scholarly journals Combined thermal storage pond and dry cooling tower waste heat rejection system for solar-thermal steam-electric power plants. Final report

1979 ◽  
Author(s):  
E.C. Guyer ◽  
J.G. Bourne ◽  
D.L. Brownell ◽  
R.M. Rose
2011 ◽  
Vol 133 (04) ◽  
pp. 42-43 ◽  
Author(s):  
Louis Michaud ◽  
Nilton Renno

This article discusses building a prototype of an atmospheric vortex engine (AVE) to increase the thermodynamic efficiency of a thermal plant. An AVE would look like a natural draft cooling tower with a controlled vortex emerging from its open top. An AVE tower could have a diameter of 300 feet and stand 10 to 20 stories tall. To fully demonstrate the AVE concept, however, it is likely necessary to build and test a prototype at an existing thermal power plant. Building the prototypes at existing thermal power plants would be advantageous because of the availability of a controlled heat source of relatively high temperature. Possessing some 20% or 30% of the capacity of the existing cooling tower, the prototype would be able to accept a fraction of the waste heat from the plant. A small gas-fired power plant in a rural location with a dry cooling tower would be a good candidate site for an AVE prototype, since it could be developed without risk to existing plant operation.


Author(s):  
A. Montakhab

Because of its relatively high coolant temperature, the closed cycle gas turbine HTGR is well adapted to dry cooling and its waste heat can be rejected with relatively low cost. The preliminary design of natural-draft dry cooling towers for a 1200 MW(e) GT-HTGR is presented. The effects of air approach velocity, capacity rates of air and water mediums, and number of heat exchanger cross flow passes on salient tower and heat exchanger dimensions are studied. Optimum tower designs are achieved with three cross flow passes for the heat exchanger, resulting in a simultaneous minimization of tower height, heat exchanger surface area and circulating water pumping power. Four alternative tower designs are considered and their relative merits are compared. It is concluded that the 1200 MW(e) plant can be cooled by a single tower design which is well within the present state of the natural-draft dry cooling tower technology. In comparison, the fossil-fired or HTGR steam plants of the same output is shown to need three such towers.


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