Thermal Calculation for Water Cooling Tower To Cool Compressor ATLAS COPCO GA 250 FF

2019 ◽  
Vol 3 (1) ◽  
pp. 193-200
Author(s):  
Yudha Khosala
Keyword(s):  
Oil And Gas ◽  
Cooling Tower ◽  
Air Flow ◽  
Industrial Process ◽  
Cooling Capacity ◽  
Thermal Capacity ◽  
Thermal Calculation ◽  
Water Cooling ◽  
Counter Flow ◽  
Algebraic Formula

The aim of this paper is to choose the correct capacity of Thermal Calculation for Water Cooling Tower to Cool Compressor ATLAS COPCO GA 250 FF since a cooling tower is considered as an essential component for a compressor in an oil and gas pipe manufacture plant. Cooling tower is an equipment device commonly used to dissipate heat from air conditioning, water-cooled refrigeration, power generation units, and industrial process. In this paper, we use a induced draft counter flow tower for the design of cooling tower which based on Merkel’s method. The tower characteristic is determined by Merkel’s method. A simple algebraic formula is used to calculate the optimum water and air flow rate. This paper calculate the cooling tower characteristic, air flow required, efficiency, effectiveness, and cooling capacity of cooling tower need to cool the compressor compare with the availability cooling tower product in the market. In this paper, we will design based on calculation thermal capacity which lead to decentralizing the cooling tower to reach better energy efficiency of the plant.

scholarly journals Heat Calculations of Water Cooling Tower

2021 ◽  
pp. 173-176
Author(s):  
Abdulkhaev Zokhidjon Erkinjonovich ◽  
Madraximov Mamadali Mamadaliyevich ◽  
Abdurazaqov Axmadullo Muxammadovich ◽  
Shoyev Mardon Axmadjon o’g’li
Keyword(s):  
Relative Humidity ◽  
Flow Rate ◽  
Energy Efficient ◽  
Cooling Tower ◽  
Air Flow ◽  
Aerodynamic Resistance ◽  
Thermal Calculation ◽  
Water Cooling ◽  
Air Flow Rate ◽  
Resistance Thermometer

Annotation: The article discusses the thermal calculation of the cooling tower. In the calculation, the specific air flow rate, the number of sections and the structural size of the tower are determined, according to the calculated value, energy-efficient methods are determined. Keywords: cooling tower, fan, specific air enthalpy, diagram I-d, relative humidity, aerodynamic resistance, thermometer. Аннотация: В статья рассмотрено тепловая расчёт градирня. В расчёта определено удельная расход воздуха, число секция и конструктивный размер градирня, по вычисленных величина определяется энергоэффективный методы. Ключевые слова: градирня, вентилятор, удельная энтальпия воздуха, диаграмма I-d, относительная влажность, аэродинамическое сопротивление, термометр.

scholarly journals Analisa Kebutuhan Make Up Water Cooling Tower RSG-GAS pada Daya 30 MW Setelah Revitalisasi

2020 ◽  
Vol 17 (1) ◽  
pp. 38
Author(s):  
Pranto Busono ◽  
Santosa Pujiarta
Keyword(s):  
Cooling Tower ◽  
Water Cooling ◽  
Counter Flow ◽  
Evaporation Loss

Akibat kondisi dan usia dari cooling tower RSG-GAS maka telah dilakukan revitalisasi pada cooling tower tersebut. Cooling tower yang baru mempunyai tipe sama dengan tipe sebelumnya, yaitu tipe Mechanical induced draft, counter flow, Inline, Closed end. Akibat penggantian/revitalisasi cooling tower RSG-GAS maka perlu dilakukan kajian yang berkaitan dengan besarnya kehilangan air. Kehilangan air pada cooling tower terdiri atas: evaporation loss (We), Drift loss (Wd) dan blowdown (Wb). Besarnya kehilangan air berdasarkan desain 93,8074 m3/h, hasil perhitungan 53,1286 m3/h dan hasil pengamatan adalah sebesarnya 39,4548 m3/h. Kehilangan air pada cooling tower perlu dilakukan perhitungan karena berkaitan dengan kemampuan pompa PA-04 dalam mengkompensasi kehilangan air tersebut. Dengan kemampuan pompa PA-04 yang mempunyai kapasitas 100 m3/h, maka dapat dipastikan bahwa pompa PA-04 masih mampu untuk mengkompensasi kehilangan air di cooling tower.   Kata kunci : make up water, revitalisasi cooling tower, kehilangan air

scholarly journals Numerical Simulation of the Performance Characteristics of the Hybrid Closed Circuit Cooling Tower

2008 ◽  
Vol 13 (1) ◽  
pp. 89-101 ◽  
Author(s):  
M. M. A. Sarker ◽  
E. Kim ◽  
G. C. Moon ◽  
J. I. Yoon
Keyword(s):  
Pressure Drop ◽  
Experimental Measurement ◽  
Cooling Tower ◽  
Cfd Simulation ◽  
Air Flow ◽  
Flow Distribution ◽  
Cooling Capacity ◽  
Performance Characteristics ◽  
Closed Circuit ◽  
Flow Rates

The performance characteristics of the Hybrid Closed Circuit Cooling Tower (HCCCT) have been investigated applying computational fluid dynamics (CFD). Widely reported CFD techniques are applied to simulate the air-water two phase flow inside the HCCCT. The pressure drop and the cooling capacity were investigated from several perspectives. Three different transverse pitches were tested and found that a pitch of 45 mm had lower pressure drop. The CFD simulation indicated that when air is supplied from the side wall of the HCCCT, the pressure drop can be over predicted and the cooling capacity can be under predicted mainly due to the non-uniform air flow distribution across the coil bank. The cooling capacity in wet mode have been calculated with respect to wet-bulb temperature (WBT) and cooling water to air mass flow rates for different spray water volume flow rates and the results were compared to the experimental measurement and found to conform well for the air supply from the bottom end. The differences of the cooling capacity and pressure drop in between the CFD simulation and experimental measurement in hybrid mode were less than 5 % and 7 % respectively for the uniform air flow distribution.

scholarly journals Performance Enhancement of Induced Draft Counter Flow Wet Cooling Tower with Different Types of Modified Shaped Fill Assembly

2020 ◽  
pp. 41-53
Author(s):  
Suman Dewanjee ◽  
Sheikh Muhammad Humayun Kabir ◽  
Uschuas Dipta Das
Keyword(s):  
Cooling Tower ◽  
Performance Enhancement ◽  
Cooling Capacity ◽  
Counter Flow ◽  
Cross Sectional ◽  
Performance Factors ◽  
Evaporation Loss ◽  
Percent Loss ◽  
Different Types ◽  
Wetted Surface Area

This paper presents an experimental analysis of heat transfer using different shaped fills in a counter flow induced draft cooling tower. The main objective is to determine and compare the characteristics of the cooling tower using newly shaped (splash and film) fills and the regular used fills. The newly shaped fills are inverted U-shape cross-sectional splash fill and film fill with ripple plates. The obtained results show that the performance is affected by the type and arrangement of the fills. The modified splash fill has increased the wetted surface area of fill within the same volume compared to regular fills. The film fill with ripple plates has been used     such that water from the distribution device ran down on both surfaces of each ripple plate. By the arrangement of ripple plates, cooling loss by premature dropping off of water has been avoided. Performance factors like range, approach, effectiveness, cooling capacity, evaporation loss, percent loss are calculated from collected data for newly shaped fills, and regular shaped fills. It is observed that range, effectiveness, and cooling capacity increases with both newly shaped fills. When ripple plated film fill is used; range, effectiveness, and cooling capacity is found highest among the different shape of fills used in this study. At the same time evaporation loss and percent loss are found lowest for inverted-U shaped splash fill.

scholarly journals Energy resource efficient designs of small-sized devices for recycled water cooling

2020 ◽  
Vol 12 (6) ◽  
pp. 339-348
Author(s):  
K.E. Bondar ◽  
N.S. Shulaev ◽  
S.P. Ivanov ◽  
S.V. Laponov
Keyword(s):  
Mass Transfer ◽  
Power Law ◽  
Cooling Tower ◽  
Air Flow ◽  
Vertical Component ◽  
Energy Resource ◽  
Laboratory Research ◽  
Cooling Towers ◽  
Water Cooling ◽  
Recycled Water

Introduction. To use natural sources in rational way, plantsof continuous cooling of closed systems of recycling water supply are used. The paper presents designs of small-sized devices for recycling water cooling which are energy resource effective due to twisted motion of air flow, moving countercurrent to the cooled water. Heat and mass transfer is a nanotechnological process that occurs at the intermolecular level. Methods and materials. Countercurrent mini cooling towers are widely used in all industries,but there are some disadvantages, the main of which is the insufficient interaction time of the moving phases. Screw motion of air flow is created by the tangential supply of cooling air in the bottom part of cylindrical small-sized cooling tower. The rate of rotary motion decreases as air flow moves up in cooling towers, and vertical parameter of the rate – increases. Such scheme of the air flow motionmakes it possible to decrease average vertical parameter of the rate and to increase phases contact time. Laboratory research. To determine the technological and hydroaerothermal characteristics, as well as to estimate the efficiency of cooling recycled water, and to carry out mass-heat exchange at the intermolecular stagean experimental facility of small-sized cooling tower with twisted air flow has been developed. Conclusions. In accordance with the exponential law it is shown that the rotational component decreases at increasing height, and in accordance with the power law the vertical component increases component with the exponent ~1,79. It is determined that moisture content x and air temperature tv in the volume of the height of the sprinkler varies according to a power law, in particular for a screw cooling tower proportionally x ~ h0,83, t в ~ h1,25. It was determined that the coefficients of mass transfer βxv and heat transfer αv of a mini cooling tower with twisted air flow at the intermolecular level with equal irrigation densities are 20% higher than the coefficients of a mini cooling tower with counter-current flow. Also it has been determined experimentally a dependence of aerodynamics resistance coefficient of the twisted irrigator of the cooling tower on criterium Refor air flow, and it was determined that it decreases like Re–K2 as the exponent K2 varies in the range 0.114÷0.193 depending on the irrigation density

Predicting cooling tower plume dispersion

1997 ◽  
Vol 211 (4) ◽  
pp. 291-297 ◽  
Author(s):  
B E A Fisher
Keyword(s):  
Cooling Tower ◽  
Industrial Process ◽  
Local Environment ◽  
Meteorological Conditions ◽  
Performance Criteria ◽  
Plume Dispersion ◽  
Cooling Towers ◽  
Atmospheric Conditions ◽  
Operating Characteristics

An assessment of the effects of visible cooling tower plumes on the local environment can be a necessary part of any proposal for a new large industrial process. Predictions of the dispersion of plumes from cooling towers are based on methods developed for chimney emissions. However, the kinds of criteria used to judge the acceptability of cooling tower plumes are different from those used for stack plumes. The frequency of long elevated plumes and the frequency of ground fogging are the two main issues. It is shown that events associated with significant plume visibility are dependent both on the operating characteristics of the tower and on the occurrence of certain meteorological conditions. The dependence on atmospheric conditions is shown to be fairly complex and simple performance criteria based on the exit conditions from the tower are not sufficient for assessments.

scholarly journals Experimental Investigation on Improvement of Wet Cooling Tower Efficiency with Diverse Packing Compaction Using ANN-PSO Algorithm

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 167
Author(s):  
Hasan Alimoradi ◽  
Madjid Soltani ◽  
Pooriya Shahali ◽  
Farshad Moradi Kashkooli ◽  
Razieh Larizadeh ◽  
...  
Keyword(s):  
Neural Network ◽  
Water Temperature ◽  
Water Flow ◽  
Flow Rate ◽  
Cooling Tower ◽  
Air Flow ◽  
Water Flow Rate ◽  
Pso Algorithm ◽  
Outlet Temperature ◽  
Air Flow Rate

In this study, a numerical and empirical scheme for increasing cooling tower performance is developed by combining the particle swarm optimization (PSO) algorithm with a neural network and considering the packing’s compaction as an effective factor for higher accuracies. An experimental setup is used to analyze the effects of packing compaction on the performance. The neural network is optimized by the PSO algorithm in order to predict the precise temperature difference, efficiency, and outlet temperature, which are functions of air flow rate, water flow rate, inlet water temperature, inlet air temperature, inlet air relative humidity, and packing compaction. The effects of water flow rate, air flow rate, inlet water temperature, and packing compaction on the performance are examined. A new empirical model for the cooling tower performance and efficiency is also developed. Finally, the optimized performance conditions of the cooling tower are obtained by the presented correlations. The results reveal that cooling tower efficiency is increased by increasing the air flow rate, water flow rate, and packing compaction.

scholarly journals Theoretical and experimental study of a cross-flow induced-draft cooling tower

2009 ◽  
Vol 13 (4) ◽  
pp. 91-98
Author(s):  
Elazm Abo ◽  
Farouk Elsafty
Keyword(s):  
Experimental Study ◽  
Cooling Tower ◽  
Characteristic Curve ◽  
Cross Flow ◽  
Hot Water ◽  
Proper Solution ◽  
Cooling Towers ◽  
Water Cooling ◽  
Transfer Coefficients ◽  
Experimental Rig

The main objective of this study is to find a proper solution for the cross-flow water cooling tower problem, also to find an empirical correlation's controlling heat and mass transfer coefficients as functions of inlet parameters to the tower. This is achieved by constructing an experimental rig and a computer program. The computer simulation solves the problem numerically. The apparatus used in this study comprises a cross-flow cooling tower. From the results obtained, the 'characteristic curve' of cross-flow cooling towers was constructed. This curve is very helpful for designers in order to find the actual value of the number of transfer units, if the values of inlet water temperature or inlet air wet bulb temperature are changed. Also an empirical correlation was conducted to obtain the required number of transfer units of the tower in hot water operation. Another correlation was found to obtain the effectiveness in the wet bulb operation.

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