Experimental and Numerical Study of Thermal Performance of Solar Water Heater

2021 ◽  
Author(s):  
Rinaldo H. Malau ◽  
Hideki Kawai ◽  
Himsar Ambarita ◽  
Dandy R. Tampubolon ◽  
Wahyu M. Silalahi
Keyword(s):  
Thermal Performance ◽  
Numerical Study ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water

scholarly journals Performance Study of a Cylindrical Parabolic Concentrating Solar Water Heater with Nail Type Twisted Tape inserts in the Copper Absorber Tube

2017 ◽  
Author(s):  
Amit K. Bhakta ◽  
Nitesh K. Panday ◽  
Shailenrda N. Singh
Keyword(s):  
Solar Energy ◽  
Thermal Performance ◽  
Water Flow Rate ◽  
Twisted Tape ◽  
Solar Water Heater ◽  
Performance Study ◽  
Water Heater ◽  
Solar Water ◽  
Pitch Ratio ◽  
Twist Pitch

This paper reports the overall thermal performance of a cylindrical parabolic concentrating solar water heater (CPCSWH) with inserting nail type twisted tape (NTT) in the copper absorber tube for the nail twist pitch ratios 4.787, 6.914 and 9.042 respectively. The experiments are conducted for a constant volumetric water flow rate and during the time period 9:00 h to 15:00 h. The useful heat gain, hourly solar energy collected and hourly solar energy stored of this solar water heater are found higher for nail twist pitch ratio 4.787. The above said parameters are found to be a peak at noon and observed to follow the path of variation of solar intensity. At the starting of the experiment, the value of charging efficiency is observed to be maximum. Whereas the maximum value of instantaneous efficiency and overall thermal efficiency are observed at noon. The key finding is that the nail twist pitch ratio enhances the overall thermal performance of the CPCSWH.

scholarly journals A small parabolic trough collector as a solar water heater: an experimental study in Ouargla region, Algeria

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Djamel Benmenine ◽  
Mokhtar Ghodbane
Keyword(s):  
Thermal Performance ◽  
Solar Collector ◽  
Hot Water ◽  
Solar Water Heater ◽  
Parabolic Trough ◽  
Water Heater ◽  
Parabolic Trough Collector ◽  
Solar Water ◽  
Knowing That ◽  
Average Consumption

This study aims to conduct an experimental thermal examination of a parabolic trough collector in Ouargla region at Algeria, which will be used as a solar water heater. The solar collector was manufactured and then experimentally tested, as its theoretical optical performance was estimated at 75.06%, while the values of its true thermal performance are 10.61, 10.68 and 8.85 % for 13 May, 14 May and 15 May. Although its thermal performance is somewhat low, the studied PTC is effective in heating the water, whereas, using a volumetric flow of 0.011 l/s, about 317 liters of water can be heated daily at 42°C, knowing that the daily average consumption of hot water in a typical house is 250 liters because the Ouargla region is strategically located that receives huge amounts of solar irradiance

scholarly journals Flat plate solar water heater with closed-loop oscillating heat pipes

2021 ◽  
pp. 192-192
Author(s):  
Piyanun Charoensawan ◽  
Patomsok Wilaipon ◽  
Nopparat Seehawong
Keyword(s):  
Flat Plate ◽  
Flow Rate ◽  
Thermal Performance ◽  
Closed Loop ◽  
Water Flow Rate ◽  
Heat Pipes ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water ◽  
Irradiation Intensity

The flat plate solar water heater, using the closed-loop oscillating heat pipes (CLOHP), was constructed and investigated. The flat plate collector consisted of 10 pipes of CLOHP and the collector area was 1.5?1 m2. Each CLOHP was made of a copper capillary tube with a 1.5 mm inner diameter, a 2.8 mm outer diameter and had 20 turns. The distilled water was used as the working fluid with a filling ratio of 50% the tube?s total internal volume. The evaporator section of the CLOHP was placed on the absorber plate of the collector, and its condenser section was wrapped around the copper tube, in which hot water flowed through. The solar water heater was tested under the solar simulator with halogen lamps generating the uniform artificial solar energy. The irradiation intensity and the water flow rate of the solar water heater were adjusted. It was found that the thermal performance of the solar water heater clearly improved with an increase in the irradiation intensity from 480 to 1086 W/m2. However, the water flow rate in the range of 1.5-3.0 L/min, had a thermal performance that was slightly different. The thermal efficiency of 0.67 was archived at the high irradiation intensity of 947-1086 W/m2. Moreover, the mathematical model to predict the thermal efficiency of the flat plate solar water heater with the CLOHPs was obtained.

scholarly journals 4E (Energy, Exergy, Economic, and Environment) examination of a small LFR solar water heater: An experimental and numerical study

2021 ◽  
pp. 101277
Author(s):  
Zafar Said ◽  
Mokhtar Ghodbane ◽  
Arun Kumar Tiwari ◽  
Hafiz Muhammad Ali ◽  
Boussad Boumeddane ◽  
...  
Keyword(s):  
Numerical Study ◽  
Solar Water Heater ◽  
Water Heater ◽  
Solar Water
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