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Why Air Standard Cycles are conceived?
Air standard cycles are conceived to permit thermodynamic calculations using the well-known and readily available thermodynamic properties of air. The results of such calculations may be used to predict compression ratio, specific heat ratio, and other operating parameters effects on thermal efficiency of a number of heat engines such as the Otto Cycle Heat Engine , the Diesel Cycle Heat Engine, and the Brayton Cycle Heat Engine.
What elements in a curcuit can change eletrcical energy into other forms of energy?
Resistance converts electrical energy into other forms of energy, such as light, heat sound, motion, and magnetic effects.
Is a heat pump and heat exchanger the same thing?
No they are not. In fact a heat pump contains within it a heat exchanger/coil. A heat pump is reverse refrigeration. A heat exchange, exchanges heart from a heat source to a conditioned space (the area you want heated). While a heat pump uses a heat exchanger to supply heat to the conditioned space. Reverse refrigeration uses the air conditioner in reverse(you know how heat comes if the back of yhe air conditioner, well when it's in reverse that heat is used to heat a home in winter months.
Is it possible to construct a heat engine that will not expel heat into the atmosphere?
is it possible to construt a heat engine that will not expel heat into the atmosphere
What is room sensible heat factor?
It is the ratio of room sensible heat to the total heat.
Is an urban heat island effect cool or warm?
The urban heat island effect is a warming effect. Unban means 'city'. Buildings and roads retain more heat and warm the air around them, so cities are warmer then the countryside.
How does the heat island effect in cities create convection cells?
Monthly rainfall is greater downwind of cities, partially due to the UHI. Increases in heat within urban centers increases the length of growing seasons, and decreases the occurrence of weak tornadoes. The UHI decreases air quality by increasing the production of pollutants such as ozone, and decreases water quality as warmer waters flow into area streams, which stresses their ecosystems. Not all cities have a distinct urban heat island. Mitigation of the urban heat island effect can be accomplished through the use of green roofs and the use of lighter-colored surfaces in urban areas, which reflect more sunlight and absorb less heat. Despite concerns raised about its possible contribution to global warming, comparisons between urban and rural areas show that the urban heat island effects have little influence on global mean temperature trends.
What is a dangerous impact of the environment in the urban area and solutions?
The Urban Heat Island effect is one major impact in the urban area. The Urban Heat Island effect is when the temperature in a city rapidly increases. One solution to this problem is planting more trees for shade. Another solution is installing rooftops that reflect rather than retain heat.
What is the importance of bio-asphalt in union budget 2011?
it can be made from renewable sources and lower the temperature of urban heat island.
What is the importance of bio asphalt in union budget 2011-2012?
it can be made from renewable sources and lower the temperature of urban heat island.
Why do urban area have higher temperature?
In short, I think urban areas have a high temparature due to pollution and high population density.
What are the effects of heat waves?
heat stroke, heat cramps and heat exhaustion
What factors contribute to an urban heat island?
Increased precipitation downwind of the city.
Is an urban heat island is similar to the Greenhouse Effect or climate change?
No, these are two different things. The urban heat island has to do with how much heat the earth absorbs, while the greenhouse effect is about how much heat the earth loses. During the daytime, sunlight hits the earth. Some of it is reflected back into space, and some is absorbed by the ground. When the ground absorbs sunlight, it heats up. Some of this heat is then transferred to the air by direct contact; this is what keeps our atmosphere warm. The rest of the ground's heat is re-radiated back into space in the form of infrared light. The greenhouse effect is where gases in the atmosphere like carbon dioxide reflect that IR light back into the ground. Because there is less heat escaping, the temperature of the atmosphere rises. The urban heat island effect happens because artificial surfaces like asphalt absorb more sunlight and reflect less than surfaces like grass or treetops. Because of this, the ground is generally warmer in cities and places with a lot of pavement. Because the ground heats the air, the air in cities will be warmer than air in the country. On a sunny day, the air above a parking lot will always be warmer than the air above a grassy field. An urban heat island is the same effect, just on a bigger scale.
Why is it difficult to start a fire in extreme cold?
Fire needs three things to burn: Fuel (like gasoline), Heat, and Oxygen (O2). If the heat is lessened, then the fire has a harder time burning.
What are the effects of heat on?
they cook.
What are the effects of heat on an insulator?
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