1. ASHRAE Handbook — HVAC Systems and Equipment, The American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc., Atlanta, GA, USA, 2000.
2. ASHRAE Guideline 12-2000, Minimizing the Risk of Legionellosis Associated with Building Water Systems, The American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc., Atlanta, GA, USA, 2000.
3. A case study of energy savings by using the water-side economizer system in a large office building in Montreal;Zmeureanu;Architect. Sci. Rev.,1995
4. S. Deng, Z. Song, K. Tan, Air-cooled heat pump with desuperheater: retrofit for year-round services hot water supply, Building Services Engineering Research and Technology, Vol. 19, No. 3, pp. 129–133, The Chartered Institution of Building Services Engineers, UK, 1998.
5. K. Tan, A Study of a Desuperheater Heat Recovery System Complete with a Reversely Used Water Cooling Tower for Hot Water Supply, Ph.D. Thesis, The Hong Kong Polytechnic University, Hong Kong, 2000.