Electricity to charge ice storage calculator

Charging COP must refer to net cooling placed in storage, including the losses specified in that boundary. The coefficients convert ton-hours to Btu and Btu to kWh.

Units

E_{\text{in}} = \frac{12{,}000 \times C}{3412 \times \mathrm{COP}_{\text{ch}}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Worked example

Given

$C$ = 420 ton·h
$\mathrm{COP}_{\text{ch}}$ = 3.1 ratio

E_{\text{in}} = \frac{12{,}000 \times 420}{3412 \times 3.1} \approx 476.5

Symbols and units

Symbol	Meaning	Unit
$E_{\text{in}}$	charging electricity	kWh
$C$	net stored cooling energy	ton·h
$\mathrm{COP}_{\text{ch}}$	charging cooling COP on net-storage basis	ratio

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Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.