HVAC Ice Storage Screening ToolScreening
Feasibility-grade analysis for thermal energy storage load-shifting · v0.1.6
Screening-grade only. Outputs are feasibility estimates based on a single design-day analysis. For procurement-grade design, consult a qualified HVAC engineer with full-year energy simulation and detailed chiller plant model. This tool does not model ice formation kinetics (Stefan moving boundary), multi-day storage cycle, or building thermal mass.
1Cooling load
RT
1 RT ≈ 3.517 kW thermal
—
Typical office: 0.50–0.65
h
0–23, time of max load
h
Typical restaurant/mini-hotel: 08:00
h
Outside this window, load is reduced/zero
frac
0 = AC off from 00:00–08:00
2Electricity tariff (time-of-use)
$/kWh
Peak hours: 18:00–23:00 (VN approx. 17:30–22:30)
$/kWh
06:00–18:00, 23:00–24:00
$/kWh
00:00–06:00
$/kW/mo
days
3Chiller specification
—
At T_evap = 6.7 °C (LCHW 44 °F)
—
T_evap = −6 °C (LGlycol 21 °F)
—
Typical 0.65–0.75
frac
≈3 % of discharge load
frac
Tank standby + heat gain
4Storage strategy
h
Chiller makes ice
h
h
Ice supplies cooling
h
5Results
Configure inputs above and click Compute to see screening results.