Technical Seminar Experience Sharing for Implementation of Multi-Function Heat Pump in Hotel Joinly organized with AMC, CAD & EVD, HKIE
Dr. Wong Kaixuan Be engaged in heat energy and cooling study from 1990 to 1994, University Stuttgart. Dissertation on heat pump study for the Doctor Cours Professor, NEU, 1994 to 1997. Chief engineer, Guangdong 吉荣空调公司,1997-1999. General manager of Central A/C Dep., Zhuhai Gree ( 格力空调 ), 1999-2001. To found Zhuhai Boka Cool Source Equipment Co., Ltd., 2001 Now.
Mr. Roger Lee Hong Kong Polytechnic graduate in BSE, 1989 More than 10 years hotel operation experience More than 20 years working experience Member of CIBSE Project Director of ECO Green Energy Saving Company
Hotel Energy Analysis Cooling 60% 15% 15% 10% Others Hot Water Lighting
Typical Design (most of the Hong Kong hotel design) Chiller To provide air conditioning Boiler To provide hot water year round
Average around 5%-10% increase per year (http://www.mongabay.com/images/commodities/charts/crude_oil.html)
Lastest Design in the past 10 years - To provide air conditioning Chiller Heat Pump Boiler - To provide 40 degree hot water - To provide 7 degree chilled water supply for air conditioning in summer only - To re-heat hot water to 50 60 degree for hot water use in Summer - To provide 50 60 degree hot water supply in Winter
Obviously this system cuts the energy cost. BUT
Weaknesses Complicated system Heat pump always operated in fully heat recovery mode On non-peak hours hot water consumption, heat pump will be easily hunting On/Off heat pump will disturb the central A/C system Large invesment More space requested High maintance cost Heat pump cannot 365 days operate to provide lower hot water production cost
Any other choice?
There is a new equipment
Hot water energy cost comparison (based on hotel in Kowloon, average temperature rise at 35 degree year round) electric tariff 1.0/KWH, diesel $8.2/litre, town gas $0.265/MJ
Multi function Heat Pump Seminar CIBSE Hong Kong Branch / HKIE Building Services Division / ASHRAE Hong Kong Chapter / Boka Cool Factory
ZhuHai Holiday Resort Hotel ( 珠海渡假村 )
Water Type (Dual Function) Heat Pump / Chiller (Cool only OR Cool/Heat Simultaneously)
Technical Talk - Multi-Function Heat Pump
Photos of Doctor Wang (Boka Factory) Mr. M.K. Liu (CIBSE Hong Kong Branch) Mr.Roger Lee (ECO Green Energy Saving)
Multi-Function Heat Pump, R134a (Cool only OR Cool/Heat Simultaneously OR Heating only)
It integrates an air cooled chiller, water to water heat pump and air to water heat pump into one body to perform : Cooling mode only (act as an air cooled chiller) to provide 7 chilled water supply Cooling & Heating mode (act as water to water heat pump) to provide 7 chilled water supply and 50 hot water supply Heating mode only (act as air to water heat pump) to provide 50 hot water supply
Job Reference
Job Reference 萬方金莎酒店 ( 河南焦作 ) 真善美大酒店 4 星级 江門逸豪五星級酒店
序號用戶名稱地區 1 珠海市婦幼保健院 2 珠海市香洲區人民醫院 3 中山三鄉人民醫院 4 廣州醫學院第一附屬醫院 5 廣西富川縣人民醫院 醫院項目 6 珠海北京酒店 7 珠海南灣國際大酒店 8 珠海南油大酒店 9 珠海益健假日酒店 10 珠海鄉泉酒店 11 珠海金口岸假日酒店 廣東珠海 12 珠海金域酒店 13 海灣大酒店 14 珠海益健保健中心 15 珠海太平洋保健中心 16 珠海華駿酒店天富健康中心
序號 用戶名稱 地區 17 香港珀麗酒店 香港 18 澳門皇都酒店 澳門 19 廣州珀麗酒店 20 廣州歐亞酒店 21 廣州鄉土華豐酒店 廣東廣州 22 廣州醫學院第一附屬醫院 23 中山古鎮國貿大酒店 24 中山三角真善美大灑店 25 中山東升匯景酒店 26 中山市富華酒店 27 中山小欖皇冠假日酒店 28 中山市星寶休閒中心 廣東中山 29 中山大三角酒店 30 中山世紀廣場 31 中山麗閣商務酒店 32 中山坦洲豪益假日酒店 33 深圳富臨酒店 34 深圳麗灣酒店 35 深圳百合酒店 廣東深圳 36 深圳金帝都酒店
How does it work?
Multi-function heat pump system
Multi-function heat pump system (MFH) Air source multi-function heat pump Hot water system Storage Hot Water Tank Fan Coil Condensing Fin Heat Exchanger Guest Room Heat Recovery Condenser Evaporator Compressor
Mode of Operation Mode A:Cooling and hot water supply in Summer (Partially heat (sensible heat) recovery) (for non-peak hot water demand period) Mode B:Cooling and hot water supply in Summer (Fully heat (sensible & latent heat) recovery) (for peak hot water demand period) Mode C:Hot water supply only in Intermittent Weather Mode D:Heating and hot water supply in Winter
Partly heat recovery (sensible waste heat recovery) Condensing Fin release waste latent heat to ambient Sensible heat recovered to provide hot water supply To provide chilled water supply Feature: In Summer, MFH operate to provide 7 degree chilled water & 50-60 degree hot water to meet the non-peak hour (00:00-19:00) hot water demand.
Condensing Fin stop working, no heat will emit ambient Fully heat recovery (sensible & latent heat recovery) Sensible & latent heat recovered to provide hot water supply To provide chilled water supply Feature: In Summer, MFH operate to provide 7 degree chilled water & 50-60 degree hot water to meet the peak hour (19:00-00:00) hot water demand.
Condensing Fin absorbed heat from ambient. Hot water supply only (for Intermittent Weather) No Cooling and Heating ambient heat (3/4) and compressor heat (1/4) are recovered to provide hot water supply Features: To produce 50-60 degree hot water supply. Reduced hot water energy cost up to 60% against electric/town gas/diesel boiler
Heating and Hot water supply (In Winter) Condensing Fin absorbed heat from ambient ambient heat (3/4) and compressor heat (1/4) are recovered to provide hot water supply Part of heating energy to provide space heatingt Features: To produce 50-60 degree hot water supply for portable use & 45-50 degree hot water supply for space heating. Reduced hot water energy cost up to 60% against electric/town gas/diesel boiler
Say a Hongkong hotel,cooling period is 10 month, daily hot water demand is 100 m 3. Annual hot water demand: Case Study
Case Study
Case Study
Case Study
Besides, it reduce Carbon Emission up to 1000 Ton annually (compare to electric boiler, 100m 3 daily hot water demand)
Multi-function Heat Pump Can operate 365 days year round Overall COP higher VS Chiller+Heat Pump+Boiler Save more than 50% annual energy cost than traditional Can provide stable chilled water & hot water supply Without disturbance to the central A/C system Reduce operating hours of the main chiller plant Provide higher hot water temperature (up to 60 degree) No need boiler to back up especially in Winter Less maintenance cost
Conclusion - Environmental Friendly - Reliable & Convenience - Energy saving - Save Investment & Space - Less Maintenance During selection of Equipment, it shall be taken into consideration
Enquiries Mr. Roger Lee ECO Green Energy Saving Company Project Director Contact Telephone 3691-8549 / 60776087 Contact Email roger.ecogreen@yahoo.com.hk Doctor Wang Boka Cool Source Equipment Co.Ltd General Manager Contact Telephone 86-15018914061 Contact Email eming_lee@qq.com
Thanks