EcoRenovator - View Single Post - Low cost DIY AC/fridge duty cycle and dryer and water heater kWh estimator

ICanHas · 09-02-14, 02:06 AM

Read first, then post. Post #3 clearly addresses that.

1.) The GE meter shown in the aforementioned post is a certified revenue grade meter. It has the ability to log the amount of energy passed through in the form of kilowatt-hrs.

2.) kWh is defined as the 3.6MJ, which is derived by the fact that 1kW = 1kJ per second and running that load for one hour which is equal 3,600 seconds adds up to 3,600kJ or 3.6MJ.

It can be concluded that by writing down the starting date and time, the kWh reading, then dividing the accumulated kWh by elapsed time in seconds it will give you the "average watt"

The duty cycle(the percentage of time it runs during the duration of test) is a useful indicator in estimating roughly how much of the AC's capacity is used. I never said that it will estimate kWh of an AC unit.

I said that it will measure the duty cycle of anything, and it will ESTIMATE the kWh of water heater or electric furnaces by measuring the exact duration of usage. It's not a revenue grade or energy performance certification laboratory grade instrumentation.

09-02-14, 02:06 AM	#5
ICanHas Banned Join Date: Aug 2014 Location: US Posts: 150 Thanks: 7 Thanked 5 Times in 5 Posts	Read first, then post. Post #3 clearly addresses that. 1.) The GE meter shown in the aforementioned post is a certified revenue grade meter. It has the ability to log the amount of energy passed through in the form of kilowatt-hrs. 2.) kWh is defined as the 3.6MJ, which is derived by the fact that 1kW = 1kJ per second and running that load for one hour which is equal 3,600 seconds adds up to 3,600kJ or 3.6MJ. It can be concluded that by writing down the starting date and time, the kWh reading, then dividing the accumulated kWh by elapsed time in seconds it will give you the "average watt" The duty cycle(the percentage of time it runs during the duration of test) is a useful indicator in estimating roughly how much of the AC's capacity is used. I never said that it will estimate kWh of an AC unit. I said that it will measure the duty cycle of anything, and it will ESTIMATE the kWh of water heater or electric furnaces by measuring the exact duration of usage. It's not a revenue grade or energy performance certification laboratory grade instrumentation. Last edited by ICanHas; 09-02-14 at 02:12 AM..