A computer fan is any fan inside, or attached to, a computer case used for active cooling, and may refer to fans that draw cooler air into the case from the outside, expel warm air from inside, or move air across a heat sink to cool a…
b. Wind machines – power driven fans which resemble plane propellers that mix cold air at ground level and warm air from higher up resulting in increasing the air next to the ground.…
Workplace (ventilation and heating) – look at – natural ventilation, room temperature and window blinds…
Summer heat is cause for caution. Drivers must beware of blinding sun and take care to use sunglasses or pull down visors. Hot, humid weather may also cause windshields to fog up. Using air conditioning to maintain comfortable environment for passengers and pets is also often sensible. Parents may also find melted crayons or plastic toys if the car is left in the heat too long. On the other hand, leaving the air conditioning on too long can even cause the car to overheat. Additionally, the temptation to take long drives may lead to driver fatigue. All of these potential hazards mean drivers should be careful driving in the summer.…
American Lung Association. (2014, Jan 1). Indoor Air Quality. Retrieved Feb 18, 2014, from www.lung.org:…
The Urban Heat Island effect is known as the zone of hot air that develops over the urban areas and consequently higher temperatures than the surrounding rural area. Temperatures progressively decline as you move further from the urban areas; an example of this can be seen between Central London and the surrounding area, as there is a temperature difference of 6 degrees. However, even small urban areas can have urban heat island effects.…
Electric fans are used to regulate interior temperatures. People commonly use them during hot and humid summer days to increase air movement throughout a home. Some electric fans are movable and can be put on a desk or on the floor. Larger models are permanently installed on the ceiling. Nowadays, some electric fans can cause danger to people especially to children. It may cause wounds due to its blades and heat exhaustion.…
Pan, D., Chan, M., Deng, S., & Lin, Z. (2012). The effects of external wall insulation thickness on annual cooling and heating energy uses under different climates. Applied Energy, Retrieved November 25, 2012 from http://web.ebscohost.com/ehost/detail?vid=4&hid=25&sid=4c2fde09-901e-4d2d-9a79-c673738a0de6%40sessionmgr10&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=keh&AN=76917328…
Conversely, humid air slows evaporation and makes a surface feel warmer...but this effect is described in the heat index.…
The most common type of heat pump is the air-source heat pump, which transfers heat between your house and the outside air. If you heat with electricity, a heat pump can trim the amount of electricity you use for heating by as much as 30% to 40%. High-efficiency heat pumps also dehumidify better than standard central air conditioners, resulting in less energy usage and more cooling comfort in summer months. However, the efficiency of most air-source heat pumps as a heat source drops dramatically at low temperatures, generally making them unsuitable for cold climates, although there are systems that can overcome the problem.…
The other factors that might affect the temperature differences between the two settings are water vapor in the air, the aerosols, ozone depletion. The water vapor in the air can affect temperatures by absorbing heat energy given off the Earth (Lutgens et al, 2011). Another factor that might affect temperatures is aerosols which can absorbs or reflect in coming radiation (Lutgens et al, 2011). Ozone depletion is the final factor that might affect temperatures because the ozone filters out UV radiation from the sun, ozone depletion can cause changes in temperature.…
Other great ways to increase air circulation are to move the furniture away from the corners of the walls and from the walls themselves, leaving a gap for the air to circulate better, and to place tower fans in all the rooms of your…
It has this affect because it is reducing the oxygen in the air of the room and filling it with carbon…
While requirements for natural gas heating decrease during the summer months, demand for space cooling increases during this warmer…
The greenhouse effect- The greenhouse effect was first identified in the early 19th century (Wikipedia, 2015). This greenhouse effect is a natural way of trapping in a certain amount of the sun’s heat which contributes to keeping our earth warm enough to live on. However the high increase in these greenhouse gasses over the past few years is forming a ‘blanket’ over the earth which is trapping more heat in our atmosphere than it should thus causing the earth to retain too much heat from the incoming solar radiation, this process is known to us as ’The greenhouse effect’ (EPA, 2014). Evidence has shown that the earth’s temperature has significantly increased over the past 100 years, (Cook, 2010). The three main gasses that are released directly into the atmosphere by human activities are Carbon dioxide; Methane and nitrous…