The Energy Challenge Greenhouses and indoor farms maintain warm, humid conditions around the clock. Heating can be 30 to 50 percent of operating cost, while transpiration loads create enormous latent heat in the exhaust air. Recovering Heat from Exhaust and Condensation Air-to-air plate exchangers recover sensible heat from ventilation exhaust; condensing heat-recovery units capture latent […]
Greenhouse Heat Recovery: Recycling Warm Exhaust to Cut Heating Bills
Cold-climate growers face a brutal conflict: crops need high air changes to control humidity and CO2, but every air change in winter throws away the expensive heat used to keep the house warm. In a grow facility the heating bill is often the largest operating cost, so recovering energy from the exhaust is one of […]