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Theoretical and Experimental Analysis on Multi-Coiled-Spiral Pipe Applied in Condenser and its Application

Author: WangZiKuan
Tutor: XuHong；MaYuLin
School: North China Electric Power University
Course: Power Engineering
Keywords: Energy-saving Condenser Spirally fluted tube
CLC: TK264.11
Type: Master's thesis
Year: 2001
Downloads: 107
Quote: 1
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Abstract


Energy conservation is an effective means to improve resource utilization and reduce environmental pollution . Steam turbine condenser heat exchanger of the key equipment in the power production process , to improve the condition of condensation heat transfer , can greatly improve the utilization of energy . Theory and practice has proved that the condenser heat transfer conditions improve , will enable the turbine condenser vacuum , and every increase 1kPa vacuum thermal efficiency of the unit is increased by about 1% . To improve the heat transfer performance of the condenser heat exchanger components is one of the effective means to improve the condenser vacuum , traditional condenser heat exchanger components ( light tube , single head spiral groove tube) heat exchanger performance study based on the combination of improved process of the spiral groove tube bull spirally fluted tube processing technology , flow characteristics, the full three-dimensional heat transfer characteristics of the computer simulation of the conditions , based on laboratory full-size physical simulation test further in Baotou second thermal power plant condensers field comparison test . Through theoretical analysis, simulation , laboratory simulation experiments and field installed for testing , the following conclusions . 1 ) three spirally fluted tube flow resistance is lower than the single head spiral . 2 ) three spiral tube heat transfer performance best single head spiral tube , followed by , the worst -ray tube . 3 ) three helical coil helix angle increases , so the pipe mechanical properties superior to single - head spirally fluted tube machining deflection control is relatively easy single head tube , three spirally fluted tube processing better performance . 4 ) spiral fluted tube cost about ordinary fluorescent tubes 1.1 times the heat transfer coefficient is about 1.2-1.3 times the ordinary light tube , better cost performance . 5) modified Baotou second thermal power plant 2 to # machine the three spiral groove tube , vacuum end difference to improve the heat transfer coefficient increased by nearly 20 % ( discounted value ) , annual power generation more than 100 million kWh . Baotou No.1 Power Plant 5 to # machine converted three spiral groove tube , vacuum improved 1.3kPa, the crew efficiency of about 1.0% , more than a year generating about 6,000,000 kWh , the energy-saving effect is remarkable .

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CLC: > Industrial Technology > Energy and Power Engineering > Steam Power Engineering > Steam turbine (steam turbine,steam turbine ) > Structure > Cooling system and its devices > Condenser ( condenser )
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