85 lines
1.8 KiB
Python
85 lines
1.8 KiB
Python
from abc import ABC, abstractmethod
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from dataclasses import dataclass
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@dataclass
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class Layer:
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thermal_coefficient: float
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thickness: float
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@property
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def R(self):
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return self.thickness / self.thermal_coefficient
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class Interface(ABC):
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@property
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@abstractmethod
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def HT(self) -> float: ...
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class Surface(Interface):
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def __init__(self, name: str, area: float):
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self.name = name
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self.area = area
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@property
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@abstractmethod
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def U(self) -> float: ...
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@property
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def HT(self) -> float:
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return self.U * self.area
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class LinearThermalBridge(Interface):
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def __init__(self, name: str, length: float, psi: float):
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self.name = name
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self.length = length
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self.psi = psi
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@property
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def HT(self) -> float:
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return self.psi * self.length
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class PointThermalBridge(Interface):
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def __init__(self, name: str, chi: float):
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self.name = name
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self.chi = chi
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@property
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def HT(self) -> float:
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return self.chi
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class LayeredSurface(Surface):
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def __init__(
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self,
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name: str,
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area: float,
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layers: list[Layer],
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r_surface_1: float,
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r_surface_2: float,
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):
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super().__init__(name, area)
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self.layers = layers
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self.r_surface_1 = r_surface_1
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self.r_surface_2 = r_surface_2
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@property
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def U(self) -> float:
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R_layers = sum(layer.R for layer in self.layers)
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R = self.r_surface_1 + R_layers + self.r_surface_2
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return 1 / R
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class FixedUSurface(Surface):
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def __init__(self, name: str, area: float, u_value: float):
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super().__init__(name, area)
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self.u_value = u_value
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@property
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def U(self) -> float:
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return self.u_value
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