Waste heat

Alphabet Energy Matt Scullin is the PhD student in UC Berkeley and he has high interests in thermoelectric technology. In his academic career, he found that the traditional way of power generating wastes about 60% energy. While with the thermoelectric technology people can generate electricity from wasted heat and it can improve efficiency in 10% to 25%. By using his own technology, Matt started a company called alphabet energy and producing superior thermoelectric device. He narrowed his targets to four industries: automotive, aerospace, power generation and manufacturing. Automotive industry is the area that the team most passionate about. Typical motor engine converts only 30% energy into propulsion. Thermoelectric generator could potentially use for improve vehicle fuel economy by converting engine generated heat to electricity, a thermoelectric system connected to engine exhaust could make cars 10% more fuel efficient. The market of automotive industry is large. There are growing automobile market internationally and domestically, but the…

This poses a problem for life, since organisms rely on these energy conversions and transfers to subsist in an environment with finite energy resources. Inefficiency is insignificant for small, single-celled organisms since they use a minuscule amount of energy resources, but as life forms have begun to evolve into large, heterotrophic, and complex organisms, their levels of energy waste created by inefficiency has added up. In actions, such as movement and metabolism, which are necessary for…

damp hair, or require product on dry hair, the Vixen uses hot air to heat the ceramic barrel. This creates a combination of hot air brush and curling iron that can be used on dry or damp hair. Instead of spending over an hour sectioning, blow drying, and curling your hair, you can achieve a beautiful blowout look with curls and waves with one piece of equipment. It leaves you with more time in the morning to sleep in since you won't have to spend an hour doing your hair. When it comes to a…

1. The hypothalamus is the processing centre that controls the body temperature in the brain, through temperature receptors the skin is able to realize changes to external temperatures which send the information to the brain (hypothalamus). There are also temperature receptors that identify the temperature changes in the blood. The Processing centre triggers for the effectors (these are the sweat glands and muscles) to adapt in order the make sure our body temperature stays at 37°C. If we…

to keep water for a long time in the hot weather. The prices of replacing the cellulose pads every summer will cost approximately $5.000 for each house in the farm, and if the farm has 8 houses, the cost will be about $ 40.000 each summer. The researchers made pads from the date palm; they used a new material from agricultural waste. The date palm pad is more effective, and has the ability to reduce the temperature more than other materials because the structure has the ability to keep the water…

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…

by heat gains and losses, the body uses sweat and evaporation of sweat to cool the body (Ridley & Channing, 1999). Loss of water through sweat is carried out by eccrine sweat glands which are evenly distributed over most of the body surface (Popkin, D’Anci & Rosenberg, 2010). Hydration…

The size of the ac doesn't matters; rather it's the capacity that needs to be checked beforehand. An oversized air-conditioner is less effective and less energy efficient. Therefore, pick the right size of air conditioner for your room. For example; if the room size is up-to 120 Sq feet, then the capacity required will be 0.75 ton. Similarly, if the room size is 121-150 Sq feet, then the capacity required will be up-to 1 ton and so on. A reputable HVAC contractor will conduct a proper heat/loss…

As we know that, on earth, the major part of water is saltwater so desalination systems have become a practical means of increasing freshwater supplies. Desalination is mostly useful in locations that lack necessary groundwater or rainfall but it can also supplement existing resources. There are some drawbacks of desalination. The marine ecosystem can get damaged as the highly concentrated brine that is ejected to the ocean. One way to lessen this threat is to dilute the brine with a waste water…

Energy Thermodynamics is, the everything that happens due to the flowing of the heat from a hot locale to a cold locale, and nothing occurs without the flow of the heat. Additionally, thermodynamics is an exact science. Thermodynamic system is defined by volume, pressure, temperature and chemical make-up. When conditions change the thermodynamic system will respond by changing its temperature, volume, pressure, or chemical make-up and will adjust accordingly in order to reach its original…