1. System selection

2. Gas & electric water heaters

3. Solar hot water & heat pumps

4. Centralised hot water systems

5. Design practice in Hong Kong

[Powerpoint file in PDF format]

• How a Heat Pump Water Heater Works (2:01) https://youtu.be/EMdZr-TAga0

• Water heating - Wikipedia https://en.wikipedia.org/wiki/Water_heating
  
• Domestic Hot Water Service Systems - Design Procedure https://www.engineeringtoolbox.com/design-hot-water-system-d_92.html
  
• Solar Water Heating https://re.emsd.gov.hk/english/solar/solar_wh/solar_wh_to.html
  
• Solar Water Heating - Application Considerations https://re.emsd.gov.hk/english/solar/solar_wh/solar_wh_ac.html
• Inspection of domestic water heaters:
• Students are suggested to do an inspection of the domestic water heaters (gas or electric) at your residence or other suitable places to learn the relevant regulations and safety requirements. The following information will be helpful for the learning process.
• Domestic gas water heaters (EMSD) https://www.emsd.gov.hk/gsp/en/a04.html
  
• 《氣體安全(裝置及使用)規 例》 https://www.emsd.gov.hk/filemanager/en/content_278/Flueless_Gas_Water_Heater.pdf
  
• Safety Tips for Using Electric Water Heaters (EMSD) https://www.emsd.gov.hk/en/electricity_safety/publications/guidance_notes_guidelines/safety_tips_for_using_electric_water_heaters/
  
• Popular Water Heaters Buying Guide https://www.fortress.com.hk/en/promotion/recommended-water-heater
  

• Garrett, R. H., 2008. Hot and Cold Water Supply, 3rd ed., Chichester, West Sussex, U.K. [HKALL]
• WSD, 2020. Technical Requirements for Plumbing Works in Buildings (November 2020 version), Water Supplies Department (WSD), Hong Kong. https://www.wsd.gov.hk/en/plumbing-engineering/requirements-for-plumbing-installation/technical-requirements-for-plumging-works-in-bldgs/
  
• WSD, 2018. Handbook on Plumbing Installation for Buildings, Water Supplies Department (WSD), Hong Kong. https://www.wsd.gov.hk/en/plumbing-engineering/requirements-for-plumbing-installation/handbook-on-plumbing-installation/
• WSD, 2017. Hong Kong Waterworks Standard Requirements for Plumbing Installation in Buildings, Water Supplies Department (WSD), Hong Kong. https://www.wsd.gov.hk/en/plumbing-engineering/requirements-for-plumbing-installation/previously-used-documents-hkwsr-hpi/

• Domestic gas water heaters (EMSD) https://www.emsd.gov.hk/gsp/en/a04.html
  
• Guidance Notes for Household-Scale Solar Water Heating Systems at Village Houses https://www.emsd.gov.hk/filemanager/en/content_299/Guidance_Notes-solar_water_heating_system.pdf
  
• Safety Tips for Using Electric Water Heaters (EMSD) https://www.emsd.gov.hk/en/electricity_safety/publications/guidance_notes_guidelines/safety_tips_for_using_electric_water_heaters/