Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensor
This paper presents an experimental study to measure some physic-chemical properties of a high-density polyethylene geomembane (GEMPEHD) in a temperature range from 300 K to 400 K. The results will yield a dependency between temperature and its properties in order to study an energy and process the...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
|
| Series: | MATEC Web of Conferences |
| Online Access: | https://doi.org/10.1051/matecconf/201814902046 |
| _version_ | 1818615701319974912 |
|---|---|
| author | Nassim Baba Ahmed Khaled Aliane Abderrahim Benmoussat |
| author_facet | Nassim Baba Ahmed Khaled Aliane Abderrahim Benmoussat |
| author_sort | Nassim Baba Ahmed |
| collection | DOAJ |
| description | This paper presents an experimental study to measure some physic-chemical properties of a high-density polyethylene geomembane (GEMPEHD) in a temperature range from 300 K to 400 K. The results will yield a dependency between temperature and its properties in order to study an energy and process the thermal aging GEMPEHD on the solar collector. In the energy study, we solve the nonlinear equation of unsteady heat with as main non linearity influence of different properties GEMPEHD on the solar collector and one notes that the GEMPEHD presented a maximum exchange Thermal characterized by high absorption and low reflection. Thus, increasing the power absorbed by the GEMPEHD increases its temperature and the useful power received by the air and then the air temperature. Overall losses increase with the increase of the temperature difference between the GEMPEHD and windows and this increases the efficiency of the solar collector and minimize the entropy of the system. Then the study of thermal aging is dedicated to the interpretation of various analyses on GEMPEHD before and after its use in the solar collector. The thermal aging GEMPEHD in the air is a physical loss and chemical consumption immediately followed by a brutal oxidation of the polymer. The losses would be governed primarily by the chemical consumption of antioxidants. After various tests, we conclude that the value of using the GEMPEHD as absorber in the solar collector is doubly beneficial. First, given its very attractive cost compared to other as efficient absorbers (such as metals) gives good thermal performance of the solar collector even reaching 72%. While the life of the GEMPEHD is rather long (several years). |
| first_indexed | 2024-12-16T16:38:05Z |
| format | Article |
| id | doaj.art-18c019b7d42b4fbab492be00bbd288e7 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-16T16:38:05Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-18c019b7d42b4fbab492be00bbd288e72022-12-21T22:24:24ZengEDP SciencesMATEC Web of Conferences2261-236X2018-01-011490204610.1051/matecconf/201814902046matecconf_cmss2018_02046Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensorNassim Baba AhmedKhaled AlianeAbderrahim BenmoussatThis paper presents an experimental study to measure some physic-chemical properties of a high-density polyethylene geomembane (GEMPEHD) in a temperature range from 300 K to 400 K. The results will yield a dependency between temperature and its properties in order to study an energy and process the thermal aging GEMPEHD on the solar collector. In the energy study, we solve the nonlinear equation of unsteady heat with as main non linearity influence of different properties GEMPEHD on the solar collector and one notes that the GEMPEHD presented a maximum exchange Thermal characterized by high absorption and low reflection. Thus, increasing the power absorbed by the GEMPEHD increases its temperature and the useful power received by the air and then the air temperature. Overall losses increase with the increase of the temperature difference between the GEMPEHD and windows and this increases the efficiency of the solar collector and minimize the entropy of the system. Then the study of thermal aging is dedicated to the interpretation of various analyses on GEMPEHD before and after its use in the solar collector. The thermal aging GEMPEHD in the air is a physical loss and chemical consumption immediately followed by a brutal oxidation of the polymer. The losses would be governed primarily by the chemical consumption of antioxidants. After various tests, we conclude that the value of using the GEMPEHD as absorber in the solar collector is doubly beneficial. First, given its very attractive cost compared to other as efficient absorbers (such as metals) gives good thermal performance of the solar collector even reaching 72%. While the life of the GEMPEHD is rather long (several years).https://doi.org/10.1051/matecconf/201814902046 |
| spellingShingle | Nassim Baba Ahmed Khaled Aliane Abderrahim Benmoussat Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensor MATEC Web of Conferences |
| title | Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensor |
| title_full | Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensor |
| title_fullStr | Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensor |
| title_full_unstemmed | Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensor |
| title_short | Influence of an absorbers GEMPEHD thermal properties on the propagation of heat in a solar sensor |
| title_sort | influence of an absorbers gempehd thermal properties on the propagation of heat in a solar sensor |
| url | https://doi.org/10.1051/matecconf/201814902046 |
| work_keys_str_mv | AT nassimbabaahmed influenceofanabsorbersgempehdthermalpropertiesonthepropagationofheatinasolarsensor AT khaledaliane influenceofanabsorbersgempehdthermalpropertiesonthepropagationofheatinasolarsensor AT abderrahimbenmoussat influenceofanabsorbersgempehdthermalpropertiesonthepropagationofheatinasolarsensor |