Guide To Gas Patio Heater Regulator: The Intermediate Guide For Gas Patio Heater Regulator > 자유게시판

gas patio outdoor gas heater heater regulator (great post to read)

If you're planning on cozying with the cold outside with a propane patio heater, you need to know how to properly use this appliance. Matthew Griffith, prevention section chief of Montreal's fire department, said that consumers should be looking for products that have safety certifications.

The patio heater must be properly connected and there should be no combustible material nearby.

Pressure Regulator

Gas regulators are essentially mechanical appliances that we use in our cars and homes every day without giving them a second thought. Their invention, 135 years ago, has revolutionized the way natural gas and propane are used for heating, cooking and welding with oxy-fuel. The fundamental role of regulators is exactly similar, but there are many variations. The regulator utilizes an element that detects pressure, usually a dialythm made of fabric, to control a valve plug's position and restrict the flow of gas.

The diaphragm connects to the valve stem with rods that run down through the set spring, through the diaphragm, and finally into the valve. This mechanism detects gas pressure inside the house or pipeline and adjusts the position of the valve plug to match the demand. As the use of gas in the house decreases and the pressure between the regulator and the house decreases also. This causes the diaphragm to shrink downwards, and it moves the valve plug closer to the orifice, which limits the flow. As the demand for gas increases in the home the valve will open more, thereby increasing the flow.

The valve plug remains closed until the demand of the house decreases. The valve is then opened to increase the flow. This process is referred to as size and is the fundamental function of the regulator.

As the valve opens it creates pressure up in the main chamber of the regulator, which is connected to the port for hose outlet with venturi tubes (see the image). The pressure can be adjusted by turning the screw or handle located on the outside of the regulator. When the screw is rotated counterclockwise, it raises the pressure. When it is turned clockwise it decreases the pressure.

When choosing a pressure regulator make sure to keep in mind that the maximum and minimal nominal pressures are determined by commercial standards and NOT the pressure at the supply line. The regulator must also be compatible with the hose you are using. Choose a hose which is labeled as whistle-free, which will feature various sizes of rings to prevent resonant sound from accumulating across the length of the hose.

Thermocouple

Thermocouples operate on the premise that different types of metals in contact with each other at their ends can generate an electric current, even when they are operating at extremely different temperatures. They are used to identify temperatures that differ between points of the circuit and convert that data into an electronic signal that can be read by a thermocouple gauge or other instrument. Thermocouples are superior to other sensors, such as thermostors. They are able to measure extremely high temperatures and operate in harsh environments.

The measuring (or hot) junction is created by connecting two dissimilar metals at one end, and at the other, the reference (or cold) junction, is maintained at an unchanging temperature. Thermocouples are passive devices, meaning they don't require power to operate. The voltage produced is proportional to the temperature difference between the measuring junction and the reference junction. The thermocouple manufacturers and organizations that offer metrology standards, for example NIST provide reference tables for the function E (T). Displaystyle scriptstyle e(T) for each type of thermocouple.

There are three types of thermocouple connections: exposed, grounded and weld. The exposed junction style extends out of the protective sheath and offers the fastest response time. A thermocouple that is grounded is recommended for testing in corrosive environments. A welded-wire thermocouple is physically isolated from its sheath by using mgO powder. This stops moisture or gas from penetrating and causing error.

A thermocouple that is welded offers the added benefit of being more resistant to vibration. It is recommended to use it in harsh environments that have pressures up to 3000 psi. A thermocouple that has been damaged is usually due to a lack in polarity. If the sheath is not correctly polarized, both ends of the thermocouple will have unequal voltages at the junction of measurement which could result in an inaccurate reading and even end up damaging the instrument. A sensor that is not properly calibrated or installed can cause a malfunctioning thermocouple.

Thermostat

gas fired patio heaters patio heaters in contrast to electric heaters that are wired to the wall they are portable and are powered by natural gas or propane. Thermostats regulate flow of energy into these cylinders in order to ensure that they do not overflow, but they still provide heat as needed. The thermostat does this by sensing the temperature of the air that passes over it. The thermostat also detects when the room has cooled down to a comfortable temperature and turns off the heating.

Digital thermostats are the most common. It utilizes a microcontroller that converts a change in electrical resistance into a measure of temperature. It is able to accomplish this more accurately than the older mercury switch thermostats that utilized a coil of mercury with three wires in it that would move depending on the temperature. This enabled it to tilt a mercury switch that was connected to the electrical circuit of a heater or air conditioning unit, and turn it off or on.

Mechanical thermostats are another kind. It's a small cylinder filled with wax which begins to melt when it reaches a temperature that is perhaps 180 degrees F (different thermostats open at different temperatures). A rod that connects to the valve presses into the wax and opens the valve when it's hot. As the room cools, the wax contracts and the rod is pulled back into the cylinder, closing the valve.

You can also program thermostats to change the temperature at various time of the daytime. You can save energy by programming your heating system to turn on and off while you are at work, or sleeping, rather than having it on all the time. You can also set the thermostat to turn on earlier, so that your home will be at a comfortable temperature when you arrive back from school or work. Thermostats often have an element known as the heat anticipator, which stops the heater from switching on too soon. This is due to the fact that different areas of the home often reach the set temperature before the thermostat does.

Pilot Light

While many modern heating and homes have done away with pilot lights older furnaces and homes still use them to light the gas in the chamber for burning. It's important to learn how to safely to relight the pilot light in case it ever fails.

A pilot light produces a small flame which heats a thermocouple. The thermocouple generates electricity, and keeps the gas valve open. When the pilot flame stops the thermocouple cools and stops producing electricity, closing the valve. Pilot lights are used in the majority of propane and natural appliances, such as fireplaces, water heaters barbecues, grills, furnaces and hot tubs.

The process of lighting a pilot light requires that you first shut off the gas valve on the appliance. Then, you must remove any doors or panels that might be in the way of accessing the pilot light. Follow the directions on the front of the light to open the tube for the pilot light. After you've re-lit your pilot light, return the gas valve knob to the "on" position.

Safety is the main reason for leaving the pilot light on. If it's accidentally shut off the gas constantly venting out of the pilot light tube may accumulate in your home until a spark from the cigarette lighter or static electricity ignites it and causes an explosion. To avoid this, pilot tubes are equipped with an integrated cutoff valve.

Apart from the safety concerns the burning of a pilot light also wastes a significant amount of energy. Various studies have shown that a pilot light could consume between $7 and $18 worth of gas each month. The wasted fuel puts a heavier burden on the air conditioner in summer. Another issue with the pilot light is that it could attract spiders, who can create webs that block the pilot tubes. Also, a constant flame can release trace amounts of the mercaptan compound that produces the rotten egg smell found in natural gas patio heater gas. If you're ever concerned about these issues, you should consider purchasing a gas fireplace with a remote control or replacing your fireplace with a more efficient, modern-day model.