- #1
laurenrose01
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Hi, I'm working for a company that want me to calculate something for them. I haven't done physics since A level so have forgotten a lot of it and am now very stuck!
They want to know the kWh per year they will be saving by reducing their heat loss (which they have given me in watts per meter) through using insulation on pipework.
The inputs they have given me include:
- insulation diameter and thermal conductivity
- pipe diameter and thermal conductivity
- boiler efficiency
- the operating temperature of pipe (same as pipe contents)
- ambient temperature of the room
From this, I need to work out the U-values of uninsulated pipe and insulated pipe, and then work out Q (in Watts/meter) which is the heat loss per meter of pipe.
Through doing this for uninsulated pipe vs insulated pipe, I can see how many watts/meter they are saving through using insulation.
- They want it in watts/meter, and not meter3 apparently.
I then have to use this information to find out how many kWh they are saving in a year.
For example, how would I calculate the kWh annual savings for reducing the heat loss in watts per meter from 130 to 115 W/m?
I can't seem to figure out the spatial element of watts/m to the time element of kilowatts per hour.
Any help would be greatly appreciated!
Thank you in advance!
They want to know the kWh per year they will be saving by reducing their heat loss (which they have given me in watts per meter) through using insulation on pipework.
The inputs they have given me include:
- insulation diameter and thermal conductivity
- pipe diameter and thermal conductivity
- boiler efficiency
- the operating temperature of pipe (same as pipe contents)
- ambient temperature of the room
From this, I need to work out the U-values of uninsulated pipe and insulated pipe, and then work out Q (in Watts/meter) which is the heat loss per meter of pipe.
Through doing this for uninsulated pipe vs insulated pipe, I can see how many watts/meter they are saving through using insulation.
- They want it in watts/meter, and not meter3 apparently.
I then have to use this information to find out how many kWh they are saving in a year.
For example, how would I calculate the kWh annual savings for reducing the heat loss in watts per meter from 130 to 115 W/m?
I can't seem to figure out the spatial element of watts/m to the time element of kilowatts per hour.
Any help would be greatly appreciated!
Thank you in advance!
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