“节能蒸发和被动冷却”.pdf

1、Marco SchmidtFederal Institute for Research on Building,Urban Affairs and Spacial Development(BBSR)Technische Universitt Berlin,Institute of ArchitectureGreen Cooling Summit 21.5.2025:“Energy efficient Evaporative and passive Cooling”Green Cooling Summit 2025,May 20-21Never use electricity to cool a

2、 building!inefficient/unsustainable/unhealthy!680 kWh Cold310 kWh Electricity(annual COP 2,2)990 kWh Sensible Heat Release Outside+HFC phase down:most of the common refrigerants are not available any more the next years!Green Cooling Summit 2025,May 20-21Instead,evaporate water!Institute of Physics

3、building,HU Berlin,5 courtyards,south facade,9 of 24 facades greenedGreen Cooling Summit 2025,May 20-21Mean daily evaporation of a greened facadeAdlershof Physics building 15.7.05-14.9.05 generated evaporative cooling:280 kWh per day per facade03,46,810,213,61720,405101520253000:0001:0002:0003:0004:

4、0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00kWh/mdmm/dHof 5,1.OGHof 5,2.OGHof 5,3.OGSdfassade,1.OGSdfassade,2.OGSdfassade,3.OGGreen Cooling Summit 2025,May 20-21Surface temperature of glassbehind conventional blindsand behind green plants06:00-18:

5、00 hBlinds:.34,5 C Plants:27,0 CGoal:26,0 after DIN 4108Blinds:.+8,5 K Plants:+1,0 K8.5 x larger longwave emissionsinto the building10,010,015,015,020,020,025,025,030,030,035,035,040,040,045,045,050,050,055,055,08/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/2

6、2 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 8/228/22 Glas temperature behind blindsGlas temperature behind plantsPhysics Build