Ship Universe Naval Engineering Tool

Naval Chilled Water Plant Load, Cooling Margin & Redundancy Tool

Estimate coincident chilled-water demand, future design load, required flow, online chiller loading, reserve margin, largest-unit-loss capability, N+1 redundancy, casualty cooling shortfall, thermal-storage endurance and plant electrical demand. Advanced mode models individual ship cooling loads and chiller units.

Cooling Load Accommodation, combat electronics, propulsion auxiliaries, mission systems and ship services
Redundancy Online loading, reserve margin, largest-unit loss, N+1 and post-casualty load shedding
Plant Demand Chilled-water flow, chiller electrical demand, auxiliary power and optional thermal-storage endurance

Ship Cooling Loads

Enter representative coincident thermal loads in kW of cooling. The coincidence factor below is applied to the total entered load.

kW cooling
kW cooling
kW cooling
kW cooling
kW cooling
kW cooling
%
%

Chilled-Water Distribution

°C
°C
kW electric

Chiller Plant Configuration

chillers
chillers
kW cooling
% rated
Cooling kW divided by compressor electrical kW.
%
% design load

Casualty Load Priorities

Used only to estimate a theoretical shedding sequence after a chiller casualty. These percentages are planning assumptions, not naval doctrine.

%
%

Optional Thermal Storage

MWh cooling
kW cooling

Individual Cooling Loads

Add major cooling consumers individually and assign coincidence and casualty priority. Only rows marked Included are used.

Cooling Load Thermal kW Coincidence % Priority Included

Individual Chillers

Available capacity equals rated cooling × entered availability. Chillers marked Available but not Online are treated as standby units.

Chiller Rated kW Available % COP Available Online

Plant Design Criteria

%
%
% design load

Chilled-Water Distribution & Electrical Load

°C
°C
kW electric
MWh cooling
kW cooling

Naval Chilled-Water Plant Results

Aggregate cooling-load model

Enter plant data
Enter ship cooling loads, chiller capacities and redundancy assumptions to estimate plant margin, flow, electrical demand and casualty performance.
Engineering planning estimate only. This tool is not an approved naval electrical load analysis, chilled-water balance, HVAC design, machinery-control analysis or survivability study. Actual chilled-water demand depends on environmental conditions, seawater temperature, equipment duty cycle, combat-system operating state, heat rejection, ventilation mode, compartment conditions, fouling, condenser performance, refrigerant condition, pump curves, valve position, hydraulic balance and plant control logic. Redundancy requirements, casualty loading priorities and mission-critical cooling criteria are vessel-specific. Thermal storage calculations are simplified and do not account for heat exchanger limits, stratification, minimum temperature, tank mixing or control response. Validate final equipment sizing, piping, pumps, controls, electrical loads, fault cases and redundancy with vessel-specific engineering studies and approved design criteria.
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