Understanding Heating Systems Home Business Articles | July 27
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, 2012
Heating systems in buildings can be part of the more complex HVAC systems. There are several types of heating systems as you know, but you know of central heating, which is popu...
Heating systems in buildings can be part of the more complex HVAC systems. There are several types of heating systems as you know, but you know of central heating, which is popular in countries with cold climates. Central heating system has a boiler and heat pump. Central heaters produce steam or warm air
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, which heat up a building. These systems may use water as a heat carrier. This technology is featured in hydronics. Ducts will carry air to distribute heated fluid. Radiators, in turn, will distribute heat to the air, although heat transfer does not happen through radiation but convection. Radiators are installed on walls or floors.
The simplest forms of heating systems are boiler-fed systems, which have pumps that distribute hot water to radiators. These systems rely on a supply of water to work. The heated water may be used to provide hot water to homes. On the other hand
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, forced-air systems distribute hot air to pipes. In HVAC systems, the same pipes or ducts are used to provide cool air during warm season. Advanced systems have filtration systems that filter air.
Some heaters are operated by electricity, using the principle of resistive heating. Resistive heating makes use of thin wires or filaments to act as resistors, which produce tremendous heat when electric current passes through them. These simple heaters are not part of complex heating systems and are operated independently in rooms. A portable heater is an example.
You may also have heard of the heat pump, which offers another way of heating homes. This is only used in places with mild winters. It works by extracting heat from the outside air or from the ground. Installation of heat pumps is often expensive because it involves ground extraction. Heat pumps are energy efficient in the long run though
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, but these are not the common option for homeowners.
Perhaps the most important component of heating systems is the radiators. You find the radiators in the coldest part of the room, so they are probably next to windows. Proper placement of radiators is necessary in preventing adverse effects of convection. If the radiator is far from the window, temperature variation can occur inside a room. In some cases, this can cause uncomfortable temperature difference between air near the ceiling and air near the floor. Check the placement if your radiator if your head feels warm while your feet feel cold.
Homes and buildings need to keep the efficiency of heating systems by making sure windows and doors are shut and walls are sealed. Vents or slits on the walls and improperly closed windows can lead to streaming of cold outdoor air and leaking out of warm air.
Safety measures have to be taken when operating heaters. Indoor heating through the use of furnaces or space heaters rely on combustion. In many cases, this is incomplete combustion
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, a reaction that results in generation of carbon monoxide, formaldehyde, and other noxious gases. Build up of these gases can be lethal. Carbon monoxide poisoning causes headaches, fatigue, and nausea. Air quality should be checked when these symptoms are felt. The best way to avoid buildup of poisonous gases is ventilation.
Article Tags: Heating Systems
Want To Speed Up Your Computer? Computers Articles | July 20
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, 2006
Being in the computer repair business, I often get asked, ?How do I speed up my computer?? This is a tough question to answer without any knowledge of the computer and software that a user might have. But I do have one recommendation that usually helps out most people.
If you?ve had your computer for more than a year, there are 1000?s if not millions of unused files just laying around your system. Most people know about clearing their browser cache, and maybe even using Windows XP Disk Clean Up through the properties of your C:Drive. And both of those programs help.
But there are large amounts of files that are created by third party programs
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, installers, Java cache files, and etc. It?s difficult to even find these files let alone clean them out on a regular basis. Several of the more active adware and virus programs use these areas to operate from too.
And then there?s all the registry entries that go with these files. The registry is a database on your computer that is used by the system to register any software, hardware, and activities. On a brand new computer it is huge in both size and number of entries. But over time this database can become quite bloated and slow down daily operations.
Every time you do something to change your user
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, software, or hardware settings this activity is recorded in the registry database. Think about it for a minute, every single time you install, change, or even move things around it is recorded. The number of entries on any daily session can be in the 1000?s.
Every day when you boot up
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, your system runs through every setting in the registry to know how, where, and what is on your computer. As time goes on, and new entries are made, this becomes a more time consuming task. And during the normal operation
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, the registry is check 1000?s of times for file locations, hardware driver aspects, and many of the different settings.
So the bigger the registry, the more computing power and time is needed to complete these checks. And this type of access is going on every time yo.
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