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https://www.fireplacesandstoves.uk/products/outdoor-propane-gas-pyramid-patio-heater-13kw
Gas Patio Heater Regulator If youre planning to warm up in the cold outdoors with a propane patio heater you need to know how to properly use this appliance Matthew Griffith chief of the prevention department of Montreals Fire Department advises that consumers look for products with safety certifications The patio heater must be properly connected and there shouldnt be materials that could ignite nearby Pressure Regulator Gas regulators are simple mechanical devices we drive by daily in our cars and at home without giving them a second thought Their invention which took place 135 years ago has changed the method in which propane and natural gas are utilized for cooking heating and oxyfuel welding The basic role of regulators is exactly similar but there are numerous variations The regulator uses an element that detects pressure usually a fabricreinforced dialythm to control a valve plugs location and limit the flow of gas The diaphragm joins the stem of the valve by rod that runs through the set spring and diaphragm before entering the valve The mechanism is able to detect the gas pressure in the house or pipeline and adjusts the position of the valve plug to meet the demand As the consumption of gas in the house decreases the pressure between the regulator and the house also decreases too The diaphragm is deflated downward and the valve plug moves closer to the orifice to stop flow As the demand for gas in the home increases the valve opens further increasing the flow of gas The valve plug remains shut until the demand of the house decreases The valve is then opened to increase the flow This process is calledsizing and is the primary function of the regulator When the valve is opened the pressure builds up in the main chamber of the regulator which is attached to the port for hose outlet with the venturi tube see the image This pressure is controlled by adjusting a screw or handle located on the exterior of the regulator When the screw is turned counterclockwise it moves up and reduces the pressure When it is turned clockwise it reduces the pressure When selecting a pressure regulator take into consideration that the nominal maximum and minimum pressure is determined by commercial standards not the pressure of the gas in the supply line The regulator must be compatible with the hose you use Find a hose marked whistlefree It should have alternating rings of different sizes This will prevent the resonant sounds from building up throughout the length Thermocouple Thermocouples work on the principle that different metals in contact at their respective ends can generate the voltage even if they are at wildly different temperatures They are used to measure the temperature difference between two points in a system and convert this information into an electrical signal that can then be read by thermocouple meters or any other instrument Thermocouples possess several advantages over conventional sensors such as thermistors for instance the ability to measure extremely high temperatures and to function in harsh environments A pair of metals that are dissimilar is connected to one end of the sensor to create the measuring aka hot junction and the other is kept at a fixed temperature also known as the reference aka cold junction Thermocouples produce small voltages but they are passive devices that do not require power to work The voltage produced is proportional to the difference in temperature between the reference and measuring junctions Manufacturers of thermocouples as well as organizations that offer metrology standards such as NIST provide reference tables for the function E T displaystyle scriptstyle eT for each specific thermocouple type There are three main kinds of thermocouple junctions an exposed grounded and welded wire The exposed type of junction protrudes out of the protective sheath and provides the fastest response time For measurements in corrosive conditions a grounded thermocouple should be employed A thermocouple that is welded is physically isolated from the sheath using mgO powder to prevent the penetration of moisture or gas that could lead to errors A thermocouple that is welded offers the added benefit of being more resistant to vibration It is recommended to use it in abrasive environments with pressures of up to 3000 psi A thermocouple that has been damaged is usually due to a lack in the polarity If the sheath has not been polarized both ends of the thermocouple may have different voltages at their junction for measurement This could result in an inaccurate reading or even damage to the instrument A faulty thermocouple can also be caused by a poorly calibrated or installed sensor Thermostat In contrast to electric heaters that need to be hardwired into the wall gas patio heaters are portable and utilize propane or natural gas cylinders for fuel Thermostats regulate the flow of energy to these cylinders so that they dont overflow but they still provide heat when required The thermostat achieves this by detecting the temperature of the air that is passing through it The thermostat can also detect when the room is at a comfortable temperature and turn off the heating Digital thermostats are the most common It makes use of a microcontroller to convert an electrical resistance into a temperature reading It can do this more accurately than the older mercury switch thermostats that utilized a mercury coil that had three wires that would move depending on the temperature This enabled it to tilt the mercury switch connected to the electrical circuit of the air conditioning or heater unit and turn it on or off Another type of thermostat is a mechanical one It is tiny cylinders filled with wax which begins to melt at a certain temperature of perhaps 180 degrees F different thermostats open at different temperatures When the wax is hot a rod that is connected to the thermostat opens the valve As the room cools the wax contracts and the rod is pulled into the cylinder closing the valve You can also program thermostats to alter the temperature at different times during the day You can reduce energy usage by programming your heating to switch off and on when you are at work or sleeping instead of being always on You can also set your thermostat to turn on sooner so that you will arrive home to an ideal temperature Thermostats often include a feature called a heat anticipator which will stop the heater from turning on too early This is due to the fact that different areas of the home often attain the temperature set before the thermostat itself does Pilot Light Many newer heating systems homes and furnaces are no longer entirely with pilot lights However older homes still rely on them to ignite gas in the burner chamber If the pilot light ever shut off its crucial to know how to relight it in a safe manner A pilot light generates small flames that are heated by the thermocouple This thermocouple generates electricity and keeps the gas valve open If the pilot flame dies the thermocouple cools and ceases to produce electricity closing the gas valve Pilot lights are used on most propane and natural gas appliances such as water heaters Relighting outdoor gas patio heater requires that you first shut off the gas valve at the appliance The next step is to take off any doors or panels that might be blocking access to the pilot light Follow the directions on the front of the light to open the tube for the pilot light Once youve relit the pilot light return the knob on the gas valve to the on position Safety is the primary reason for leaving a pilot light on If its accidentally extinguished the gas constantly venting out of the pilot light tube could build up in your home until sparks from the smoking cigarette or static electricity ignites it and causes an explosion Pilot tubes are designed to include an inbuilt cutoff valve to prevent this from happening A constantly burning pilot light is not just dangerous however it also consumes energy Various studies have shown that a pilot light could burn between 7 and 18 of gas per month This wasted fuel also places a heavier load on the air cooling system in summer Another issue with the pilot light is that it attracts spiders who can create webs that block the pilot tubes A constant flame could release small amounts of the compound Mercaptan which is responsible for the smell of rotten eggs in natural gas If youre worried about these issues think about buying a remote controlled gas fireplace or replacing your fireplace with a new efficient model
