{
  "schemaVersion": 1,
  "id": "page.thermo-test",
  "lang": "fr",
  "hero": {
    "kicker": "EXPLAINER INTERACTIF",
    "title": "Cycle frigorifique",
    "subtitle": "Compression, condensation, détente, évaporation",
    "meta": "Note de cours · valeurs illustratives"
  },
  "overview": {
    "lead": "Le cycle frigorifique déplace de la chaleur du froid vers le chaud grâce à un travail $W$.",
    "cards": [
      {
        "badge": "PROBLEM",
        "title": "Objectif",
        "body": "Extraire $Q_e$ à basse température.",
        "intent": "warning"
      },
      {
        "badge": "APPROACH",
        "title": "Cycle",
        "body": "Quatre organes en boucle fermée.",
        "intent": "flow"
      },
      {
        "badge": "RESULT",
        "title": "COP",
        "body": "$\\mathrm{COP}=Q_e/W$",
        "intent": "output"
      }
    ]
  },
  "sections": [
    {
      "id": "s1",
      "title": "Le problème",
      "blocks": [
        {
          "type": "prose",
          "md": "On veut **refroidir** un volume en rejetant la chaleur à l’extérieur."
        },
        {
          "type": "callout",
          "kind": "definition",
          "title": "Travail",
          "md": "Le compresseur fournit $W=h_2-h_1$."
        }
      ]
    },
    {
      "id": "s2",
      "title": "Échanges",
      "blocks": [
        {
          "type": "formula",
          "tex": "\\mathrm{COP}=\\frac{Q_e}{W}",
          "caption": "Coefficient de performance"
        },
        {
          "type": "sim",
          "sim": {
            "simId": "ts-diagram"
          },
          "caption": "Le même cycle sur le diagramme T–s : les aires sont les chaleurs échangées."
        }
      ]
    },
    {
      "id": "s3",
      "title": "Isotherme",
      "blocks": [
        {
          "type": "chart",
          "payload": {
            "chartType": "line",
            "series": [
              {
                "id": "p",
                "label": "P(V)",
                "values": [
                  4,
                  2.5,
                  1.8,
                  1.4,
                  1.2
                ],
                "intent": "flow"
              }
            ]
          },
          "caption": "Pression vs volume (illustratif)"
        },
        {
          "type": "demo",
          "caption": "Le cycle à compression de vapeur — 4 organes en boucle fermée.",
          "demo": {
            "schemaVersion": 1,
            "id": "demo.vapor-cycle",
            "lang": "fr",
            "disclaimer": "Schéma pédagogique — valeurs illustratives.",
            "scene": {
              "id": "scene.cycle",
              "panels": [
                {
                  "id": "panel.cycle",
                  "type": "svg-scene",
                  "payload": {
                    "nodes": [
                      {
                        "id": "comp",
                        "label": "1 · Compresseur\n$W = h_2 - h_1$",
                        "intent": "compute"
                      },
                      {
                        "id": "cond",
                        "label": "2 · Condenseur\n$Q_c = h_2 - h_3$",
                        "intent": "output"
                      },
                      {
                        "id": "exp",
                        "label": "3 · Détente\n$h_3 = h_4$",
                        "intent": "flow"
                      },
                      {
                        "id": "evap",
                        "label": "4 · Évaporateur\n$Q_e = h_1 - h_4$",
                        "intent": "cache"
                      },
                      {
                        "id": "work",
                        "label": "Travail fourni $W$",
                        "intent": "highlight"
                      }
                    ],
                    "edges": [
                      {
                        "id": "e12",
                        "from": "comp",
                        "to": "cond",
                        "style": "solid",
                        "intent": "flow"
                      },
                      {
                        "id": "e23",
                        "from": "cond",
                        "to": "exp",
                        "style": "solid",
                        "intent": "flow"
                      },
                      {
                        "id": "e34",
                        "from": "exp",
                        "to": "evap",
                        "style": "solid",
                        "intent": "flow"
                      },
                      {
                        "id": "e41",
                        "from": "evap",
                        "to": "comp",
                        "style": "solid",
                        "intent": "flow"
                      },
                      {
                        "id": "ew",
                        "from": "work",
                        "to": "comp",
                        "style": "dashed",
                        "intent": "highlight"
                      }
                    ]
                  }
                }
              ]
            },
            "acts": [
              {
                "id": "a1",
                "title": "Cycle",
                "pattern": "flowTrace",
                "steps": [
                  {
                    "id": "a1.s1",
                    "speak": "Le compresseur fournit le travail $W$ au fluide.",
                    "pattern": "spotlightTour",
                    "pointTo": [
                      "comp"
                    ],
                    "reveal": [
                      {
                        "ids": [
                          "comp",
                          "work",
                          "ew"
                        ],
                        "scope": "act"
                      }
                    ]
                  },
                  {
                    "id": "a1.s2",
                    "speak": "Au condenseur, la chaleur $Q_c$ est rejetée vers l'extérieur.",
                    "pattern": "spotlightTour",
                    "pointTo": [
                      "cond"
                    ],
                    "reveal": [
                      {
                        "ids": [
                          "cond",
                          "e12"
                        ],
                        "scope": "act"
                      }
                    ]
                  },
                  {
                    "id": "a1.s3",
                    "speak": "La détente est isenthalpique : $h_3 = h_4$.",
                    "pattern": "spotlightTour",
                    "pointTo": [
                      "exp"
                    ],
                    "reveal": [
                      {
                        "ids": [
                          "exp",
                          "e23"
                        ],
                        "scope": "act"
                      }
                    ]
                  },
                  {
                    "id": "a1.s4",
                    "speak": "À l'évaporateur, le fluide absorbe $Q_e$ : c'est le froid utile.",
                    "pattern": "spotlightTour",
                    "pointTo": [
                      "evap"
                    ],
                    "reveal": [
                      {
                        "ids": [
                          "evap",
                          "e34"
                        ],
                        "scope": "act"
                      }
                    ]
                  },
                  {
                    "id": "a1.s5",
                    "speak": "Le cycle se boucle : le fluide retourne au compresseur.",
                    "pattern": "overview",
                    "reveal": [
                      {
                        "ids": [
                          "comp",
                          "cond",
                          "exp",
                          "evap",
                          "work",
                          "e12",
                          "e23",
                          "e34",
                          "e41",
                          "ew"
                        ],
                        "scope": "act"
                      }
                    ]
                  }
                ]
              }
            ]
          }
        },
        {
          "type": "sim",
          "sim": {
            "simId": "carnot-cycle",
            "preset": {
              "t_cold": 260,
              "t_hot": 300,
              "q_cold": 100
            },
            "disclaimer": "Valeurs illustratives — les COP réels sont inférieurs au COP de Carnot."
          },
          "caption": "Manipulez les températures des sources : le COP maximal suit le 2ᵉ principe."
        },
        {
          "type": "sim",
          "sim": {
            "simId": "carnot-cycle-anim"
          },
          "caption": "Le cycle de Carnot battement par battement — piston et diagramme P–V en direct."
        },
        {
          "type": "stats",
          "items": [
            {
              "value": "3.2",
              "label": "COP typique",
              "intent": "output"
            },
            {
              "value": "1.25×",
              "label": "Gain relatif",
              "intent": "highlight"
            },
            {
              "value": "<2%",
              "label": "Pertes",
              "intent": "warning"
            }
          ]
        }
      ]
    },
    {
      "id": "s4",
      "title": "Synthèse",
      "blocks": [
        {
          "type": "table",
          "columns": [
            "Organe",
            "Échange"
          ],
          "rows": [
            [
              "Compresseur",
              "$W$"
            ],
            [
              "Condenseur",
              "$Q_c$"
            ],
            [
              "Évaporateur",
              "$Q_e$"
            ]
          ]
        },
        {
          "type": "prose",
          "md": "Le COP mesure l’efficacité du cycle."
        }
      ]
    }
  ],
  "footer": "Valeurs pédagogiques — pas des mesures expérimentales."
}