Dear Khaleel

The wind and air movements in high altitudes represent a dilemma for tower construction .

Regards 

Dear Dr. Khaleel

The higher height of a practical solar tower of solar chimney is 200 m and any height more that have many practical problems.

Regards

Dear Dr Miqdam  i would like to thank you for this answer and i want to know what is the problem s if the chimney higher than  200  m . 

Dear Dr Khaleel

Above 200 m long chimney is exposed to high wind velocities in the upper part of it which may make it tends and if the angle of inclination was high it may fall down. Many construction evaluations and arrangements must be taken before the prepare to enlarge the tower length.

Regards 

I think it's also depending  on the materials that the tower made of 

Carbon alloy as a composite material I think now used

Dear Dr Al-Khafaji

It is very important to use materials that can withstand the stresses exposed on the tower. As I mentioned the tower will be exposed to air movement at high velocities which requires efficient buildings.

Regards

Dear colleague

he solar tower is an updated version of a solar chimney — a centuries-old technique for providing ventilation to a home by creating a natural updraft from sun-heated air.The physics is also similar to the atmospheric vortex engine, where a man-made tornado funnels warm air up into the sky. Even though this vortex could extend higher than a solid structure, only the solar tower has been demonstrated to work, Forté said.In 1982, a small prototype was installed in Manzanares, Spain. Its tower was 195-meters-tall and was surrounded by a transparent canopy that covered an area of about 244 meters in diameter. As it was primarily a test facility, the maximum power output was only 50 kilowatts. Inexpensive materials were purposefully used to minimize costs, but eventually a storm blew the tower over in 1989.In comparison, EnviroMission’s design calls for a concrete tower that should last 50 years, Forté told LiveScience.

The optimum configuration is an 800- to 1,000-meter tower (twice the height of the Empire State Building) surrounded by a greenhouse canopy 1.5 miles (2.5 kilometers) in radius on the ground.

Regards 

Dear Sir all i would  thank you for these information .

Dear Khaleel

The higher height of a solar chimney cannot exceed 200m for construction reasons.

Regards

Dear Dr Nasser

The height of a solar chimney can be higher than 200m and it reached in some constructions about 1 km however tis still under tests.

Regards

Dear friend s  like to thank you for these answers , and i  want  to know the difficulties in construct solar tower . 

Dear Khaleel

The wind and air movements in high altitudes represent a dilemma for tower construction .

Regards 

https://architecture.mit.edu/sites/architecture.mit.edu/files/attachments/lecture/SolarUpdraftTower_Project.pdf