work on synthesizing various new forms of refrigerants, like ammonia and sulfur dioxide. Ammonia (NH3) is one of the most commonly produced industrial chemicals in the United States. It is used in industry and commerce, and also exists naturally in humans and in the environment. The problem is that during that time ammonia was used in most refrigerators, and it was toxic and many food-industry workers died. His team worked very hard and researched…

When we think of Summer, often we are concerned with how to keep ourselves and our pets cool. The blistering heat and fierce humidity in the Midwest are prevalent weather trends and make it difficult to reside outside. Our community warns us to stay hydrated, wear sunscreen and a hat and stay out of the sun when the heat is at its peak. When it comes to our pets, we are told to put out extra bowls of water for Fluffy and Fido and provide them with shelter and shade. In the heat of the…

Although not as immediately critical as the availability of oxygen and glucose, it is important for the nervous system of ectothermic humans to maintain normothermia for effective cellular functioning (Morrison, 2011). The principle source of heat originates from the body. Temperature control mechanisms in humans consist of both core and peripheral processes. Responses elicited occur in a feed-forward manner. Changes in thermoreceptors in primary sensory nerve endings distributed to the skin are…

1. What factors should be considered to provide maximal protection when people are exercising in the cold? To avoid excessive heat loss, our bodies use peripheral vasoconstriction, nonshivering thermogenesis, and shivering, which is usually not enough. Peripheral vasoconstriction We must also rely on behavioral responses like huddling behavior and putting on more clothing to help insulate our deep body tissues from the environment. During aerobic exercise, clothing insulation and exercise…

The article, Aging Aquifers by Valerie King states the importance of dating groundwater. King begins by stating dating aquifers can predict 50 years down the road. It is important to date groundwater to know the accessibility of water for future use. Dennehy states, “In very old groundwater, when you’re extracting water you should realize that water took a long time to get into that location, so it would take a long time to replace that water” (King 11). Dating aquifers is done by testing the…

Figure 3 illustrates the original site plan of Nobbys lighthouse area, which includes a lighthouse building are located on the Nobbys island in the Newcastle East Heritage Conservation Area, which comprises the lighthouse, the light station, three associated cottages and the surrounding facilities such as the fencing, sheds and garages. All the buildings are stood on the Nobbys island with the elevation of 25 meters. The 0.23 m (9-inch) brickwork buttressed parapet define the perimeter and…

Temperature is the measure of hotness expressed in terms of various arbitrary scales such as Fahrenheit, Celsius, and Kelvin. The Fahrenheit scale sets 32° as the freezing temperature for water and it assigns 212° the boiling point for water (What is Temperature, 2015) At the temperature of Absolute Zero there is no motion and no heat. Absolute Zero will occur when every atomic and molecular movement ceases and is at the lowest temperature possible. Absolute Zero on the scale is 0 degrees…

Results: Table: Mass of alcohols combusted along with experimental and literary values for enthalpy change Alcohol Molar Mass (g/mol) Mass of Alcohol Combusted (g) Enthalpy (kJ/mol) Enthalpy literature value [Stretton n.d.] (kJ/mol) Trial 1 Trial 2 Trial 3 Average (mean) Trial 1 Trial 2 Trial 3 Average (mean) Ethanol 46.07 1.447 1.327 1.371 1.382 -133.1 -145.1 -140.5 -139.3 -1367 Propanol 60.10 1.133 1.375 1.255 1.254 -221.7 -182.7 -200.2 -200.3 -2021 Butanol 74.12 1.181 1.046 1.119 1.115…

heat is on the exterior of your home, insulation blocks it from coming inside(p 5). As the insulation blocks it from coming in, your cooling system will spread throughout the interior of the house without a hint of hot air. Basically, the article is saying that the insulation also still acts like a blockade, but from exterior heat in the summertime. Cooling systems take a huge part in cooling your home. Without it, the insulation will not be able to block the heat for long. The article also…

Energy performance of the original house is not terribly bad but not satisfied, either. It wastes a huge amount of energy in cooling the living area. Strategies of achieving better passive heating and cooling will be illustrated as following. Reducing cooling energy consumption will be emphasized in designing the new house. The original orientation (315 degrees with living room faces south-west) resulted in excessive heat gain during summer, especially in the afternoon, and insufficient heat…