Exhaust gas heat exchanger for a cogeneration unit for bus operation or for parallel operation with a heat pump.

摘要

An exhaust gas heat exchanger for a cogeneration plant for the combined operation or the parallel operation with a heat pump is designed for installation in shafts or chimneys (1). The exhaust gas heat exchanger has a central, one-piece exhaust pipe (2) and at least one along the exhaust pipe (2) arranged and standing with the exhaust pipe in heat-conducting contact passage part (3) for passing a heat-absorbing fluid. Furthermore, one of the exhaust pipe (2) by a high heat insulating insulation (5) separated further passage part (4) for the passage of the fluid along the exhaust pipe (2) is arranged. The passage part (3) and the further passage part (4) surround the exhaust pipe (2) each half-shell-like. Furthermore, a cladding tube (6) for receiving electrical lines, which is separated from the exhaust pipe (2) also by the high heat insulating insulation (5), also along the exhaust pipe (2) may be arranged.