Enhancing Productivity of V-Trough Solar Water Heater Incorporated Flat Plate Wick-Type Solar Water Distillation System

2020 ◽  
Vol 143 (3) ◽  
Author(s):  
M. Murugan ◽  
A. Saravanan ◽  
G. Murali ◽  
Pramod Kumar ◽  
V. Siva Nagi Reddy
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Transfer Coefficients ◽  
Water Heater ◽  
Water Distillation ◽  
Solar Water ◽  
Heat Transfer Coefficients ◽  
Distillation System ◽  
Solar Intensity ◽  
The Comparative Study

Abstract This experimentation deals with the comparative study of a flat plate wick-based solar water distillation system (SWDS) with and without V-trough (VT) solar collector (SC) under the actual environmental conditions of Salem, Tamilnadu, India, as an attempt to enhance the productivity of the solar water distillation system. The influences of wick material, solar intensity, flow rate, and ambient temperature on productivity are also proposed. To ensure accuracy in the experimentation, the overall observation is divided into four spells with four different wick materials. The hourly productivity of the proposed still is compared with the standard theoretical equation, and the deviation between them is well accepted with ±10.14%. The maximum convective and evaporative heat transfer coefficients are observed during spell 3 as 2.488 W/m2K and 25.321 W/m2K, respectively. The prediction of Nusselt number and Sherwood number are also proposed to validate the heat transfer and mass transfer, respectively. Compared to polyester, terry cotton, and jute wick materials, fur fabric wick yielded maximum productivity of 4.40 l/day and 6.29 l/day for SWDS alone and SWDS with VT, respectively. The results revealed that the productivity of the SWDS coupled with V-trough SC is 30.12% greater than SWDS alone.

Heat Transfer and Pressure Distribution in Open Cavity Flow

1967 ◽  
Vol 89 (1) ◽  
pp. 103-108 ◽  
Author(s):  
A. F. Emery ◽  
J. A. Sadunas ◽  
M. Loll
Keyword(s):  
Heat Transfer ◽  
Pressure Distribution ◽  
Flat Plate ◽  
Cavity Flow ◽  
Rectangular Cavity ◽  
Open Cavity ◽  
Transfer Coefficients ◽  
Transient Techniques ◽  
Heat Transfer Coefficients ◽  
Mach 3

The heat transfer and pressure distribution in a rectangular cavity in a Mach 3 flow were investigated for a rectangular and an inverted-wedge recompression step. Noticeable differences between the results for the two steps were found in the recovery factors, but no real differences were detected in the heat-transfer coefficients or the velocity profiles. Heat-transfer coefficients in the cavity were determined by transient techniques and were found to range from 50 to 110 percent of the flat-plate value just prior to the expansion step.

Heat Transfer Characteristics of Impinging Two-Dimensional Air Jets

1966 ◽  
Vol 88 (1) ◽  
pp. 101-107 ◽  
Author(s):  
Robert Gardon ◽  
J. Cahit Akfirat
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Two Dimensional ◽  
Heat Transfer Characteristics ◽  
Transfer Coefficients ◽  
Average Heat ◽  
Heat Transfer Coefficients ◽  
Transfer Characteristics ◽  
Air Jets

Local as well as average heat transfer coefficients between an isothermal flat plate and impinging two-dimensional jets were measured for both single jets and arrays of jets. For a large and technologically important range of variables the results have been correlated in relatively simple terms, and their application to design is briefly considered.

Angular Dependency on Film Boiling Heat Transfer From Relatively Long Inclined Flat Plates

2013 ◽  
Vol 135 (12) ◽  
Author(s):  
Chan Soo Kim ◽  
Kune Y. Suh
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Boiling Heat Transfer ◽  
Flow Direction ◽  
Film Boiling ◽  
Transfer Coefficients ◽  
Flat Plates ◽  
Heat Transfer Coefficients ◽  
Inclination Angles ◽  
Angular Dependency

The effect of inclination angle of the downward facing flat plate on the interfacial wavy motion is investigated utilizing the water quenching test apparatus downward ebullient laminar transition apparatus flat surface (DELTA-FS) in a quasi-steady state. Film boiling heat transfer coefficients are obtained on the relatively long surface in the flow direction. Interfacial velocities at the various inclination angles and wall superheat conditions are determined through the analysis of the visualized continuous snapshots with 1000 fps. Visualization of the vapor film reveals that the interfacial wavelength increases and the interfacial velocity decreases as the flat plate moves from the vertical to downward facing locations. A new semi-empirical correlation is developed from the measured heat transfer coefficients and interfacial velocities. The correlation shows good agreement with the previous water test results on vertical plates. In the case of the previous other fluid experimental results on the vertical plates, the correlation overpredicts the film boiling heat transfer coefficients at the experimental condition.

scholarly journals Experimental study of an inclined flat plate-type solar water distillation system

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
U. Sahoo ◽  
S. K. Singh ◽  
I. Barbate ◽  
R. Kumar ◽  
P. C. Pant
Keyword(s):  
Experimental Study ◽  
Flat Plate ◽  
Water Distillation ◽  
Solar Water ◽  
Distillation System ◽  
Plate Type

Temperature Distributions in Laminar Flat Plate Shear Flow

1968 ◽  
Vol 90 (1) ◽  
pp. 32-36 ◽  
Author(s):  
A. F. Emery ◽  
K. F. Brettman
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Transfer Coefficients ◽  
Shearing Flow ◽  
Heat Transfer Coefficients ◽  
Temperature Distributions ◽  
High Shearing ◽  
The Heat Transfer Coefficient

An approximate solution to the heat transfer coefficient on a flat plate in a linear shearing flow is given. It is shown that high shearing rates may significantly increase the local heat transfer coefficients.

Experiment of a Flat Plate Solar Water Heater Collector with Modified Design and Thermal Performance Analysis

2014 ◽  
Vol 624 ◽  
pp. 332-338 ◽  
Author(s):  
Shouquat Hossain ◽  
Ali Wadi Abbas ◽  
Jeyraj Selvaraj ◽  
Ferdous Ahmed ◽  
Nasrudin Bin Abd Rahim
Keyword(s):  
Heat Transfer ◽  
Solar Radiation ◽  
Flat Plate ◽  
Thermal Performance ◽  
Solar Water Heater ◽  
Water Heater ◽  
Pipe Surface ◽  
Solar Water ◽  
Useful Heat ◽  
Absorber Surface

An investigation is reported of the thermal performance of a flat plate solar water heater with a circulating absorber pipe surface. The thermal performance of the 2-side parallel serpentine flow solar water heater depends significantly on the heat transfer rate between the absorber surface and the water, and on the amount of solar radiation incident on the absorber surface. The modified pipe arrangement has a higher characteristic length for convective heat transfer from the absorber to the water, in addition to having more surface area exposed to solar radiation. It means during the operation of water heater, more solar energy is converted into useful heat. However, this modification has reduced the efficiency of the system marginally.

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