alternative
apartment
blue
building
climate
collector
convection
day
device
ecology
energy
environment
exchange
exterior
flat
heat
heating
home
liquid
mediterranean
nobody
outdoors
panel
passive
power
renewable
residential
roof
rooftop
sky
solar
source
south
station
sun
sunlight
sunny
sustainable
system
tank
technology
thermal
thermosiphon
warm
warming
water
定額
Thermosiphon systems with solar collector and water tank on the rooftop of a high apartment building, alternative energy by sun and passive heat exchange used in warm countries, blue sky, copy spaceの素材 [FY310204580547]
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