Black Point Power Station Additional Gas-Fired Generation Unit D1 Project
CLP Power Hong Kong Limited (CLP Power) has always made sustained efforts in reducing carbon emission and improving the environment through optimising its power generation fuel mix. Located in the New Territories of Hong Kong, the Black Point Power Station is one of the world’s largest gas-fired combined-cycle power stations. In support of the Government’s plans for significant carbon intensity reduction by increasing the percentage of local gas-fired generation to around 50% of the total fuel mix in 2020, CLP Power is constructing an additional gas-fired generation unit with an advanced design at the Power Station.
The new unit serves as an expansion in the Black Point Power Station’s overall generation capacity and would feature a Combined Cycle Gas Turbine (CCGT) configuration which would give it an efficiency of around 60%, higher than that of the existing gas-fired units. This project will allow for the use of coal-fired generation to be reduced, contributing further towards meeting the Government’s carbon intensity reduction targets and air quality objectives.
The Benefits of Gas-Fired Generation
Natural gas is a relatively clean fossil fuel. It emits far less sulphur dioxide (SO2) and respirable suspended particulates (RSP) during power generation compared to other fossil fuels. The emission of nitrogen oxides (NOx) from the new unit would also be substantially reduced compared to the gas-fired units currently being used at the Black Point Power Station.
Moreover, the use of coal-fired generation would be reduced when the new unit comes into operation. This would contribute further towards meeting the carbon intensity reduction targets as well as the Government’s air quality objectives.
Combined Cycle Gas Turbine (CCGT) Technology
CCGT technology is adopted in the eight gas-fired generation units currently being used at the Black Point Power Station. The new unit will be state-of-the-art and capable of achieving an efficiency of around 60%, higher than the existing gas units, and will further reduce emissions.
The most special feature of a CCGT is its combined cycle dual turbine design, consisting of a gas turbine and a steam turbine. First, natural gas is burned in the gas turbine to generate electricity. During the process, the heat exhausted from the gas turbine is captured and transported to heat up water in a boiler. As a result, steam is produced to drive the steam turbine for power generation. The combined cycle design allows for greater output without the use of additional fuel.
CCGT Power Generation Process
|Number of Storeys||1|
|Number of Floors||3|
|Project Developer / Owner||CLP Power Hong Kong Limited|
|Project Manager||CLP Power Hong Kong Limited|
|Architect||Ove Arup & Partners Hong Kong Limited|
|Landscape Architect||Ove Arup & Partners Hong Kong Limited|
|M&E Engineer||Ove Arup & Partners Hong Kong Limited|
|C&S Engineer||Ove Arup & Partners Hong Kong Limited|
|Façade Consultant||Ove Arup & Partners Hong Kong Limited|
|Main Contractor||Leighton Contractors (Asia) Limited|
|Sustainable Design Consultant||Ove Arup & Partners Hong Kong Limited|
|Environmental Consultant||Environmental Resources Management (ERM)|