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TASK A

Project Background

The project chosen was the construction of a Solar Chimney Power Plant. This project was

based on the technology called Solar Chimney Technology that primarily will produce bulk

electricity in areas that are hot enough and utilised 20-30 kph wind to operate turbines

connected with generators. This technology is considered simple and reliable. It can be used

to areas that have no water for cooling and are environmentally friendly.

A solar chimney power plant involves with a solar hot air collector, a solar chimney and a

turbine with generator. The solar chimney plant combines all of these elements as shown in

Figure 1.

Figure 1. Schematic Diagram of the Solar Chimney Power Plant

Solar radiation is used to heat up air in a circular cover and the ground below will serve as a

hot air collector. A vertical chimney is at the middle with airtight joints between the cover.

Since hot air is lighter it will rise up and more hot air from the collector is sucks. Constant

up-draught is produced and that energy is transformed into mechanical energy using the

turbines and converted into electrical energy by using the generators.

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Project Objectives

To construct a Solar Chimney Power Plant expected to generate electricity for some areas in

North-western China. The plant will able to produce 110-190 kW monthly all year round.

This objective is expected to be sufficient to address the power requirement of the said region.

Other objective of this project aside from generating electric power is to use the solar

collector of the plant as a greenhouse for the agricultural sector.

Project Requirements

One requirement of this project is a better solar radiation which can be found in this regioncompared to other parts of China. The solar power plant was constructed with a chimney of a

height at 200 meters and a diameter of 10 meters. The diameter of the solar cover is 500

meters in order to produce electric power of 110-190 kW.

Project Outcomes

The production of electric power of 110-190 kW of the plant is highly dependent of the

regions solar irradiance and ambient temperature. Since the solar radiation of North-western

China is better compared to other parts of the country, the plants component efficiency is

higher in terms of power generation. Although the ambient temperature of the region did not

have a pronounced effect of the plants power generating performance.

Project Definition

The project was defined based on what kind of technology was used which is SolarChimney Technology and its required performance characteristics which is also the

production of 110-190 kW electric power for North-western China.

Its dual functions which are the production of significant amount of electric powerand the project can also be used as greenhouse for agriculture purposes.

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The project was also defined by its lower operation cost compared to traditionalpower plants and other type of solar power stations. No cooling water requirement

also is an advantage since the area has problems with fresh water.

The project has low construction cost since the main materials used such as concreteand transparent materials are available in the area. Turbines and collectors are also

readily available industrial products.

Project Management Technique

The project was clearly defined in terms of technology to be used and the justification of the

selection. The design was chosen base on the performance of the plant that will meet the

power requirement of the region. The availability of the materials for construction was

considered which will result in lower construction cost compared to other suggested designs.

The project was evaluated to have a lower power production cost and operates simply with a

number of merits. These are the major reasons that project management was valuable in the

process.

Project Organisation