When it's cold, we walk over and turn up the thermostat, and when it is hot, we walk over and turn on the air conditioner to cool us down. But, how does that little box on the wall actually control the temperature of our homes or offices?
A mechanical thermostat is actually a very simple device. It is basically a thermometer attached to a switch that turns on your heater, whether your heat source is natural gas or electricity. If you remove the cover of your thermostat, you will see the inner workings and get a better idea of how a thermostat works.
The top layer holds a mercury switch and a thermometer coil. The mercury switch is just a small vial filled with the liquid metal, mercury. Within this vial are three wires: one at the bottom of the vial; one at the left of the vial; and one at the right of the vial. As the temperature rises or cools, the vial of mercury gets tipped to the right or the left making the corresponding wire come into contact with the wire that runs along the bottom. If the mercury gets tipped to the left, a connection is made that creates a current that energizes a relay, which starts the heater and circulation fan. As the room heats up, the vial levels off and once that is in balance, the connection is broken causing the heater to turn off. If the mercury switch is tilted to the right, another relay causes the air conditioner to turn on.
What tips the vial in either direction is the thermometer coil that rests against the vial of mercury. The thermometer coil is constructed of a bi-metallic strip made of two different types of metal, usually copper and iron, which are bonded together. Because the different metals respond to heat at different levels, this strip contracts and expands causing the coil to curl up or uncurl as the temperature changes. This curling or uncurling motion tilts the mercury vial, which then signals the heating source to kick off or on. When you adjust the temperature knob on your thermostat, you are actually adjusting the tightness of the coil.
Beneath the top layer of your thermostat, you will see the circuit board, which houses the wires that actually lead to the circulation fan and heat source. The circuit board is connected to the mercury switch via a metal screw and wire, which "reads" the switch and turns on the appropriate heating or cooling device.
Newer on the market are digital thermostats. These thermostats differ from the mechanical thermostats in that they use a thermistor, a resistor whose electrical resistance changes with temperature. The microcontroller in a digital thermostat measures the resistance and converts that number to a temperature reading. Digital thermostats can save energy because they can be programmed to turn the heat or air conditioning off or on at preset times throughout the day. For example, you can set the air conditioning to come on an hour before you come home from work, or have the heater remain off during the hours while you work and then turn on an hour before you get back so your home is warm and cozy when you open the door.
Article Source: http://EzineArticles.com/?expert=Zhai_Jizhe
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Tuesday, April 26, 2011
KN Air Intake Performance Components
Aftermarket Performance components and add-ons for your auto or truck are fabricated by K&N that bids the finest in caliber, durability and execution for your vehicle. Air intake outfits is the best enhancement one could attain for their vehicle's engine that will provide quick H.P. and torque improvements. These frugal outfits could accept assortments of unlike builds established upon vehicle device characteristic and usable space below the hood. For each one of these outfits is configured to allow force end-to-end of the revolutions per minute array. Finding clearer air travel entails best execution by your engine, in addition to equally a more farseeing life overall and these cold air intake add-ons allow for accomplishing these goals.
K&N Air Filter that's expanded the intake fabrication are washable and reclaimable for life. Whenever your anticipating aftermarket functioning car and import racing components for your auto or truck and then actually await no longer than KN Engineering. From air filters to cold air intakes, you'll ascertain the correct component by KN. All adapters, filtrates and tubing is constructed from superiority materials such as steel, aluminum, silicon, or strengthened nylon to assure long life.
These component parts with its own air filter will substitute the factory air box allowing for both High-Flow air filter engineering and a bigger air cleaner sizing. These advancing combination will increment H.P. and sound that's great as well. Blink of an eye profits that have been configured and built by this company and enforced into the component will deliver an addition of HP and acceleration. These elements are devised to work with your vehicles computer, enabling a bother free installment. It will feel as if a completely new animal is hanging around below your hood, then adding one of these parts is the correct path to follow. This careful custom tuning gives you increased power throughout the entire RPM range.
The unequaled conception of the filter that accompanies the uptake tube has been made to accept an additional area because of the exposed air filters arrangement which, allows for even further air flow and less limitation of flow of air when contrary to the stock K&N OEM alternate filtrate, which is forever bounded to the sizing of the manufactory air box. This admits all installment hardware, directions, boxing and paperwork.
Accouterments by this manufacture in air-intake conception let in the 57i Performance Induction Kit, Fipk Fuel Injection execution outfit, 77 Series High functioning Air-Intake-Kit, Air Charger High operation outfit and the legendry Drop in alternate filters. Additional part blueprints admit the Typhoon Cold air system and the Complete Typhoon outfit in addition to we have the Typhoon short ram intakes.
Whatever your desire, K&N technology gets you covered with top-grade flow of air applied science for your auto or truck that has arrived at extensive research and development with the highest guidelines in place. They have examined their merchandise in full ascertaining that the buyer have the best product on the market today!
K&N Cold Air Intakes has developed supreme air intakes that are second to none. With popular components like the 57i, K&N Fipk Air Intake, 77 Series, AirCharger and K&N Typhoon Cold Air Intakes and Short intake one can not go wrong.
Article Source: http://EzineArticles.com/?expert=Len_Troiano
Article Source: http://EzineArticles.com/5483481
K&N Air Filter that's expanded the intake fabrication are washable and reclaimable for life. Whenever your anticipating aftermarket functioning car and import racing components for your auto or truck and then actually await no longer than KN Engineering. From air filters to cold air intakes, you'll ascertain the correct component by KN. All adapters, filtrates and tubing is constructed from superiority materials such as steel, aluminum, silicon, or strengthened nylon to assure long life.
These component parts with its own air filter will substitute the factory air box allowing for both High-Flow air filter engineering and a bigger air cleaner sizing. These advancing combination will increment H.P. and sound that's great as well. Blink of an eye profits that have been configured and built by this company and enforced into the component will deliver an addition of HP and acceleration. These elements are devised to work with your vehicles computer, enabling a bother free installment. It will feel as if a completely new animal is hanging around below your hood, then adding one of these parts is the correct path to follow. This careful custom tuning gives you increased power throughout the entire RPM range.
The unequaled conception of the filter that accompanies the uptake tube has been made to accept an additional area because of the exposed air filters arrangement which, allows for even further air flow and less limitation of flow of air when contrary to the stock K&N OEM alternate filtrate, which is forever bounded to the sizing of the manufactory air box. This admits all installment hardware, directions, boxing and paperwork.
Accouterments by this manufacture in air-intake conception let in the 57i Performance Induction Kit, Fipk Fuel Injection execution outfit, 77 Series High functioning Air-Intake-Kit, Air Charger High operation outfit and the legendry Drop in alternate filters. Additional part blueprints admit the Typhoon Cold air system and the Complete Typhoon outfit in addition to we have the Typhoon short ram intakes.
Whatever your desire, K&N technology gets you covered with top-grade flow of air applied science for your auto or truck that has arrived at extensive research and development with the highest guidelines in place. They have examined their merchandise in full ascertaining that the buyer have the best product on the market today!
K&N Cold Air Intakes has developed supreme air intakes that are second to none. With popular components like the 57i, K&N Fipk Air Intake, 77 Series, AirCharger and K&N Typhoon Cold Air Intakes and Short intake one can not go wrong.
Article Source: http://EzineArticles.com/?expert=Len_Troiano
Article Source: http://EzineArticles.com/5483481
Saturday, April 16, 2011
Several Hints in Troubleshooting a Windshield-Washer Pump
If your windshield-washer fluid cannot flow freely, you will find that this can be a problem for you since you cannot use it properly. In this matter, the problem might be caused by some simple things such as dirt in the spray nozzle or disconnected hose. Follow the following steps to troubleshoot the problem that you have on your windshield-washer pump so that you will be able to clan the windows soon.
1. You should turn on the pump with the engine off but the key is in the "ON" position. In this position, you should listen for a humming sound. This is done to determine the operation of the windshield motor. Then you should look for the hood of the windshield washer and open it. Then you should ask your friend to listen to listen to it while you turn on device. If you cannot hear any sound, you should check the fuses.
2. When you find the fuse is blown, you should replace it. But, if it is not blown and the motor of the device is silent, you should have the mechanic replace the motor of your windshield washer. If there is humming in the motor, you should proceed to step 3.
3. You should check the reservoir of the windshield-washer. If the level of its windshield-washer fluid is empty or low, you should add the water toward it. In this case, you should fill it right up to the top. You will find that the reservoir doesn't have any indicator to indicate full or empty fluid. When adding the fluid to the reservoir, you can use a funnel in order not to spill it.
4. You should check the reservoir. Make sure that the water inside it is not frozen. This will happen if you use the water instead of fluid for windshield-washer.
5. You should make sure that the small rubber hose attached well into the reservoir.
6. You should follow the hose to the hood. This will enable you to check for torn, crimped or broken lines. You will find that the line splits into two lines at the hood. If you think that it is damaged, you should remove the line. You can do it by pulling its base. Then, you should purchase a hose that has the same width and length. Then, install it and check for leaks.
7. You should clear any debris and leaves from the area around the nozzles that are located on top of the hood. Then, you should clear the passage of the washer-fluid nozzle with a pin or a needle.
8. You should unhook the lines of the washer. This locates at the hood and at the reservoir. Then, you should force the compressed air through the lines. This will dislodge anything that is stuck in them.
However, there are many types of vacuum pump that you can find. For this, you have to make sure that the device can be use properly. You can also find that there are many options of this device that can fulfill your needs such as Thomas vacuum pump.
Article Source: http://EzineArticles.com/?expert=Darnell_X_Hardin
Article Source: http://EzineArticles.com/5289264
1. You should turn on the pump with the engine off but the key is in the "ON" position. In this position, you should listen for a humming sound. This is done to determine the operation of the windshield motor. Then you should look for the hood of the windshield washer and open it. Then you should ask your friend to listen to listen to it while you turn on device. If you cannot hear any sound, you should check the fuses.
2. When you find the fuse is blown, you should replace it. But, if it is not blown and the motor of the device is silent, you should have the mechanic replace the motor of your windshield washer. If there is humming in the motor, you should proceed to step 3.
3. You should check the reservoir of the windshield-washer. If the level of its windshield-washer fluid is empty or low, you should add the water toward it. In this case, you should fill it right up to the top. You will find that the reservoir doesn't have any indicator to indicate full or empty fluid. When adding the fluid to the reservoir, you can use a funnel in order not to spill it.
4. You should check the reservoir. Make sure that the water inside it is not frozen. This will happen if you use the water instead of fluid for windshield-washer.
5. You should make sure that the small rubber hose attached well into the reservoir.
6. You should follow the hose to the hood. This will enable you to check for torn, crimped or broken lines. You will find that the line splits into two lines at the hood. If you think that it is damaged, you should remove the line. You can do it by pulling its base. Then, you should purchase a hose that has the same width and length. Then, install it and check for leaks.
7. You should clear any debris and leaves from the area around the nozzles that are located on top of the hood. Then, you should clear the passage of the washer-fluid nozzle with a pin or a needle.
8. You should unhook the lines of the washer. This locates at the hood and at the reservoir. Then, you should force the compressed air through the lines. This will dislodge anything that is stuck in them.
However, there are many types of vacuum pump that you can find. For this, you have to make sure that the device can be use properly. You can also find that there are many options of this device that can fulfill your needs such as Thomas vacuum pump.
Article Source: http://EzineArticles.com/?expert=Darnell_X_Hardin
Article Source: http://EzineArticles.com/5289264
how to choose corsa mufflers
Flow master Exhaust Inc manufactures performance exhausts and mufflers for cars, trucks and SUVs. Their performance street mufflers are designated into groups called series and go from mild to wild. When choosing a muffler (corsa muffler or anything) you are going to want to decide what sound you are looking for do you want as loud as possible? Middle range sound or perhaps a quiet muffler? If loud is the name of the game for you then you will want a flow master 40 series muffler. The 40 series are the loudest family of mufflers and are the most aggressive. Among this family of 40 series is the super 44, 40 delta, and super 40 mufflers.
Now if mid range sound is important to you then you will want to look at the 80 series, hush power or 50 delta muffler systems that flowmaster has to offer. these are considered to be the less interior resonance options and still get great power gains in your exhaust flow. The quitter of the families are the 50, 60 and 70 series family of muffler. The best way to think about a flow master 40 series will be a loud metallic scream where as a mid range will be a more deep bass tone. The quiet ones can be compared to a borla or corsa exhaust. If you like to come home at night and not upset your neighbors you should buy a hush power system. Next time we will go a little more in-depth into which sub family of these series you want specifically.
For more information, I'd definitely recommend researching Flow master Exhaust and flow master mufflers
Article Source: http://EzineArticles.com/?expert=Jenny_Masters
Article Source: http://EzineArticles.com/3822786
Now if mid range sound is important to you then you will want to look at the 80 series, hush power or 50 delta muffler systems that flowmaster has to offer. these are considered to be the less interior resonance options and still get great power gains in your exhaust flow. The quitter of the families are the 50, 60 and 70 series family of muffler. The best way to think about a flow master 40 series will be a loud metallic scream where as a mid range will be a more deep bass tone. The quiet ones can be compared to a borla or corsa exhaust. If you like to come home at night and not upset your neighbors you should buy a hush power system. Next time we will go a little more in-depth into which sub family of these series you want specifically.
For more information, I'd definitely recommend researching Flow master Exhaust and flow master mufflers
Article Source: http://EzineArticles.com/?expert=Jenny_Masters
Article Source: http://EzineArticles.com/3822786
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