The Urban Heat Harvester is an innovative concept to cool cities by harvesting waste heat by withdrawing thermal pollution from the urban atmosphere via city buildings utilizing their air-conditioning systems.
Thus moderating urban climate extremes and heat-stress experiences, increasingly livability and
While simultaneously recycling and transforming the heat into zero-emission renewable energy and energy equivalent (to heat water) by means of an Urban Heat Harvesting (UHH) device.
How can heat pollution be captured and re-used?
1. Capture the heat pollution
Draw waster heat from Urban Heat Island via building air-conditioning systems and capture at rooftop outlets of:
2. Convert or transform the heat pollution:
Heat extracted from inside buildings via air conditioners is not removed from the city but simply concentrated and displaced: from the inside to the outside.
In a summer's day in NYC when the air temperature is 32C/90F, the waste heat at street-level air-conditioner exhausts of CBD buildings is ±58C/136F – substantially hotter than the ambient temperature.
Each air-conditioner pumps superheated air out into the city.
There are in NYC alone, 6000 high rise, and 10 000 medium rise (approx 10 stories) buildings that are all pumping out such concentrated heat, not to mention all the individual window airconditioners.