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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 101 to 110 of 461 (0.021 seconds)| 101 |
Solar and net radiation over snow in a sub-arctic environmentPetzold, Donald Emil, 1949- January 1974 (has links)
No description available.
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| 102 |
Microcontroller based data acquisition and control of a solar thermal energy system.Doho, Gonçalves Justino. January 2009 (has links)
A solar thermal energy system is being rebuilt at University of KwaZulu-Natal School
of Physics. A similar system is also being built in the University Eduardo Mondlane –
Maputo Mozambique, in a team development work. The system is composed
mainly of the following subsystems:
(i) An Energy capture subsystem: paraboloidal dish concentrator with a heat
receiver, mounted on a dual axis polar mount sun tracking assembly;
(ii) An Energy storage subsystem: rock-bed thermal energy storage (TES) system;
(iii) An Energy utilization subsystem: any user heat utilization (like a cooking or
water boiling appliance); and
(iv) A monitoring and control subsystem.
The subsystem (iv) for performing a controlled charging of the Thermal Energy
Storage from a hot plate simulated solar heat, was formerly developed and it was
based on 2 conventional data loggers (HP/Agilent) and programs running on 2 PCs.
The present work is aimed at performing the same plus additional monitoring and
control tasks, based on a low cost microcontroller design. The monitoring and
control subsystem based on the Atmel ATmega 32 MCU has been designed and
built, capable of performing data acquisition, data logging and control of relevant
system variables such as, hour and declination angles of the tracking concentrator;
to cite some of the main variables.
Besides a huge work of designing, building, programming and testing the
microcontroller system itself, a special focus was given to the monitoring and
control of the solar heat concentrator, to perform a dual axis sun tracking, so as to
get as much as possible of the available solar radiation. Measurements of various
system parameters such as, the sun tracking actual hour and declination angles,
the inlet and outlet temperatures of both the heat receiver and the rock bed heat
storage, etc., for the system under consideration have been carried out. / Thesis (M.Sc.)-University of KwaZulu-Natal, Westville, 2009.
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| 103 |
Improving the thermal performance of a light-weight metal roof in hot climates cHector Hugo Pantoja Ayala.Pantoja Ayala, Hector Hugo January 1989 (has links)
No description available.
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| 104 |
Daylighting in office spaces an energy saving techniqueBartlett, Janet Lea 08 1900 (has links)
No description available.
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| 105 |
Total horizontal solar radiation use in determining radiation values on a tilted solar collecting surfaceSpiegel, Laurence Steven 12 1900 (has links)
No description available.
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| 106 |
The delta-Sobolev approach for modeling solar spectral irradiance and radianceXiang, Xuwu 12 1900 (has links)
No description available.
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| 107 |
An investigation of the relationship between beam and global irradiation with the development of numerical solar radiation modelsBalaras, Constantinos Agelou 08 1900 (has links)
No description available.
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| 108 |
Evaluation of a thermal network simulation programWright, Charles Scott 08 1900 (has links)
No description available.
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| 109 |
An investigation of a user interface technique for the thermal network simulation program TNODE2West, Victoria Shan Rufo 05 1900 (has links)
No description available.
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| 110 |
Thermal modelling of highly glazed spacesPfrommer, Peter January 1995 (has links)
No description available.
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