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{Sigh} I hate English units.
A BTU is defined as the amount of heat required to raise the temperature of 1 lb of water by 1 deg F.
The basic relation is
Q = mcdT
Heat = mass * heat capacity * change in temperature.
A gallon of water weighs about 8 lb, so you're talking about 500,000 gal * 8 lb/gal = 4 million pounds.
The constant c for water, by the definition given above is 1 Btu/lb-deg F.
So
Q = 4 million pounds * 1 Btu/lb-degF * 32 deg F = 128 million BTU
Note: 500,000 gal should be changed to 1250 gal or 3.2 million BTU?
What else can I help you with?
How long to heat up 50 gallon water heater after filling it?
Usually about an hour.
How long does it take a 50 gallon gas water heater to heat up?
Around 3 hours
What size BTU pool heater to heat a 10000 gallon above ground pool?
130000 btu
What causes oil to mix with the water in an inground heated swimming pool?
Do you have a pool heater? The oil could be "white oil," a refined mineral oil. Indicates a problem with the heat exchanger. Your heater doesn't need to be running for this problem to occur.
What are the benefits of upgrading to an 80 gallon heat pump water heater for a residential property?
Upgrading to an 80-gallon heat pump water heater for a residential property can provide benefits such as increased energy efficiency, lower operating costs, and a larger supply of hot water for household use.
How much propane is used to heat a 50 gallon water heater from 75 degrees to 105 degrees?
The amount of propane needed to heat a 50 gallon water heater from 75 degrees to 105 degrees would depend on factors such as the efficiency of the water heater, the starting temperature of the water, and the ambient temperature. It is difficult to provide an exact amount without this information.
What are inground heat pumps?
GEO - thermal system.
What are the benefits of upgrading to a 50 gallon heat pump water heater for residential use?
Upgrading to a 50-gallon heat pump water heater for residential use can provide benefits such as energy efficiency, cost savings on utility bills, longer lifespan compared to traditional water heaters, and environmentally friendly operation.
How long does it a fish tank heater tank to heat the tank?
It all depends on how much the tank holds and the wattage of your heater I like to have 10 wattage for ever gallon so if you hVe a ten gallon tan you need a 100 watt heater also the temperature of you want will make a deference normally my 20 gallon tank can go from 46F to about 77 F in two hours
How long does it take a 40 gallon gas water heater to heat up?
A 40-gallon gas water heater typically takes about 30 to 40 minutes to heat water from a cold start to the desired temperature. However, the exact time can vary based on factors like the initial water temperature, the heater's BTU rating, and the efficiency of the unit. Some models may heat water faster, while others may take longer.
Gas cost to heat one gallon of water?
The cost to heat one gallon of water depends on the efficiency of the water heater, the cost of natural gas, and the temperature increase needed. On average, it can cost around 25-35 cents to heat one gallon of water using natural gas.
How long does it take a 50 gallon electric water heater to heat up?
It typically takes about 1-2 hours for a 50-gallon electric water heater to heat up from cold to the desired temperature. However, factors such as incoming water temperature, thermostat setting, and efficiency of the heater can affect the heating time.
