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Views: 0 Author: Site Editor Publish Time: 2023-09-19 Origin: Site
Location：Suzhou ROCHE
Units：LYDS-160ZW-R （3pcs cooling and heating CO2 heat pump）
Function：Offering cooling in sunmmer and heating in winter
Ambient：winter min -10℃，summer max 38℃
Requirements：Offer heating in winter，offer cooling in summer and also some heat for the AHU.company states that HFC is not allowed but only natural refrigerant.To avoid any risk of flammable and toxic, CO2 heat pump is the best choice.
Analysis： The AHU fan coil unit requires heating water supply 65℃, return 35℃ in winter.It requires cooling water supply 7℃, return in 12℃in summer.
Solution: Use the air/water combine CO2 heat pump. In Winter，units work as air source heat pump, offering space heating. In summer, work with water to water heat pump, offering hot water for the AHU for preheat, and Cooling water for the AHU for air condition.
Cost in summer
Device | gas boiler | central chiller | CO2 air/water heat pump | |
Function | hot water | cool water | hot water | cool water |
Energy | gas | electricity | free | electricity |
Efficiency | 85% | 350% | 420% | 320% |
Energy price | 4.39￥/m3 | 0.80￥/KW | 0.80￥/KW | 0.80￥/KW |
Hot water price | 30￥/ton | / | 0￥/ton | / |
Hot water/day | 24ton | / | 24ton | / |
Cooling/day | / | 4800KW | / | 4800KW |
Daily cost | 720￥ | 1097￥ | 0￥ | 1200￥ |
Daily saving | 617￥/day | |||
Risk | Flammable | none | none | none |
Cost in Winter
Device | gas boiler | CO2 air/water heat pump |
Function | heating | heating |
Energy | gas | electricity |
Efficiency | 85% | 320% |
Energy price | 4.39￥/m3 | 0.80￥/KW |
Hot water price | 30￥/ton | 8.7￥/ton |
Hot water/day | 165ton | 165ton |
heating/day | 4950￥ | 1435￥ |
Daily saving | 3515￥/day | |
Enviroment impact | light | none |
Risk | flammable | none |
