Green Cooling Tower Solutions
 

Problems



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Problems We Address GCT addresses the problem of achieving optimal cooling capacity in a Power Plant or any Industrial Process with our patented “Green” Cooling Tower.  In Power Plants, for example, steam is used to generate electricity. By maximizing cooling capacity, less steam is required to produce a given amount of electricity, thus lowering Power Plant fuel requirements and reducing operating costs. Normally, the only means of increasing cooling capacity is to increase the size of the Cooling Tower by adding cells, which adds operating costs in the form of increased electricity. Also, significant capital investment is required to install additional cells. As capital investment was a major consideration in the original construction of Power Plants, it is often the case that the Cooling Towers are under-sized, and thus generate far from optimum supply water temperature. Therefore, most Power Plants inherently do not operate at optimum efficiency, particularly in the warmer summer months when cooling water temperature is highest. Cooling water flow is used in a shell and tube heat exchanger to condense steam. The lower the cooling water temperature, the lower the steam condensate temperature, and consequently, the lower the steam pressure on the outlet of the turbine. By lowering the pressure of the steam on the outlet of the turbine, or increasing vacuum, more energy is extracted from the steam in the generating turbine. Therefore, a larger quantity of Power can be produced from the same flow of steam. As cooling water temperature rises in summer months, vacuum pressure rises as well, thus reducing the amount of energy derived from the steam across the turbine. The “Green” Cooling Tower technology increases the cooling capacity of an existing Cooling Tower, achieving a reduction in supply water temperature in the range of 3 to 5 deg F during summer months. This translates to an increase of Power Plant efficiency in the range of 1 to 10 %. In many Power Plants, the capacity of the Cooling Tower is the limiting factor relative to plant efficiency and power output capability. Also, most Cooling Towers use a significant amount of electricity to generate air flow used to cool the circulating water which has been heated by the condensing of steam. The flow of water required to condense steam is significantly high, and the pressure of the water must be sufficiently high enough to circulate this high water flow through the plant’s condenser and up to the top of the Cooling Tower, which is normally an elevation of 30 feet or higher. Large Electric motors, often operating in the range of 1000 HP, are used to drive pumps which flow this cooling water from the Cooling Tower basin through the plant, and back to the top of the Cooling Tower. This return water has significant hydraulic energy generating capability at the point on the return header at the base of the Cooling Tower.