A 10-kilowatt heater produces 34,120 BTUs per hour.
One MCF (thousand cubic feet) of natural gas is equivalent to approximately 10 therms.
Depends on the waatage of the immersion heater. Read the name plate details of the heater - it shows the wattage of the heater. Assuming the wattage is 1KW (1000Watt) the KHW will be 1KHW if you use the heater for 1 hour.
The heater uses 1000 watts of power at every instant it is running. If it runs for 1 hour, it uses 1000 watt-hours of energy. That is called a kilowatt-hour or a Unit. So it it uses 1 kilowatt-hour per hour.
A 3000 W water heater is 3 kW water heater. For 30 minutes of operation it would be 3 kW multiplied by 0.5 hours, or 1.5 kWh. One kWh is equal to 3,600,000 Joules, the water heater uses 1.5 times 3,600,000 J, or 5,400,000 J.
110 therms.
There are 0.00001 therms in 1 BTU.
1 million BTU = 10 Therms
The word deca- means ten, so there are ten therms in a decatherm.
The answer depends on the material. The number of therms in liquid nitrogen is pretty close to 0.
10
There are 1 therm in every 1 ccf of natural gas. Therefore, 100 ccf of natural gas is equal to 100 therms.
A 10-kilowatt heater produces 34,120 BTUs per hour.
One MCF (thousand cubic feet) of natural gas is equivalent to approximately 10 therms.
Your gas pool heater should have a BTU/hr rating for input and output printed on a placard somewhere on the heater. Look for the input rating and divide by 100,000 to get Therms/hr. Assuming your gas is being billed in dollars per Therm, just multiply that rate by your Therms/hr. to get dollars/hour. Multiply this by how many hours you run your gas heater and that's your total pool heater operating cost. Also take in account the time of year temp and wind. If your heating your pool to 78-85 degrees and your pool water is 60 degrees that would be an 18-25 degree temp rise. Your pool is exposed on all sides and this will bleed heat off quickly. It may never achieve the temp desired or not shut down and always call for heat.
Eleven
Depends on the waatage of the immersion heater. Read the name plate details of the heater - it shows the wattage of the heater. Assuming the wattage is 1KW (1000Watt) the KHW will be 1KHW if you use the heater for 1 hour.