Computer optimization of the MIT advanced wet/dry cooling tower concept for power plants

Technical Report · Sat Sep 01 00:00:00 EDT 1979

OSTI ID:6309040

Choi, M; Glicksman, L R

Our previous study on the combination of separate dry and wet cooling towers indicated that wet-dry cooling is an economical choice over all-dry cooling when some water is available but the supply is insufficient for an evaporative tower. An advanced wet-dry cooling tower concept was experimentally studied at MIT's Heat Transfer Laboratory and a computer model was developed for predicting the performance of this cooling concept. This study has determined the cost of the cross-flow type of this cooling concept in conjunction with steam electrical power plants. Aluminum is found to be economically preferable to galvanized steel as the cooling plate material. In our base case study using aluminum plates for a 1094 MWe nuclear plant at Middletown, the MIT advanced cooling concept is comparable to conventional wet-dry towers at water makeups larger than 45% and is slightly more economical at makeup larger than 50%. The incremental costs over the power production cost, 32.3 mills/kWhr, of zero condenser system are 14, 13 and 12% for makeups of 45, 60 and 55%, respectively. For an 800 MWe fossil plant at Moline, this cooling concept is more economical than conventional wet-dry towers at water makeups larger than 27%. The incremental costs over 20.8 mills/kWhr of zero condenser system are 12.2 and 10.6% for makeups of 37 and 50%, respectively. For these two makeups, going from conventional wet-dry to MIT advanced concept results in 13 and 21%, respectively, savings in the incremental cost. When the water makeup exceeds 30%, the MIT advanced wet-dry concept is preferable to conventional wet-dry towers for a 1200 MWe nuclear plant at Moline, Ill. The incremental costs over zero condenser system of 21.1 mills/kWhr are 12.8 and 11.5% for makeups of 40 and 50%, respectively. Using the MIT advanced concept instead of conventional wet-dry towers results in 28 and 33% reduction of incremental power production cost for these two makeups, respectively.

• Research Organization: Massachusetts Inst. of Tech., Cambridge (USA). Dept. of Mechanical Engineering
• DOE Contract Number: AS02-76EV04114
• OSTI ID: 6309040
• Report Number(s): MIT-EL-79-035; ON: DE81029647
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
COOLING TOWERS
ECONOMIC ANALYSIS
OPTIMIZATION
PERFORMANCE
THERMAL POWER PLANTS
COMPUTERIZED SIMULATION
COST
OPERATION
WATER RESOURCES
ECONOMICS
MECHANICAL STRUCTURES
POWER PLANTS
RESOURCES
SIMULATION
TOWERS
200101* - Fossil-Fueled Power Plants- Cooling & Heat Transfer Equipment & Systems