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136 lines
5.9 KiB
136 lines
5.9 KiB
using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Text; |
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using UnityEngine; |
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namespace Chiller |
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{ |
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public class ModuleChiller : PartModule |
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{ |
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/// <summary> |
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/// Maximum electric power this Chiller unit can draw, in KSP Electric Charge per second. Since this mod assumes 1 EC = 1 kW.s, the value indicated here can be considered to be in kilowatts. |
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/// </summary> |
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[KSPField(isPersistant = false, guiActive = false)] |
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public float MaxPower = 10; |
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/// <summary> |
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/// Coefficient Of Performance (heat removed from the chilled part, divided by the electric power consumed) |
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/// Note that the electric power also ends up heating the radiator panel (in addition to the heat taken from the cooled part) |
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/// </summary> |
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[KSPField(isPersistant = false, guiActive = false)] |
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public float COP = 4; |
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/// <summary> |
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/// Target temperature for the part on which the Chiller is attached, in Kelvins. If the temperature of that part is above the set-point, the Chiller turns on to cool it. |
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/// </summary> |
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[KSPField(isPersistant=true, guiActive=true, guiName="Set-point (K)")] |
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[UI_FloatRange(minValue = 10, maxValue = 400)] |
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public float SetPoint = 100; |
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[KSPField(isPersistant = false, guiActive = false)] |
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public float SetPointThreshold = 5; |
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[KSPField(isPersistant = false, guiActive = true)] |
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public string Status = "Offline"; |
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[KSPField(isPersistant = false, guiActive = true, guiName="Heat transfer")] |
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public string HeatTransferStatus = "Offline"; |
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[KSPField(isPersistant = false, guiActive = true, guiName = "Temperature")] |
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public string CurrentTemperature = ""; |
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[KSPField(isPersistant = false, guiActive = true, guiName = "Electric consumption")] |
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public string ElectricStatus = ""; |
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private bool WasCooling = false; |
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private float CurrentHeatTransfer = 0; |
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public void FixedUpdate() |
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{ |
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var cooledPart = part.parent; |
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bool isActive = part.FindModuleImplementing<ModuleActiveRadiator>().IsCooling; |
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Status = "Stand-by"; |
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CurrentTemperature = cooledPart.temperature.ToString("0.00") + " K"; |
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ElectricStatus = ""; |
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bool cooling = false; |
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float energyToTransfer = 0; |
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if (isActive) |
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{ |
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if (cooledPart.temperature > SetPoint + (WasCooling ? 0 : SetPointThreshold)) |
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{ |
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float maxRadiatorTemperature = (float)part.maxTemp * (float)part.radiatorHeadroom; |
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if ((float)part.temperature >= maxRadiatorTemperature - (WasCooling ? 0 : SetPointThreshold)) |
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{ |
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Status = "Radiator too hot"; |
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} |
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else |
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{ |
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float neededCoolingEnergy = ((float)cooledPart.temperature - SetPoint) * (float)cooledPart.thermalMass / TimeWarp.fixedDeltaTime; |
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float availableHeatEnergy = (maxRadiatorTemperature - (float)part.temperature) * (float)part.thermalMass * (COP / (COP + 1)) / TimeWarp.fixedDeltaTime; |
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energyToTransfer = Mathf.Min(neededCoolingEnergy, availableHeatEnergy, MaxPower * COP); |
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} |
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} |
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} |
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else |
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{ |
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Status = "Off"; |
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} |
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if (energyToTransfer > CurrentHeatTransfer) |
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{ |
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// slow transfer startup, to simulate progressive refrigerant compression as the pump is started |
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float c = 1.0f / (1.0f + TimeWarp.fixedDeltaTime); |
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CurrentHeatTransfer = CurrentHeatTransfer * c + energyToTransfer * (1.0f - c); |
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} |
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else |
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{ |
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// immediate reactivity when slowing down to avoid overshooting |
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CurrentHeatTransfer = energyToTransfer; |
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} |
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if(energyToTransfer > 0) |
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{ |
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float requiredElectricCharge = CurrentHeatTransfer * TimeWarp.fixedDeltaTime / COP; |
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var electricCharge = vessel.GetActiveResources().SingleOrDefault(r => r.info.name == "ElectricCharge"); |
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float totalAvailableElectricEnergy = electricCharge == null ? 0.0f : (float)electricCharge.amount; |
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// we don't use electric charge at all if battery is low, to avoid disabling more critical systems, such as command modules etc. |
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float electricChargeMargin = 10; |
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float availableElectricEnergy; |
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if (totalAvailableElectricEnergy > requiredElectricCharge + electricChargeMargin) |
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{ |
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availableElectricEnergy = part.RequestResource(electricCharge.info.id, Math.Min(requiredElectricCharge, totalAvailableElectricEnergy - electricChargeMargin)); |
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} |
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else |
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{ |
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availableElectricEnergy = 0; |
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} |
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if (availableElectricEnergy < requiredElectricCharge * 0.9f) |
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{ |
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Status = "Not enough power"; |
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CurrentHeatTransfer = availableElectricEnergy * COP; |
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} |
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else |
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{ |
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Status = "Cooling"; |
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} |
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cooledPart.AddThermalFlux(-CurrentHeatTransfer * 2); |
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part.AddThermalFlux(CurrentHeatTransfer * 2 * (COP + 1) / COP); |
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ElectricStatus = availableElectricEnergy.ToString("0.00") + " kW"; |
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cooling = true; |
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} |
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HeatTransferStatus = CurrentHeatTransfer.ToString("0.00") + " kW (" + (CurrentHeatTransfer / (float)cooledPart.thermalMass).ToString("0.00") + " K/s)"; |
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WasCooling = cooling; |
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} |
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} |
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}
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