OFF-LINE COGENERATION PLANT Russian patent published in 2001 - IPC

FIELD: thermal engineering; heat and power supply to stationary and mobile loads. SUBSTANCE: cogeneration plant using internal-combustion or Stirling engine for direct-cycle energy conversion has engine 1 producing useful energy in the course of its running which is converted into electrical energy by means of electric generator 4 mounted on same shaft. Engine 1 is cooled with water supplied to its cooling jacket 3 from peripheral heat loads 8 over return line 9. Heated coolant is partially supplied from cooling jacket 3 to steam generator 5 that accommodates exhaust-gas line 2. High-pressure steam goes from steam generator 5 to steam-water heating pump 6 where it is mixed up with water coming from line 15 to produce high-temperature and high-pressure water. Hence, hot water is delivered at high pressure over line 10 to peripheral heat loads 8 and further circulates through lines 11, 12, 15. Check valve 17 and control valves 13, 16, 20 are provided to control water flow direction and rate in different lines. EFFECT: enhanced efficiency, reduced size and mass of cogeneration plant. 1 dwg