return
{
  entities =
  {
    {"heat-pipe", {x = 0.5, y = -1}, {}},
    {"heat-pipe", {x = -0.5, y = -1}, {}},
    {"heat-exchanger", {x = 4, y = 0}, {dir = "east", }},
    {"heat-pipe", {x = -5.5, y = 0}, {}},
    {"heat-pipe", {x = -3.5, y = 1}, {}},
    {"heat-pipe", {x = -4.5, y = 1}, {}},
    {"heat-pipe", {x = -3.5, y = 0}, {}},
    {"heat-pipe", {x = -4.5, y = 0}, {}},
    {"heat-pipe", {x = -2.5, y = 1}, {}},
    {"heat-pipe", {x = -1.5, y = 0}, {}},
    {"heat-pipe", {x = -2.5, y = 0}, {}},
    {"heat-pipe", {x = 0.5, y = 0}, {}},
    {"heat-pipe", {x = -0.5, y = 0}, {}},
    {"heat-pipe", {x = 2.5, y = 0}, {}},
    {"heat-pipe", {x = 1.5, y = 0}, {}},
  },
}