1. Filip Mojsovski, FFaculty of Mechanical Engineering Skopje, Macedonia
Cooling towers overcome the problem of water supply for thermal power stations in the regions without enough cooling water from natural sources. The thermal capability of cooling tower is conditioned by three parameters: 1. cooling tower range (the temperature difference between the water entering and leaving the cooling tower), 2. entering air state, and 3. water flow rate. One of these parameters, the entering air state, can’t be exactly estimated, it can only be predicted. The basic available solution is to follow the behavior of atmospheric air with the use of climatic curves. Seeking assurance that a cooling tower correctly performs the specified thermal performance, a three step methodology was used for evaluation of cooling tower performance: 1. evaluation of thermal performance at design conditions, 2. evaluation of tolerance between the design thermal performance and the thermal performance at acceptance test, and 3. evaluation of thermal performance at changeable climatic conditions. Its realization is followed through the example of the cooling tower located at the thermal power station in Bitola. Air wet-bulb temperature influence on thermal cooling performance is emphasized. The use of climatic curves is proposed for air state predicting.
Ključne reči :
Tematska oblast:
Energy and Thermal Engineering
Datum:
02.03.2015.
