1. No category

Civic Exchange and WWF Hong Kong
Energy Forum 20:
Renewables and Electricity Market Reform
Panel discussion:
Insider story Opportunities of Renewable
Energy Development in China and Hong Kong
Dr. Jimmy Tong, Energy Advisor of
Friends of the Earth (Hong Kong)
Date: 11 May 2015 (Monday)
Time: 11:15-12:30
Venue: Wanchai, Hong Kong.
Renewable Energy
A.
B.
C.
D.
Small Scale, On-site, Distributed Generation
Off-Shore Wind Farm
Solar Energy
Building Integrated RE Design Strategy
Source: Arup
Source: windpowerengineering.com
Source: Sino Group
Source: Inha U
Source: Arup
Source: Arup
A. Biodiesel Tri-generation System
• Power generation by combustion of Biodiesel
• Hot water from waste heat for dehumidification and
space cooling
• Zero carbon emission source for space cooling and power
• Exceeded power supply to the grid for embodied carbon
trade-off
Prime
Mover
Generator
100 kW
Absorption
Chiller 70 kW
Electric Chiller
210 kW
85° C
High Temp
Coil
Desiccant
Wheel
33° C
7° C
28° C
143 MWh
Biodiesel
LV Switch
PV
87 MWh
99 MWh
+
Export to
Grid
Project: Zero Carbon Building, Hong Kong, CIC
131 MWh
Chilled Water re-used
for radiant cooling
Cool Dry Air
16° C
16° C
Earth
Cooling
Site and Building
Consumption
A. Wind Energy
4
Project:
The Green Atrium, Hong Kong, New World
B. Offshore Wind Farm
• 67 – 3MW or 40 – 5MW
• capacity to produce ~1% of total HKSAR annual electricity needs.
• source: ESB-146/2006 Issue 3, May 2009
5
Project: Offshore Wind Farm, Hong Kong, CLP
C. Urban PV methodology
Government
Institutional Building
Community Center
Cheung Sha Wan Government Office
Buildings and Open Spaces
• Database with Geographic
Information System (GIS)
• Statistical methods
• Detailed site survey
Business
Park
C. Case Study – Hong Kong
Overall PV Potential
(Assuming 15% cell efficiency)
Existing
Buildings
Future
Buildings
BIPV
115.4 GWh
479.0 GWh
Non-BIPV
91.3 GWh
52.0 GWh
Total
738 GWh
D. Building-Integrated RE Design Strategy
Passive Design
Active Design
Renewables
Occupant Behavior
Further Reference
Annual Solar Collection
Solar Radiation
(kWh/sqm/yr)
1200
Avg = 1350
Avg = 1250
1000
800
600
Avg = 1180
Avg = 1320
N
Citation:
Cheng, V.S.Y., Tong, J.C.K. (2014). Effect of Urban Density on PV Performance. In M.A. Gill (Ed.),
Photovoltaics: Synthesis, Applications and Emerging Technologies (pp. 173-196). Nova Science
Publishers, Inc., Hauppauge, NY.
400
200
0
Further Reference
Citation:
Tong, J.C.K. (2014). Numerical Simulations of Small Wind Turbines - HAWT Style. In J.P. Abraham and B.
Plourde (Eds.), Small-Scale Wind Power: Design, Analysis, and Environmental Impacts (pp. 129-146).
Momentum Press, New York, NY.
Public Consultation on the Future
Development of the Electricity Market
• Shall we have a carbon reduction target ?
• Shall we have a RE target?
– Should we ask the utilities to provide additional RE
capacity?
– Can/Should we request the additional energy from
China in future all from RE?
• Shall we have decentralized storage?
– Should we ask for more capable solution providers
and operators?