Solar Assisted Heat Pump Water Heater for Use in Hong Kong

Project: Research

View graph of relations


Direct hot water production consumes about 5% of the total energy use in Hong Kong, and 22% when considering only the domestic sector. Cooking, which accounts for 20% of energy use in residential buildings, also has a high indirect demand on hot water. The actual needs of hot water can also extend to the commercial and industrial sectors. Gaseous fuels and electricity are mostly used in Hong Kong for hot water production. Air-to-water heat pumps are used in some commercial projects. Currently, the government is targeting to achieve 1–2% of the overall energy use of the territory to be from renewable energy sources by 2012. The objectives of this current project are thus:to study the opportunities of introducing solar assisted heat pump water heating technology, andthrough computer simulation, to assess its energy performance and costs compared with conventional heat pump and solar water heating systems.


Project number7002103
Grant typeSRG
Effective start/end date1/04/0729/12/09