Add recirculation pump node with input handling and flow management

2025-06-16 16:53:07 +02:00
parent d0f8ada144
commit 5281696a21
6 changed files with 105 additions and 7 deletions
--- a/additional_nodes/recirculation-pump.js
+++ b/additional_nodes/recirculation-pump.js
@@ -0,0 +1,38 @@
+module.exports = function(RED) {
+    function recirculation(config) {
+        RED.nodes.createNode(this, config);
+        var node = this;
+
+        let name = config.name;
+        let F2 = parseFloat(config.F2);
+        let inlet = parseInt(config.inlet);
+
+        node.on('input', function(msg, send, done) {
+            switch (msg.topic) {
+                case "Fluent":
+                    // conserve volume flow debit
+                    let F1 = msg.payload.F;
+                    let F_diff = Math.max(F1 - F2, 0);
+                    let F2_corr = F1 < F2 ? F1 : F2;
+
+                    let msg_F1 = structuredClone(msg);
+                    msg_F1.payload.F = F_diff;
+
+                    let msg_F2 = structuredClone(msg);
+                    msg_F2.payload.F = F2_corr;
+                    msg_F2.payload.inlet = inlet;
+
+                    send([msg_F1, msg_F2]);
+                    break;
+                default:
+                    console.log("Unknown topic: " + msg.topic);
+            }
+
+            if (done) {
+                done();
+            }
+        });
+
+    }
+    RED.nodes.registerType("recirculation-pump", recirculation);
+};