Week no: week 6 (23/2/2012)
Objective:
- Research from the theory
- Advantages Solar photovoltaic
Content:
A photovoltaic system is a system which uses solar
cells to convert light into electricity. A photovoltaic system consists of
multiple components, including cells, mechanical and electrical connection and
mountings and means of regulating and modifying the electrical output. Due to the
low voltage of an individual solar cell typically 0.5V, several cell are
combined into photovoltaic modules, which are in turn connected together into
an array.
Photovoltaic power systems are generally classified
according to their functional and operational requirements, their components
configurations and how the equipment is connected to other power sources and
electrical loads. The three principal classifications are grid connected or
utility interactive systems, photovoltaic hybrid system and PV stand alone
systems. Photovoltaic system can be design to provide DC and AC power service,
can operate interconnected with or independent of the utility grid and can be
connected with other energy source and energy storage system.
Advantages Photovoltaic
- No pollution and totally silent in process energy compare wind and water based from turbine and very noisy
- Low cost maintenance and have a long lifetime
- Not required large space to build. The solar panel can put on the roof top
- Appropriate to use in Malaysia
GSM technology stands for Global System for Mobile
Communication. It is huge, rapidly expanding and successful technology. During
the period of evolution of mobile communication technologies various systems
were introduced and deployed to achieve standardization in mobile industry but
all the efforts were failed. Multiple issues were sustained like
incompatibility of systems, development of digital radio frequency. That is
when GSM Technology was introduced and problems like standardization
incompatibility were overcome.
Advantages GSM
- Uses radio frequencies efficiently and due to the digital radio path, the system tolerates more intercell disturbances.
- The average speech quality is better than analogue system
- Data transmitted throughout the GSM system
- Speech is encrypted and subscriber information security is guaranteed
- International roaming is technically possible within all country using GSM system
- The large market increases competition and lowers prices both for investment and usage
No comments:
Post a Comment