Gammon Construction Limited

Project :

Installation of a 1440 turbines wall with purpose of electricity generation and advertising .

Additionnal purpose : present the project to an innovation award in 2007 .

Location : 21 Chun Wang Street

Tseung Kwan O industrial estate .

Contact :Mr Wong Yiu Ming Ray . .......Tel : 26956329 - 90291043



North view
East view
South view
West view
for North East winds :clear of obstructions Clear

For South East-South West :clear of obstruction

Average Wind speed : probably approx 7 to 8 m/s
Site visit : March 23 rd 2007 :comments : weak gust with 8 m/s maximum
Conclusion : the location is very suitable for installation : all directions are clear and constant direct wind



Unit base : 20 turbines + generator . 8 rows x 9 units columns
Total units = 72 unit base .. Total number of Turbines = 1440 : Total area of the board : approx 83 square meter
Each unit is rated at 125 watts for 10m/s wind speed and 15 watts for 5 m/s wind speed .
The output should be in the 2 to 4 kW range with a daily production of approx : 50 to 100 kWh .


Electrical set up

10 Batteries 12 Volts + 5 x 0.8-1.2 kW inverter .

The electrical installation will be located in one of the control room inside the building .

The connections to appliances will be discussed with Gammon construction Ltd after installation of the turbines and testing for approx a week .

After 6 months of continous operation and data collections a Grid interconnection will be applied for .


Technical Specification

1 Unit base x 8 rows : total weight = 152 kgs . total weight for 9 units : 1 368 kgs

Total holding posts :28 . Sharing load : 48.0 kgs /post .

Strenght and resistance : for winds of 50 m/s (typhoon no 10 condition) .

One unit base of 20 turbines is facing approx 240 N force for a direct hit .Total force for 1440 turbines = 17 280 N force .

The average force applied per post is: 640 N . The posts are designed to take 10000 N / 2 meter .

Each unit base will be welded to the posts in order to avoid screws and give flexibility during installation.

Each posts and frames will be made of stainless steel 304 grade .the location being on sea shore ,corrosion is a primary issue .

The frame and mounting frame should have an expected life span of over 30 years .

Remark 1: the mounting frame will be monitored and reinforced if needed .

Remark 2: the load will be applied only on the parapet .No load on the roof slab and no work will be done on the roof slab ,preserving the roof waterproofness . Each post will be attached to the wall by 4 concrete machine screw anchor .Each post will be firmly and definitively anchored by a welded hook barre over the parapet .



Sign Board Drawing
1440 Turbines aligned on 8 rows and 180 columns .the first "Gammon" uses 6 rows and 5 columns . the second "Gammon" uses 8 rows and 6 columns .
3 D right view for 2 units of 5.1 meters .
Front view of 2 units
Section of the balcony on which the frame will be attached .
Section of the balcony and slab
Right view of the frame installation
Right view of the frame
Back view of the main frame stand .
3D view of the posts .



Proposed contract : to download in .DOC format . Click here (save first and then open)
Home I Team I Products I Installer Training I Facts & Media I Contact Us I Shopping

Motorwave Ltd. Copyright 2006