Heat transfer enhancement by pin elements

Sahiti, Naser; Durst, F.; Dewan, Anupam

doi:10.1016/j.ijheatmasstransfer.2005.07.001

Cited by 71 publications

(24 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In active systems, additional force is needed to receive the desired effect while in passive ones geometry is changed in order to increase the heat transfer coefficient [1,2]. Additionally, the heat transfer surfaces of twisted tape spiral wires, bars and pin elements are used for required surface extention [3].…”

Section: Introductionmentioning

confidence: 99%

Free convection on a refrigerator’s condenser

Orzechowski

Stokowiec

2014

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. The paper presents the measurement of heat transfer coefficient for the refrigerator's condenser in free convection regime. The water was pumped through the steel coils of heat exchanger with a constant flow rate and its temperature was kept at a demanded value by means of ultrathermostat. The research was conducted in stationary conditions which were controlled by a continuous measurement of the water temperature at inflow and outflow to the heat exchanger. The temperature distribution at the external condenser surface was registered by means of an infrared camera. Single elements used to the analysis were selected using the thermogram registered. In free convection regime and in case of small temperature change the heat transfer coefficient value can be calculated by comparing the measured temperature area with analytical solution describing one-dimensional temperature distribution along the rib. The accuracy of the proposed method for measuring the heat transfer coefficient was examined by comparing the heat transferred to the air and the heat lost by water flowing through the spiral of heat exchanger. An error between these two parameters is about 6%.

show abstract

Section: Introductionmentioning

confidence: 99%

Free convection on a refrigerator’s condenser

Orzechowski

Stokowiec

2014

EPJ Web of Conferences

View full text Add to dashboard Cite

show abstract

“…(12), it is easy to get the pressure drop of the channel p, and the fraction factor f can be obtained [14]:…”

Section: Data Reduction Testing Uncertaintymentioning

confidence: 99%

Experimental Study on Thermal Hydraulic Performance of Plate-Type Heat Exchanger Applied in Engine Waste Heat Recovery

Dong¹,

Zhang

Wang³

2017

Arab J Sci Eng

View full text Add to dashboard Cite

This paper experimentally investigates the thermal hydraulic characteristics for three types of fluid on plate heat exchanger surfaces. The three types of fluid are R245fa, glycol and water. The characteristics of heat transfer coefficient Nu and friction factor f are given. The concept of pump power is provided to overall evaluate the enhanced heat transfer. The dimensionless correlation equations of Nu and f factors are provided using multiple regression method. The mean absolute errors for the Nu and f factor are 9.7 and 6.8% in the whole test range.Keywords Rankine cycle · Plate type · R245fa · Thermal hydraulic · Empirical formula List of symbols

show abstract

“…Steady state condition, insulated outer surface of heat exchange and no phase changer have been assumed during the analysis of present heat exchanger. Under these conditions the heat dissipation of both sides [15], [16], [17] …”

Section: Theoretical Analysismentioning

confidence: 99%