IMPROVEMENT IN PERFORMANCE OF COOLING TOWER OF THERMAL POWER PLANT (original) (raw)

Effciency of cooling tower depending on operating parameters of the power plant cooling system

Technics Technologies Education Management, 2019

Analysis of thermal power plants from the aspect of energy efficiency and their environmental impact is the imperative of the present. Therefore, the operation of the cooling tower, which is a part of the cooling system for technological water in the thermal power plant, is analyzed. The simulation model is based on data from normative testing and project documentation. The aim is to determine the effect of selected inlet parameters on the ef ciency of the cooling tower in the GE Gate Cycle software, via the "design" and "off design" simulation models. The conducted research showed that the analyzed parameters in uence the efficiency of the cooling tower and technological water cooling system. Consequently, simulations and impact analysis were performed with the simultaneous change of more operating parameters. A clearer picture was obtained of the interaction between the observed inlet parameters, thus creating the possibility of increasing the efficiency of the cooling tower and the technological water cooling system as a whole.

Performance Analysis of Cooling Tower in Process Industry

International Journal of Advance Research and Innovative Ideas in Education, 2017

The performance of Cooling Towers is of massive importance for a large number of process industries that must depend upon Cooling Towers as their only means of waste heat rejection. But still, the performances of Cooling Towers have been problematic. Normally they are used to dissipate heat from heat sources to the heat sink. The cooling of hot liquid wastage and process water is required from reuse and environmental point of view. The effectiveness of Cooling Tower relies on flow rates of air and water temperature. In this evaluation of the performance of Cooling Towers the cooling tower located at one of the unit of M/s. Aarti Industries Ltd. The aim is to analyze the performance of Cooling Tower and give the optimum solution that would reduce the monitoring input.

Experimental Study of the Performance of Cooling Tower

Cooling tower is an essential component of air conditioning plant, chemical plant etc. It is used to reduce the temperature of hot water stream by using outside air and thus heat is rejected to atmosphere .This paper includes the working principle of cooling tower and a set up is fabricated and various parameters related to cooling tower is calculated i.e. range, approach, effectiveness and evaporation loss. Validation of practical model is done using empirical relation. Various equations i.e. Modified Apjohn equation, Modified Ferrel equation and Carrier equation are provided. Carrier equation is used for determining vapour pressure and thus humidity ratio and finally which can be used to determine evaporation loss.

Experimental and Analytical Investigation to Improve the Efficiency of Industrial Cooling Tower

Cooling towers make use of evaporation whereby some of the water is evaporated into a moving air stream and subsequently discharged into the atmosphere. As a result, the remainder of the water is cooled down significantly.The process parameters such as inlet air rate, water flow rate and fills porosity have more influence on Thermal performance of cooling tower. The Temperature of outlet water is maintained nearest to inlet air wet bulb temperature to obtain the best Thermal Performance of cooling tower. So current work is to obtain and maintaining outlet water Temperature nearest to inlet air wet bulb temperature. The cooling tower fill is the most critical component in the operation of the cooling tower. The function of the tower fill is to provide a maximum contact surface between the water and the air to promote evaporation and heat transfer. Cooling tower fill accelerates the transfer of heat from circulating water by maximizing the contact area between water and air. So inlet water flow rate, inlet air rate and fill porosity are important factor to maintain the outlet temperature of water nearest to inlet air wet bulb temperature.

PERFORMANCE ANALYSIS AND EFFICIENCY IMPROVEMENT OF COOLING TOWER AT MTPS-I

IRJET, 2022

In thermal power station one of the main part is condenser which cools the hot water. When cooling the hot water, it becomes cold water. The how water temperature is reduced by the cooling tower. When hot water enters into the cross flow induced draft cooling tower and sprayed by the nozzle, so that hot water is converted into cold water. The effective cooling water is depends upon wet bulb temperature, dry bulb temperature, size and height. This project deals with analysis of cooling tower which is one of the deciding factors used for the power plant efficiency.

Analysis Studying For Improving Cooling Tower

Kirkuk University Journal-Scientific Studies, 2016

The present investigation includes a detailed study of the proposed equation for counter flow wet cooling tower using Merkel and Poppe models to show the difference and solutions techniques of the proposed models. A mathematical model has been suggested to construct computer software MATLB R2013 program for simulation of natural draft wet cooling tower for summer (hot and dry) and winter (cold and wet) weather according to Iraqi weather. The fill height changed from (0.2-1.4)m at different water inlet temperature (37 ، 40 ، 45) o C and constant mass flow rate of air .It was found that the range of cooling increases when the fill is high and the cooling range ,relative humidity ,cooling approach ,air temperature change are higher at winter than at summer while the effectiveness and enthalpy change show higher value at summer than winter. Also the mass flow rate of water changed from(1-7.5) kg/s with water inlet temperature 45 o C with constant fill height 1.2 m the result obtained show that tower range ، air temperature change ,are higher in winter than at summer where the enthalpy change and effectiveness show higher values at summer than at winter which matches with the other experimental researches.

A Feasibility Study on the Use of Cooling Towers in Thermal Power Plants Located in Tropical Region

International Journal of Scientific & Engineering Research, 2019

In this work, the feasibility of using cooling towers has been studied theoretically for thermal power plants located in tropical region. Since cooling tower is directly coupled with the condenser of a power plant, the impact of selection of cooling tower on the design of condenser has been assessed. Electrical output of the plant is taken 1200í µí±€í µí±€í µí±€í µí±€ í µí±’í µí±’ and thermal efficiency is taken nearly 60% after superheating, thus around 800í µí±€í µí±€í µí±€í µí±€ í µí±¡í µí±¡ thermal load has been assumed on the condenser. The tertiary coolant water inlet temperature is assumed 28 0 C which is the normal reservoir temperature in tropical regions. Condensers with both single and multiple shell tanks have been studied. Design feasibility was evaluated based on two parameters; tube-side flow velocity and length to shell diameter ratio. From the results, it may be observed that there is no preferable design option for condensers with single shell tank and 2 shell tank, both for with and without cooling tower. For condensers with 3 and 4 shell tanks, multiple preferable design options were obtained. The number of design options is lower for condenser with cooling tower compared to the ones without cooling tower. Also, condenser size is found to be much larger for condensers with cooling towers than without cooling towers. As a result, use of cooling tower is not recommended.

A study of energy efficiency, economic and environmental benefits of a cooling tower

International Journal of Mechanical and Materials Engineering, 2010

Cooling tower is one of the most important utilities in industrial and residential facilities. This paper estimates the energy efficiency, economic and environmental benefits of cooling tower. Energy-saving measures by using the high efficient motors and variable speed drive (VSD) were applied to save energy. By installing VSD in the cooling tower's fans, annual energy saving have been found to be 202,972 kWh and potential emissions reduction is about 120 ton of CO 2, 661 kg of SO 2, 312 kg of NO xand 661 kg of CO at different cooling load. By using high efficient motor, emissions reduction are about 6.97 ton of CO 2, 38,400 kg of SO 2, 18,109 kg of NO x and 4,601 kg of CO at 50 % load. A sizeable amount of utility bill can be saved by using high efficient motors and applying VSDs. Payback periods for different energy savings measures have been estimated and found to be economically viable.

Studies and Experimentation on Cooling Towers: A Review

2015

Cooling tower is one of the important utility in chemical industries. Normally they are used to dissipate heat from heat sources to heat sink. The cooling of hot effluent and process water is required from reuse and environmental point of view. Induced, forced and natural draft cooling towers are used according to the requirements in industries. Natural draft cooling towers use atmospheric air. In forced draft cooling air is forced into the tower using blower. In induced draft cooling towers, air is sucked from other end. The water cooling happens because of humidification of air. The heat lost by water is heat gained by air. Water recirculation is also important aspect in the cooling towers. The effectiveness of cooling tower depends on flow rates of air and water and water temperature. Minimization of heat loss is one of the important aspect of studies carried out by various investigators. The interfacial area between air and water is also crucial factor in cooling towers. Three types of packings used in cooling towers are film, splash and film-grid packings. Also it was observed that drift is one of the important losses in cooling towers. Various shapes of cooling towers are tried by various investigators to study effectiveness. Hyperbolic shape was advantageous due to higher area at bottom. It provides aerodynamics, strength, and stability. The present review is aimed at summarizing studies and research on cooling tower for increasing efficiency and power savings to make it more economical and efficient.

Study the factors on which efficiency of cooling tower can be critically acclaimed (A case Study)

2015

Water cooling is widely used in many industrial processes to control heat removal from a hot material surface. In order to control the temperature distributions, a deeper understanding more accurate estimation of spray heat transfer rates is needed. In a new technique combining experiment and computational modeling developed for water cooling. It is better to understand the heat transfer mechanisms from the combustion gases to the cooling water and then from the cooling water to the environment. To meet this need a logic tree is developed to provide guidance on how to balance and identify problems within cooling system and schedule appropriate maintenance. Fluid dynamics, Thermodynamics and Heat transfer are involved in developing a cooling system model and the operation is familiar to the general operating companies. There will be the comparison and parametric investigation of the cooling system model in the logic tree and the results are summarized as tables and charts. The object...