Dr. Kiattisak Saengpradit, lecturer at the Engineering Department, Rajamangala University of Technology Thanyaburi, invented an energy-saving apparatus, N3-save, which promises to enhance the efficiency of air conditioners.
“This apparatus cools down the inflow air temperature in the compressor unit, to about 25-28 degrees Celsius. The cooler air will then pass through the evaporator coil, where the coolant is heated to 40-42 degrees Celsius. When the outside air temperature, which is being pumped into the compressor is as high as the temperature inside the evaporator coil, the cooling system is not as effective.
“With this apparatus, the inflow air temperature is much cooler, thus enhancing the compressor’s efficiency up to 30-40%,” said Dr. Kiattisak.
The N3-save apparatus is consisted of: (1) a container unit for collecting water from compressed air that flows out from the evaporation coil; (2) a sealant unit that prevents water from evaporating from the container unit; (3) water filter unit, for filtering out dirt and other air residues, before it flows into the container; (4) water transport unit, which is attached to the container and water pipe; (5) water dispenser, which is connected to the water transport unit; (6) evaporator coils, made from aluminum, arranged in slanted, alternate rows. These coils are placed horizontally, to increase the surface contact with air, thus enhancing the cooling efficiency.
Initial testing using a 12,000 BTU air conditioner in a 30sqm room reveals that the air conditioner with N3-save unit uses less time to cool down the room, a result of the lowered air inflow temperature. When the compressor works more efficiently, it also uses less energy and increases the EER rating.
For more information about the N3-save unit, contact Dr. Kiattisak Saengpradit at 081 493 2489.