Cordtape Energy Management Systems - Energy Calculator Example Fuel cost per GJ (£) 9.34 Cost of Fuel 0 Operating hours 7056 Oil (£/l) 0.32 Operating temperature °C 70 Gas (p/kWh) 0 Air Temp °C 20 Boiler efficiency 75% Condenser 95% Total saving per Year £16,881.01 Pipe diameter (mm) Length of pipe or number of valves Cost of cover (£) Payback period (years) Heat loss uninsulated (£/Year) Heat loss (insulated) (£/Year) Fluid temp (°C) Air Temp (°C) Insulation Thickness Fluid temp (°C) Air Temp (°C) 50 170 1592 0.4 4233.81 334.84 50mm 70 20 65 56 569.52 0.2 2696.30 171.54 70 0 50mm 70 20 40 92 798.56 0.5 1878.96 159.58 50mm 70 20 32 524 4391.12 0.5 8776.22 783.31 50mm 70 20 25 23 184.46 0.7 309.31 28.69 50mm 70 20 20 28 213.08 0.8 308.80 29.38 50mm 70 20 15 24 176.4 1.0 204.95 20.00 50mm 70 20
Below is an example of a typical building highlighting the cost of un-insulated pipework and demonstrating the reduction in cost after insulation is applied and the total energy saving per year. The calculation also gives you a payback period, so you can see how quickly you will get a return on your investment.