How much does a 100 gallon propane tank weigh when empty? Use soapy water to inspect the tank, its nozzle, and the connection with the gas grill for leaks. WebBtu MMBTU Price Example Price per MMBtu Propane Equiv $/Gal; Propane ($/gal) 91,500: 0.091500: $0.52000: 5.683060: 0.520000: Natural Gas ($/MMBtu) 1,000,000: 1.000000: $5.00000: 5.000000: 0.457500: Electricity ($/kwh) 3,414: 0.003414: $0.05080: 12.879906: 1.361511: Crude ($/bbl) 5,800,000: 5.800000: $30.0000: 5.172414: 0.473276: Fuel Oil And it is also required to check the fuel gauge to know how much propane is left for the next refill. Required fields are marked *. running full bore. This will help in planning and budgeting, ensuring you dont run out of gas in your propane cylinder halfway through your barbecue. BlackBetty06. Lets take our 30,000 BTU heater, for example. And one gallon is equal to 4.24 pounds. a heating fuel. Keep them in a cool place. The propane grill design also influences how the heat is distributed and contained. I had leaves propane costing me $0.60/hr and corn costing me How can you tell is a firm is incorporated? eh? There are approximately 91,000 BTUs in a gallon of propane or 21,600 BTUs per pound. There are propane tanks of various sizes that hold a different number of BTUs. You can expect a 100lb propane tank to last you for 3-4 weeks of usage when you heat it for 8 hours a day. source for WebFor propane, thats 91,500 BTUs per gallon, per hour. Although I spent 24 years in the Natural Gas industry, propane is a different animal. 20 lb propane tank dimensions: Its 18 inches long with a 12-inch diameter. Gallons of propane used per hour= (watts/3000) x 0.65. The chart covers every propane tank from the smallest 1 lb tank to the biggest 2,000-gallon propane tank. The table above shows the number of hours you can run your heater continuously on a 100lb propane tank. We havent found a website resource that would like to list all the propane cylinders from 1 lb propane bottle to the huge underground 2,000 gallon propane tank with their sizes; primarily dimensions and tare weight (empty weight). to favor the corn (furnace duty cycle increases and uses more It is the quantity of heat required to raise the temperature of one All in all, a 20 lb propane tank packs quite a lot of BTUs. This chart covers the sizes and dimensions of propane tanks starting with the smallest (1 lb) and progressing to the largest propane tank (2,000 gallon): In many cases, you will also have to convert lb of propane to gallons of propane. These are the costs of the commodities themselves from the gas refineries. corn stove What years of time was the separate but equal doctrine the law of the land in the US? There are different ways of doing this. All you need to know is your heaters BTU rating. A full 33-pound tank can hold about 8 gallons of propane. To prevent an explosion due to too high pressure, propane tanks are filled only to 80%. HOW TO REFILL Coleman Propane 1lb Fuel Cylinder Canister Tanks . Looking closer you will also see that the unit price is $1.73 per pound. $25.99 / 15lbs = $1.73 per pound. Most consumers dont realize they are only receiving 15lbs of propane per tank. So, I'm burning about 305,000 BTU of wood per heating day, Please log in again. while A 33-pound propane tank is 2 feet tall and1 foot in diameter. That means the tank can hold about 100 gallons of propane. You may change the average cost/unit of any entry and hit update to determine real-time costs as pricing changes. The full 20 lb propane tank weighs 29.5 pounds, on average. Methane. readingpage of the results with actual numerical How Much Water Should A Dehumidifier Collect In A Day? To get the value of how much propane a 30000 BTUs heater uses, we have to 4.24 by 91500. To calculate the burn rate, you must first find out the consumption rate. But when On a (very) strong industrial-grade torpedo heater it will last 13 hours only. Winter vs Summer, 50% RH Rule. Do Portable Air Conditioners give off Carbon Monoxide? 100 lb is a bigger vertical propane tank size. 20 pounds of BTU is measured per burner, but the listed BTU can be in reference to a single burner, or it can be a combined BTU of all the gas grills burners, including the side burners. Is Alex cross wife Bree stone black or white? Coleman propane gas canisters are handy for camping. electricity Do LED Lights Need to Be Plugged In? Btu. For instance, a large home with several furnaces We hope all of this information on propane tank sizes will help you. A 100lb propane tank filled to 80% capacity (maximum) contains, 100 lb 21,594 BTU per lb 80% = 1,727,520 BTU. So, a more realistic approach would be to assume 4 hours to 8 hours of continuous heating a day. propane will produce 432,440 BTU's. Example 2: How many gallons of propane are in a 20 lb tank? Once you get the source of the leakage, you will decide if it needs to be fixed or replaced. gallons instead of BTU's because propane users buy their gas "by the gallon". heated more days or longer hours. Consequently, the higher the BTU rating, the faster your 1lb of propane will be depleted. In Basement All The Time? those same gallons purchased from the propane company, much like gallons of gas pumped into a car's gas tank. For reference, one gallon of propane would put out around 91,500 BTUs every hour. However, a pellet stove is often cheaper to install than a conventional wood-burning heater. (Calculated), How Many Gallons Of Propane In A 100 Lb Tank? This means the ambient temperatures influence the vaporization rate. It would be much easier for manufacturers of propane appliances and equipment to express gas usage in terms of With a bit of financil discipline allowing capital The pound of gas in your small propane tank should also serve as a reference point for your different cooking needs. Depo 25 Bonus 25 adalah suatu promo yang disediakan oleh agen judi slot online terpercaya dengan promo new member 100% minimal deposit 10 20 25 30 50 100 200 dengan To Rendah yang bisa kalian mainkan dengan Uang asli. ). So the tank has about 100 gallons of volume. 100 lb holds 80 lb of propane. As much as you are now capable of estimating its cycle, it is good practice to have a backup plan for those instances where you will run out of gas in your 1lb propane bottle a bit earlier than you had anticipated. Please try in a few minutes. with an High Superheat Low Subcooling: Only 1 Major Cause + How To Fix It? WebAn off-gas from a crude oil topping plant has the following composition: Component Vol. So, a 30000 BTU heater will use 1.39 pounds of propane. Each gallon of the propane tank is 92000 BTUs, and the weight of the 1 gallons tank is 4.24 pounds. BTU or Btu is a short form for The British Thermal Unit. A 20-pound propane tank is equal to 4.6 gallons. Propane tanks are never filled to 100% of their capacity. Empty 100 lb propane tank weighs 67 pounds. Specifically, I Look at the tare weight that is stamped on the collar/handle of the propane tank. electric Vaporization occurs when you turn on your appliance (in this case, the gas grill), which relieves some pressure from the cylinder. Can you use an Oil-filled Radiator in a Bathroom? It means the volume of the tank is 8 gallons. investments that save money over time, I started using shelled court as In the gas appliance world, we equate BTU's to be somewhat of an "appliance horsepower" measurement. Propane usage varies depending on the region you live in and the appliances you use. While these canisters are usually thrown away after being emptied,you can refill them using a 20 lb. The only modification to your house is a single 5 line is that if you'll live in your house for 2 winters 1 lb = 21,594 BTU of energy from propane. One pound of propane contains 21,594 BTU of heat energy (source). 500-gallon propane tank contains 45751000 BTUs. White gas (aka naphtha, 100% light hydro treated distillate, or Coleman Fuel)is the first choice for most people in North America whether theyre headed out for a summer weekend or for a month-long winter expedition in the Alaska Range. As we generally burn propane in gaseous (vapor) form, that 21,600 per pound is understood if we can convert the WHOLE pound into vapor. You will find that 0.65 gallons of propane can weigh approximately 2.73 pounds. How much propane will a 30000 BTU heater use? What does please be guided accordingly phrase means? North Americas Most Popular Portable Propane Heater! 10 SEER Vs 16 SEER Energy Savings Calculator + Chart, 17 SEER vs 19 SEER Energy Savings Cost Calculator + Chart, 17 SEER vs 20 SEER Energy Savings Calculator + 1-8 Ton AC Chart, Best Time Of Day To Use Dehumidifier Effectively? You might find yourself in a situation that forces a trip to the store in the middle of cooking if you cant accurately estimate your fuel consumption. You might notice that your propane is getting depleted much faster than you estimated. What Causes High Or Low Subcooling? Process of transferring data to a storage medium? propane cylinders,there is now a refillable cylinder available. And remember, temperatures colder than 38 degrees make the numbers When you have a heater that seems to be working great, but you can This is true when the propane tank is at a temperature of 60 degrees Fahrenheit. These conversions are essential to determining how long your propane heater will run when your propane is in a Southern Maine Renewable Fuels Even finding the dimensions of the most common 20 lb, 100 lb, 250 gallons, and 500-gallon propane tanks was difficult. WebCorn burners are available in the 30,000 to 200,000 BTU/hr range. Even if you sell your house, That means one 20-pound propane tank could heat that 1,000 square foot garage for more than 10 hours. heated my home office For example, in windy weather, the BTUs of propane will be more than in the area where there is mild air. savings this winter of $230 compared to electricity - more if WebExample: We can quite easily calculate how long will a 30,000 BTU patio heater last on a 20 lb propane tank like this; 30,000 BTU patio heater time = 378,611 BTU / 30,000 BTU per hour = 12.62 hours In short, a propane tank for a 30,000 BTU outdoor patio heater lasts for 12 hours and 37 minutes. How many BTUs are in 250 gallon propane tank? My numbers say my wood office stove gives 14,000 Copyright 2022 HomeApricot | About Us | Privacy Policy | Terms of Service. 1 Gal = 91,502 BTU of energy from propane. For example, a small-sized propane heater consumes 3,000 BTU of heat per hour (denoted in BTU/h). This is a measure of the total heat output and fuel consumption per hour (it can also be measured in megajoules). behavior. Here is the simple conversion we can use: How many BTUs are in a 100 gallon propane tank? Features a soft nose P.O.L. Tech Specs. The weight of 400 gallons is 1696 pounds. other fuels, the engine is rated by horsepower as a factor for explaining how much power the engine is capable of propane tank. corn burner With 18,300,000 BTU content, 250 gallon propane tank can run a 10,000 BTU/h heater or furnace for 76 days and 6 hours. The more the area, the more becomes the BTUs. Situs apa yang menyediakan Depo 25 Bonus 25 ? On Butane: 21,200 BTU per pound. How much do Infrared Heaters cost to run? 1 gallon of propane = 91,452 Btu 1 short ton (2,000 pounds) of coal (consumed by the electric power sector) = 18,820,000 Btu 1 kilowatthour of electricity = What are the most common propane tank sizes? LPG vaporization rate also drops as the liquid propane gets depleted. Full weight: 1,333 pounds. But generally, the BTU for propane for the fire pit and fireplaces do not cross 150000. However, this is not the full story as circumstances will cause variations in the gas consumption rate, which you should also be aware of. Generally, a grill with a one-inch cooking surface will need 80 to 100 BTUs. We need to multiply 80 gallon of propane with 91,500 BTU: 80 gallon 91,500 BTU per gallon = 7,320,000 BTU. And one gallon is equal to 4.24 pounds. Oops please provide a valid email address, Oops please provide a valid phone number. A heater that produces 80,000 of heat energy. A 420-pound tanks length is 4 feet, and its diameter is about 3 feet. It also gets depleted quite fast and might catch you by surprise when you have hungry guests to feed. So, we can say that there is 23700 BTUs energy in one-liter propane. Why do reviews often begin with an objective summary of the material being reviewed? What was the date of sameul de champlians marriage? Full BTU content is 18,300,000 BTUs; thats enough to provide 10,000 BTU/h for 76 days And 6 hours. Almost any pressurized-type liquid fuel stove will run well on white gas. Natural Gas = 1,000 btu's per cubic foot. Copyright 2017 Southern Maine Renewable Fuels. And the same time amount goes for 5 gallons of the grill. A 20-pound propane cylinder holds approximately 430,000 BTUs of liquid propane. Heating with Corn, Propane, Natural Gas, Electricity. When calculating heating outputs, we needed all the different propane tank sizes to adequately size heating units. All rights reserved. 15 SEER vs 16 SEER Energy Saving Calculator + Chart, Air Conditioner BTU Calculator (With AC BTU For Room Size Chart), 13 SEER vs 15 SEER Energy Savings Calculator + Chart, 13 SEER vs 16 SEER Energy Savings Calculator + Chart, 16 SEER vs 20 SEER Energy Savings Calculator + Chart, How Many CFM Per Square Foot In HVAC? Combustion (heat) values for some fuel gases: Combustion Value Btu/ft. Appliance BTU's are expressed through BTU input ratings and are based on a "per hour" basis. air), Sensible Heat (BTU/hr) = 1.1 x CFM x t (std. Thankfully the furnace doesnt run constantly. 30 pounds = 7.08 gallons. The heating values in units of MJ/kg, are converted from the heating values in units of Btu/lb. A heating value of 91,600 BTU/gal (21,600 BTU/lb) is the commonly accepted value presented by the American Gas Association. per Lb. barbecue Each gallon of propane contains 91,502 BTUs of potential heat and each pound contains approximately 21,548 BTUs. The burn rate varies on the changes of BTUs of the propane tank. How many times did joe biden flunk the bar exam? Tank top heaters consume an average of 30,000 BTU to 45,000 BTU per hour. The login page will open in a new tab. project to record And if you are unlucky, a leakage will drain gas even if the heater is not running! You need to add the weight of 16 lb of propane to the empty weight (13.5 lbs) of the 20 lb propane tank to get the total. In other words, you Tank sizing for heaters is very hard to understand if you are not familiar #5 Fuel: 148,500: Leaking gas is gas that you cant use for heating. Please credit this web page as the Hello & welcome to my blog! both sides. Its total weight when empty is 483 pounds, on average. In this case, over the course of a 30-day month, the generating. There are 91500 BTUs in one gallon of propane gas. tell by looking at the tanks frost line. sources. The fuel consumption in such grills will deviate significantly from the rating if they have active side burners, smoker burners, or rotisseries. pount for 25000 BTU in an hour. A British Thermal Unit (BTU) is the amount of heat energy needed As you see in the chart below, at 0 degree F, you only get 113,000 Btu We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Density, specific heat, thermal conductivity and more. Are Mr. Heaters safe in a tent? For the unit I'm looking at, it's a steady 285 Watts A 100-gallon tank is 5 feet tall and 16 feet tall. But there are some common sizes that is used frequently. The amount for different sizes is given below: 1 pound propane tank contains 21548 BTUs. Lets get to know them. How to make an Infrared Heater more efficient? If you fill it up with 80 lb of propane, it will reach a full weight of 147 pounds. For heatertips.com I research cost-effective heating and air conditioning methods, debunk myths, and explain what really works. The weight of each gallon tank is 4.24 pounds. (Fixed), Whirlpool Dishwasher Buttons Not Working? (+ 2,000 Sq Ft Example), 12 SEER vs 16 SEER Energy Saving Calculator + Chart. The grill with a higher BTU rate will consume more fuel. Multiply the number of gallons of propane by 91,547, which is the number of BTUs in a gallon. 212 pounds, on average. Keep propane cylinders away from flames. You can check this by connecting your heater to the propane tank, and then listening for a hissing sound (without the heater turned on). 207-892-3702 (P), Windham per 100# tank. How much is a 1928 series b red seal five dollar bill worth? The remaining 20% of the volume inside a propane tank is air. The BTU of 100% propane is understood at 21,600 BTU per pound but ONLY if all of it is burnt. The volume of the tank is 400 gallons so that the tank can hold 400 gallons of propane. I (All You Need to Know). cylinders used for camping. Air compresses very well (thats why its used in suspension parts). Mini Split Sizing Calculator: How Many BTU Mini Split Do I Need? This might be due to small leaks that might escape your notice. The Simple Answer. Chemical, physical and thermal properties of propane gas - Fuel from waste products and their heat Which country agreed to give up its claims to the Oregon territory in the Adams-onis treaty? Gas grill burners also come in different sizes, some with larger diameters than others. Making this correction to fairly What specific section of the world do cannibals do not live? Fair Propane Pricing. kicks out 40,000 BTU. Unfortunately, most propane tanks dont come with a gauge to let you know how much fuel is remaining. So 400 gallons (80% allowable liquid in a 500 gallon tank) of LP equals 16 bucks. Here you have to take the tare weight of the empty tank and add the weight of propane. would use 155 KWH more, or $12 in my case. Dimensions of 100 gallon propane tank are 50-inch width (4 feet and 2 inches) and 28-inch diameter (that means 2 feet and 2 inches width and height). A compact propane tank facilitates a safe and easy outdoor cooking method because it can be deployed instantly without the messiness associated with other fuel sources like wood or charcoal. One liter of propane is equal to 0.256 gallons. of 70 Watts. much like a gallon or pound. Likewise, a 100-pound propane tank will use about two million BTUs. This page is a quick This is the sole reason that BTU's are the factor of Here is how you categorize them a bit: You will find a full chart covering all 48 propane tank sizes with average dimensions and tare weights further on. it only comes on for 16% of the time during a 38 degree day, or an You can use this method to stay warm in emergencies and to lower your electricity bill! The Best Ways To Keep Cats Out of Your Yard. WebTo make it a little easier to understand, just figure 75,000 Btu per 100# tank. On the other hand, 1 pound propane is 0.92 liter. Manufacturers like to list the combined BTUs for all the grills because its a more impressive number for selling grills, so you should confirm what your listing represents before you make your estimations. 85,095 btu of coal equals 92 cents. Wells, ME 04090 The primary cooking area alone might have as many as four burners. 250 gallons of propane tank can last for 212 days. any information you relay to others, or link directly to it if you're So just find out what the usage of your product is and the amount of your supply. Thats enough to run a 10,000 BTU/h heater for more than half a year (190 days and 15 hours). I also depend on the temperature of the places. What is the relationship between Commerce and economics? you A disposable 14 or 16 ounce propane tank will last about1.5 to 2 hours. There are 7,320,000 BTU in a 100 gallon propane tank. Because no two propane heaters are equal, I have prepared a long table of all possible BTU ratings and their respective tank capacity (in hours) below. when empty, and it can hold 20 pounds of propane gas. The average cost of propane per gallon was $1.10 per gallon, with butane at $1.13 per gallon, and with isobutane at $1.14 per gallon. Date: January 17, 2022 This Energy Measurement Helps You Compare Fuels Did you know that propane generates a lot more If you have Googled a bit about propane tank sizes, you probably had a similar experience. worst case would be if you kept the corn burner on full bore 24 hours enjoy scientific and engineering projects, I have practical homestead Hathaspace Smart True HEPA Air Purifier Reviews, 4+6 Best Whole-House Dehumidifiers (Ducted, Portable), 4 Quietest Dehumidifiers: Very Silent (52.1 dB Or Lower), check here how much a gallon of propane weighs in detail, check how long does a 100 gallon propane tank last here, full in-depth article about 250-gallon propane tank size here, check how long does 250 gallon propane tank last here, check how long does a 500-gallon propane tank last here, Propane Tank Size Chart (All 48 Standardized Propane Tanks), 100 Gallon Propane Dimensions, Weight, BTUs, 250 Gallon Propane Dimensions, Weight, BTUs, 500 Gallon Propane Dimensions, Weight, BTUs, 20 lb Propane Tank Dimension, Weight, BTUs, 100 lb Propane Tank Dimension, Weight, BTUs, How Long Does A Propane Tank Last? Divide the number of BTUs by 1,000 to convert to KBTU, which might be easier to manage when dealing with large numbers. Molliers don't show BTU. This is enough for a 100 lb propane tank to last for 7 days and 4 hours when powering a 10,000 BTU/h appliance. One pound of propane contains 21548 BTUs. One pound of propane is equal to 0.236 gallons of propane. It represents that one pound of propane has 21548 BTUs of energy. One liter of propane contains 23700 BTUs. One liter of propane is equal to 0.256 gallons. CV link has been copied: paste it anywhere! Lets look at the dimensions: 250 gallon propane cylinder is 7 feet and 8 inches long (92 inches) and has a diameter of 30 inches (width and height are 2 feet and 6 inches). Most of your grilling is not done at the highest temperature setting, which gives an allowance from the BTU listed. Now for the BTU content calculation. electricity is 100% efficient, this corresponds to 54 KWH per day (3413 First, we have to know the BTU of the propane furnace. How many BTU for propane fire pit and fireplace? A standard 1-lb propane tank will typically provide approximately 1 hours of cooking time on high heat. Each tank is 7 feet 8 inches long with a diameter of 30 inches. Lets start with the 3 large residential propane tank sizes: 100 gallon is one of the most common horizontal residential propane tank sizes. 4 months on the payback period. Here are measurements for some standard propane tanks. Do not expose cylinders to heat above 120 degrees. On top of specifying the dimensions and empty weight, we have added: Heres an example for a 100 gallon residential propane tank: You can find the best propane tank sizes, with weight, BTUs, and so on, below the chart. (Quick Answers), Samsung Dishwasher Soap Dispenser Not Opening? auger, as compared to the furnaces digitalon/off and a convection During the heating season, the average home uses between 50 & 150 million Btus of energy. Absolutely not. can take it with you. (40 lb To Gallons), Gas m3 To kWh Calculator: Gas Cubic Meter To kWh Conversion + Chart. The larger home has much A British thermal unit(Btu) is a measure of the heat content of fuels or energy sources. If you want to know what number of BTUs your propane tank can generate, this article is just what you need. How Many BTUs Are in Propane? WebBTU COMPARISON COMMON FuELS per Gal. blower and How much does a full 20 lb propane tank weigh? BTU/hr. So, if you choose to refill a disposable tank, you are using the tank outside of its official certification. Therefore, a propane tank has a lower vaporization rate when the temperatures are low and when the propane level is lower. The BTU Although a crude comparison, BTU's are in essence a measurement of consumption or deliverable power What is poor man and the rich man declamation about? The trick in estimating usage is guessing how often and how long the furnace runs. 250 gallon propane tank is a semi-big size propane tank for home. The volume is fixed to the tanks volume. In the propane (Read This First! (pounds) 12.5008 Coal (anthracite) MBtu (million Btu) 1000 Coal (anthracite) KLbs. WebThe exact number depends on where you live. 366000 BTUs). day. Different amount of propane tank has different sizes, and they are mainly measured in pounds, gallons, and sometimes liters. Can you use an Extension Cord with a Portable Air Conditioner? A 100lb tank lasts for 192 hours on a strong 9,000 BTU/h indoor heater. You can check the full in-depth article about 250-gallon propane tank size here. If the area increases, the BTU also increases on proportionally. Your email address will not be published. So we can calculate that at 60F, 1 gallon of LP gas = (4.20 lbs x 8.66 cuft/lb) = 36 The length of time your 100-pound propane bottle lasts will depend on your fireplace's fuel consumption and how much you use it. BTU per gallon of propane: There are 91500 BTUs in one gallon of propane gas. 4.24 pounds of propane gives about 91500 BTUs. Web0.0093333 Coal (anthracite) Lbs. A 20-pound tank is 18 inches long, and the diameter is 12 inches. How co2 is dissolve in cold drink and why? Until 2009, U.S. spot prices for natural gas and crude oil were closely related, in terms of dollars per million British thermal unit (Btu), and the U.S. spot price for propane generally tracked closely to the spot price for West Texas Intermediate (WTI) crude oil. That is the only truly precise measurement of that specific tanks empty weight. Example 1: How many gallons of propane are in a 100 lb tank? Five hundred gallons of propane tanks include four hundred gallons of propane. Because the propane cant expand inside the tank, the internal pressure increases with increasing temperature. So if you have a 150,000 Btu heater, you should use two Therefore, a 20-pound cylinder can contain 0.65 x 20/2.73= How to make a Portable Air Conditioner more efficient, How to fix a Space Heater not Blowing Hot Air, How to fix an Oil-filled Radiator not getting hot, How to fix a Dyson Heater not Blowing Hot Air, Propane Heater keeps shutting off (7 Fixes), How to fix a Mr. Heater Buddy not lighting, How to fix a Propane Heater using too much gas, How to fix a Space Heater that keeps shutting off, How to fix a Window Air Conditioner not Cooling, How to fix a Portable Air Conditioner not Cooling, Swamp Cooler not Blowing Cold Air (8 Fixes), Evaporative Cooler not turning on (7 Fixes). In the example, 5 gallons of propane would produce 457,735 BTUs of heat energy. So, how long does a 1 lb propane tank last on a gas grill? Surprisingly, the LP Gas industry is The math is quite simple. While a small heater can run for many weeks, a very strong industrial-grade heater will only last one day. A 100-gallon propane tank lasts for 85 days. LP gas is heavier than air, meaning it stays low and wont rise to your nose level, so you might miss the leak. While gas grills with high BTU ratings generate more heat per unit of propane, they also use more gas. It measures gas consumption, not the gas grills output, and can estimate how long the propane tank will last on a gas grill. Once opened, white gas should generally be used within a few months. A BTU is a unit of measurement, WebProduced/Unit (Avg.) Divide this by the BTU per hour rating of your gas grill, and you will be able to fairly approximate the number of hours the tank will last. Large patio heaters are usually 45,000 BTU/h. We have to divide these 91500 BTUs by the BTUs of the furnace to get the consumption rate. You can fill a 100 gallon tank with a maximum of 80 gallons of propane. WebPropane 2% R-402b (HP-8l} 9.50lbs/gal Pentafluoroethane 38% 3.16 73.00 Chlorodifluoromethane 60% 23.10ft3/gal Propane 2% R-404a (HP-62, FX-70} 8.80lbs/gal Pentafluoroethane 44% 3.41 72.63 1,1,1-Trifluoroethane 52% 21.30ft3/gal 1,1,1,2-Tetrafluoroethane 4%