Update project structure and configurations

crates/components/src/heat_exchanger/exchanger.rs

@@ -91,7 +91,7 @@ impl<Model: HeatTransferModel + 'static> HeatExchangerBuilder<Model> {
 ///
 /// let model = LmtdModel::new(5000.0, FlowConfiguration::CounterFlow);
 /// let hx = HeatExchanger::new(model, "Condenser");
-/// assert_eq!(hx.n_equations(), 3);
+/// assert_eq!(hx.n_equations(), 2);
 /// ```
 /// Boundary conditions for one side of the heat exchanger.
 ///
@@ -448,8 +448,8 @@ impl<Model: HeatTransferModel + 'static> HeatExchanger<Model> {
 
     /// Sets calibration factors.
     pub fn set_calib(&mut self, calib: Calib) {
-        self.calib = calib;
         self.model.set_ua_scale(calib.f_ua);
+        self.calib = calib;
     }
 
     /// Creates a fluid state from temperature, pressure, enthalpy, mass flow, and Cp.
@@ -741,6 +741,32 @@ impl<Model: HeatTransferModel + 'static> Component for HeatExchanger<Model> {
             }
         }
     }
+
+    fn set_fluid_backend_from_builder(&mut self, backend: std::sync::Arc<dyn entropyk_fluids::FluidBackend>) {
+        if self.fluid_backend.is_none() {
+            self.fluid_backend = Some(backend);
+        }
+    }
+
+    fn signature(&self) -> String {
+        format!("{}(circuit={})", self.name, self.circuit_id.0)
+    }
+
+    fn to_params(&self) -> crate::ComponentParams {
+        crate::ComponentParams::new(&self.name)
+            .with_param("circuitId", self.circuit_id.0)
+            .with_param("calib", serde_json::to_value(&self.calib).unwrap_or(serde_json::Value::Null))
+    }
+
+    fn update_calib_factor(&mut self, factor: &str, value: f64) -> bool {
+        let mut c = self.calib().clone();
+        if c.set_factor(factor, value) {
+            self.set_calib(c);
+            true
+        } else {
+            false
+        }
+    }
 }
 
 impl<Model: HeatTransferModel + 'static> StateManageable for HeatExchanger<Model> {