/**
 * Batch Scaling Types
 */
export interface BatchIngredient {
    name: string;
    amount: number;
    unit: string;
}
export interface BatchInput {
    originalBatchSize: number;
    targetBatchSize: number;
    ingredients: BatchIngredient[];
}
export interface ScaledIngredient {
    name: string;
    originalAmount: number;
    scaledAmount: number;
    unit: string;
}
export interface BatchResult {
    scaleFactor: number;
    scaledIngredients: ScaledIngredient[];
}
/**
 * Concentration Conversion Types
 */
export type ConcentrationUnit = 'molPerL' | 'wtPercent' | 'ppm';
export interface ConcentrationInput {
    fromUnit: ConcentrationUnit;
    value: number;
    molecularWeight: number;
    solutionDensity: number;
}
export interface ConcentrationResult {
    molPerL: number;
    wtPercent: number;
    ppm: number;
}
/**
 * Dilution Calculator Types
 */
export type DilutionSolveFor = 'c2' | 'v2' | 'c1' | 'v1';
export type DilutionInput = {
    solveFor: 'c1';
    v1: number;
    c2: number;
    v2: number;
} | {
    solveFor: 'v1';
    c1: number;
    c2: number;
    v2: number;
} | {
    solveFor: 'c2';
    c1: number;
    v1: number;
    v2: number;
} | {
    solveFor: 'v2';
    c1: number;
    v1: number;
    c2: number;
};
export interface DilutionResult {
    c1: number;
    v1: number;
    c2: number;
    v2: number;
    solventToAdd: number;
}
/**
 * pH Buffer Calculator Types
 */
export type BufferSystem = 'acetate' | 'phosphate' | 'tris' | 'citrate' | 'carbonate' | 'custom';
export interface PhInput {
    bufferSystem: BufferSystem;
    acidConcentration: number;
    baseConcentration: number;
    temperature: number;
    customPka?: number;
}
export interface PhResult {
    pH: number;
    pKa: number;
    bufferCapacity: number;
    effectiveRange: {
        min: number;
        max: number;
    };
}
/**
 * Reactor Volume Calculator Types
 */
export type ReactorShape = 'cylindrical' | 'spherical';
interface ReactorBase {
    diameter: number;
    fillRatio: number;
    agitatorType?: 'none' | 'anchor' | 'turbine' | 'propeller';
}
export type ReactorInput = ReactorBase & ({
    shape: 'cylindrical';
    height: number;
} | {
    shape: 'spherical';
});
export interface ReactorResult {
    totalVolume: number;
    workingVolume: number;
    totalVolumeLiters: number;
    workingVolumeLiters: number;
    surfaceArea: number;
    volumeToSurfaceRatio: number;
}
/**
 * Heat Transfer Calculator Types
 */
export type HeatTransferMode = 'conduction' | 'convection' | 'radiation';
export type HeatTransferInput = {
    mode: 'conduction';
    conductivity: number;
    area: number;
    thickness: number;
    tempHot: number;
    tempCold: number;
} | {
    mode: 'convection';
    coefficient: number;
    area: number;
    tempSurface: number;
    tempFluid: number;
} | {
    mode: 'radiation';
    emissivity: number;
    area: number;
    tempHot: number;
    tempCold: number;
};
export interface HeatTransferResult {
    heatRate: number;
    heatFluxDensity: number;
    tempDifference: number;
    thermalResistance: number;
}
/**
 * Pipe Flow Calculator Types (Darcy-Weisbach + Swamee-Jain)
 */
export type PipeMaterial = 'commercialSteel' | 'stainlessSteel' | 'castIron' | 'copper' | 'pvc' | 'concrete' | 'galvanizedSteel' | 'custom';
export interface PipeFlowInput {
    flowRate: number;
    pipeDiameter: number;
    pipeLength: number;
    pipeMaterial: PipeMaterial;
    fluidDensity: number;
    fluidViscosity: number;
    customRoughness?: number;
}
export interface PipeFlowResult {
    velocity: number;
    reynoldsNumber: number;
    flowRegime: 'laminar' | 'transitional' | 'turbulent';
    frictionFactor: number;
    pressureDrop: number;
    pressureDropKpa: number;
    pressureDropBar: number;
    headLoss: number;
}
/**
 * Shelf Life Calculator Types
 */
export interface ShelfLifeInput {
    shelfLifeAtRef: number;
    refTemp: number;
    targetTemp: number;
    q10: number;
}
export interface ShelfLifeResult {
    estimatedShelfLife: number;
    accelerationFactor: number;
    refTemp: number;
    targetTemp: number;
    tempDifference: number;
}
/**
 * Injection Molding Cycle Time Types
 */
export type ResinType = 'abs' | 'pp' | 'pc' | 'pa' | 'pmma' | 'pet' | 'pom' | 'ps' | 'custom';
export interface InjectionCycleInput {
    resin: ResinType;
    wallThickness: number;
    shotWeight: number;
    injectionRate?: number;
    moldOpenCloseTime?: number;
    ejectionTime?: number;
    thermalDiffusivity?: number;
    meltTemp?: number;
    moldTemp?: number;
    ejectionTemp?: number;
    density?: number;
}
export interface InjectionCyclePhase {
    phase: string;
    time: number;
    percentage: number;
}
export interface InjectionCycleResult {
    coolingTime: number;
    fillTime: number;
    packingTime: number;
    moldOpenClose: number;
    ejectionTime: number;
    totalCycleTime: number;
    partsPerHour: number;
    breakdown: InjectionCyclePhase[];
}
/**
 * Control Valve Cv Calculator Types
 */
export interface FlowControlInput {
    flowRate: number;
    inletPressure: number;
    outletPressure: number;
    fluidDensity: number;
    fluidType: 'liquid' | 'gas' | 'steam';
    temperature?: number;
    molecularWeight?: number;
    specificHeatRatio?: number;
}
export interface FlowControlResult {
    cv: number;
    kv: number;
    pressureDrop: number;
    pressureRatio: number;
    isChoked: boolean;
    velocity: number;
}
/**
 * Relief Valve Sizing Types — API 520
 */
export interface ReliefValveInput {
    requiredCapacity: number;
    setPressure: number;
    backPressure: number;
    temperature: number;
    fluidType: 'liquid' | 'gas' | 'steam';
    molecularWeight?: number;
    specificGravity?: number;
    overpressure?: number;
    dischargeCoefficient?: number;
}
export interface ReliefValveResult {
    requiredArea: number;
    selectedOrifice: string;
    orificeArea: number;
    relievingPressure: number;
    capacityAtOrifice: number;
    percentUtilized: number;
    orificeExceedsMax: boolean;
    suggestedMinValves: number;
}
/**
 * PID Tuning Types — Ziegler-Nichols / Cohen-Coon
 */
export interface PidInput {
    method: 'ziegler-nichols-step' | 'ziegler-nichols-ultimate' | 'cohen-coon';
    processGain?: number;
    deadTime?: number;
    timeConstant?: number;
    ultimateGain?: number;
    ultimatePeriod?: number;
    controllerType: 'P' | 'PI' | 'PID';
}
export interface PidResult {
    kp: number;
    ki: number;
    kd: number;
    ti: number;
    td: number;
    method: string;
}
export {};
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