The Effect of Face-Air Velocity Distribution on Heat Transfer Performance of Air-Cooled Condensers

Zhang, Zhaoying; Yang, Jianguo

doi:10.18280/ijht.330108

Cited by 4 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Access to an appreciable group of available experimental data is taken as a starting point for the present study. The correlation of the available experimental quantities allows having a unique function for the evaluation of condensation heat transfer coefficient, which responds to the following expression [25][26][27][28][29] (19) The experimental data used in the generalization and development of the expression (16) and (17) are provided in table 4. Figure 2 shows the correlation of experimental data.…”

Section: Experimental Validation Of a Single Model For Condensation Imentioning

confidence: 99%

Evaluation of condensation heat transfer in air-cooled condenser by dominant flow criteria

Camaraza-Medina¹,

Khandy²,

Carlson³

et al. 2018

MMEP

View full text Add to dashboard Cite

In this paper, a modification to the dominant flow criteria is presented for the study of heat transfer by confined condensation in Air Cooled Condenser (ACC) systems. The new methodology combines in one single procedure the analysis, which with the current methods requires tedious grouping processes. A new proposal reduces the average error by computing 22% in 88.7% of the available samples and includes the shear stress produced by the steam drag when it flows at speeds greater than 40 m/s. New method is also valid for a vapor quality located between 0.9 and steam flows between 3 and 590 kg/(m2/s-1), values for the Reynolds number for the liquid portion between 660 and 58 540 and the Reynolds number for the vapor portion located between 1 320 and 333 120, internal equivalent diameters of the tubes comprised between 7.4 to 49 mm.

show abstract

Section: Experimental Validation Of a Single Model For Condensation Imentioning

confidence: 99%

Evaluation of condensation heat transfer in air-cooled condenser by dominant flow criteria

Camaraza-Medina¹,

Khandy²,

Carlson³

et al. 2018

MMEP

View full text Add to dashboard Cite

show abstract

“…Many investigations have been carried out in order to clarify this problem. In figure 4 are given the average values of experimental results reported by [17][18]. This figure provides the variation of the local Nusselt number depending on the angle , on the periphery of a finned cylinder bathed by a cross and perpendicular airflow.…”

Section: Fluid Crossing Of a Finned Tubes Bank And His Influence On Lmentioning

confidence: 99%

Simplified analysis of heat transfer through a finned tube bundle in air cooled condenser-second assessment

Camaraza-Medina¹,

Rubio-Gonzale²,

Cruz-Fonticiella³

et al. 2018

MMEP

View full text Add to dashboard Cite

This paper present a review of mathematical procedures for heat transfer studies in cross flow through finned tube pack. Is given a new model for heat transfer calculations during airflow through finned tubes bank in air cooled condenser systems (ACC). The model was correlated with a total of 783 sets of available experimental data provided by ten authors of recognized prestige in the research area. The air flow bathes a package of finned tubes with an inclination of 45 0 to 60 0 with respect to the horizontal line. The studies were performed for ST/SL intervals between 0.4 and 2, air flow velocity of 0.1 to 100 m/s, an ambient temperature of 15 to 43°C, the incident wind velocity over the installation between 0 and 45 km/h, the outer equivalent diameter of the bare tubes between 0.019 and 0.05 m, a fins height between 2.7 and 7.9 mm.The fins thicknesses ranging between 1.3 and 3.5 mm and a number of fins per unit tube length between 315 and 394. The mean deviation found was 6.9% in 85.3% of the correlated experimental data.

show abstract

“…Zhaoying, and Jianguo Y. [19] determined the effect of face-air velocity distribution on the thermal performance of an air-cooled condenser of a power plant. They noticed that the distribution of the air velocity affects the thermal performance of the air cooled condenser.…”

Section: Introductionmentioning

confidence: 99%

Effect of Using Air Guide Net in Front of the Condenser on the Performance of Automobile Air Conditioning System

Mahdi

Gaddoa²

2019

alkej

View full text Add to dashboard Cite

The work of this paper is an investigation to improve the condenser performance of the automobile air conditioning system by enhancing the air-side heat transfer from the condenser through the use of an air guide net installed in front of the condenser face which is basically an aluminum plate having a circular entrance shape for the air passage. The A/C system was examined under two types of test. The first test was conducted the air guide net, while the second was done with the air guide net. The performances of the A/C system under these tests were compared. For the second type of test, the experiment was carried out with three different size of air guide net, three different circular diameters (2, 3 and 3.5 cm) and a common air passage area. The effect of varying the size of the air guide net and its inclination angle was investigated. The experimental work included five inclination angles (0o, 5o, 10o, 15o and 20o). It was found that the presence of the air guide net caused an improvement in the performance of the A/C system for all sizes and inclination angles. In addition, the electrical energy consumed by the A/C system without the air guide net was calculated and compared to those obtained for the A/C system with the air guide net. The results manifested that the reduction of the power consumption was enhanced by operating the A/C system with the air guide net.

show abstract

The Effect of Face-Air Velocity Distribution on Heat Transfer Performance of Air-Cooled Condensers

Cited by 4 publications

References 11 publications

Evaluation of condensation heat transfer in air-cooled condenser by dominant flow criteria

Evaluation of condensation heat transfer in air-cooled condenser by dominant flow criteria

Simplified analysis of heat transfer through a finned tube bundle in air cooled condenser-second assessment

Effect of Using Air Guide Net in Front of the Condenser on the Performance of Automobile Air Conditioning System

Contact Info

Product

Resources

About