TY  - JOUR
TT  - Thermal Efficiency Comparison of Flat Plate and Evacuated  Tube Solar Water Collectors
AU  - Koyuncu, Turhan
PY  - 2017
DA  - December
JF  - Tarım Makinaları Bilimi Dergisi
JO  - JAMS
PB  - Tarım Makinaları Derneği
WT  - DergiPark
SN  - 1306-0007
SP  - 133
EP  - 139
VL  - 13
IS  - 3
KW  - Efficiency
KW  - solar water collector
KW  - flat plate
KW  - evacuated tube
KW  - aluminium
KW  - copper
N2  - Flat plate and evacuatedtube solar water collectors are widely used for supplying hot water fordomestic and industrial applications in the world. However, there is no enoughinformation regarding thermal efficiencies of different type solar watercollectors for various environmental and climatic conditions. Therefore, inthis work; thermal efficiencies of different types of flat plate solar watercollector panels such as aluminum,copper, 304 chromium and evacuated tube have been compared.It was seen from the results that theefficiencies of aluminum and copper collector panels are changing between 56%...68%while the efficiencies of 304 stainless steel chromium panels are varied between67%...88. In addition, evacuated tube type solarwater collectors have less heat loss but lower absorber surface area to grossarea ratio (about 70%) when compared with flat plate solar water collectors.Based on absorber surface area, evacuated tube type solar water collectors havemore efficiency than equivalent flat plate collectors. However in practicalapplications, gross area of any solar water collector should be considered forcomparison. In this case, the efficiencies of evacuated tube type solar watercollectors are changing between 50%...70%. Besides, it should be kept in mindthat evacuated tube type solar water collectors can be preferred for coldenvironmental and climatic conditions because of their less heat loss and coldresistant.
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UR  - http://dergipark.org.tr/tr/pub/tarmak/issue//377070
L1  - http://dergipark.org.tr/tr/download/article-file/402114
ER  -