Enter connected electrical load by major galley category. Simple mode
applies the same normal and peak demand factors across these categories.
kW
kW
kW
kW
kW
kW
%
%
%
Applied after the peak demand factor to reflect simultaneous equipment use.
Galley Steam Demand
kg/h
kg/h
kg/h
%
%
%
%
kWh/kg
User-entered thermal energy value for steam delivered to the galley system.
Steam Generation & Electrical Coupling
Enter 0% electrical steam share when galley steam is supplied entirely
by a central steam system or fuel-fired boiler. Increase the share for
electric steam generators or electric boilers.
%
%
Operating Profile
hours/day
hours/day
meals/day
Electrical & Steam Capacity
kW
Enter 0 to disable the electrical capacity screen.
%
kg/h
Enter 0 to disable the steam-capacity screen.
%
Galley Equipment Groups
Model each major equipment group with quantity, electrical rating,
normal and peak electrical demand, and optional steam demand.
Equipment Group
Qty
kW / Unit
Normal Elec %
Peak Elec %
Steam kg/h / Unit
Normal Steam %
Peak Steam %
Coincidence & Steam Assumptions
%
%
%
kWh/kg
%
%
Operating Profile
hours/day
hours/day
meals/day
Capacity Targets
kW
%
kg/h
%
Galley Electrical & Steam Results
Aggregate galley-load model
Enter galley data
Enter galley equipment, steam, operating-profile and capacity assumptions
to estimate normal load, peak demand and utility-system margin.
Peak Galley Electrical Demand
N/A
Direct galley electrical demand plus electrically generated steam
Peak Steam Demand
N/A
Modeled galley steam demand including entered system allowance
Connected Electrical Load
N/A
Normal Direct Electrical Load
N/A
Peak Direct Electrical Load
N/A
Peak Electrical Steam Load
N/A
Electrical Capacity Margin
N/A
Electrical Capacity Utilization
N/A
Required Capacity With Reserve
N/A
Electrical Reserve Gap
N/A
Rated Steam Demand
N/A
Normal Steam Demand
N/A
Steam Header Margin
N/A
Steam Header Utilization
N/A
Daily Galley Electricity
N/A
Daily Steam Consumption
N/A
Electricity per Meal
N/A
Steam per Meal
N/A
Average Operating Electrical Load
N/A
Peak / Connected Electrical Ratio
N/A
Equipment Group Results
Advanced mode
Equipment Group
Connected kW
Normal Elec
Peak Elec
Rated Steam
Normal Steam
Peak Steam
Electrical Peak-Demand Screen
Steam & Operating Profile
Peak Load Composition
Direct Electrical Peak
Peak Steam Demand
Peak Demand Sensitivity
Direct electrical peak vs electric steam share
Direct Peak \ Electric Steam
-25 pts
Base
+25 pts
Model approach:
direct electrical demand equals connected electrical load multiplied
by entered normal or peak demand factors. Peak direct demand is then
multiplied by the entered peak coincidence factor. Steam demand is
calculated from equipment steam ratings and normal or peak steam
demand factors, with peak coincidence and the entered distribution
allowance applied. Electrically generated steam adds electrical load
based on steam kg/h × entered kWh/kg divided by steam-generator
efficiency. Daily energy uses a two-state operating profile consisting
of entered peak hours and remaining normal operating hours.
Planning estimate only.
Actual cruise-ship galley electrical and steam demand varies with ship
size, number of venues, meal schedule, passenger count, crew service,
equipment type, equipment cycling, simultaneous cooking, refrigeration
compressor operation, exhaust-system controls, dishwasher cycles, steam
pressure, condensate return, boiler configuration, hot-water system,
electric steam generation and operating practice. Connected electrical
load is not the same as measured maximum demand. This tool does not model
motor-starting current, harmonic distortion, short-circuit duty, feeder
protection, voltage drop, generator transient response, breaker
coordination, steam pressure drop or boiler dynamic response. Daily
consumption uses a simplified normal-load and peak-load schedule rather
than a time-series galley profile. Validate final electrical feeders,
switchboards, steam piping, boiler capacity and hotel-load planning with
measured vessel data, equipment schedules and approved engineering
calculations.
