supply of natural water cooler with hybrid cooling mechanismnatural water cooler with hybrid cooling mechanism,natural water cooler with hybrid cooling mechanism, natural evaporative solar based cooling system + grid power operated energy efficient back up cooling system with stainless steel body & vinyl coating. gross storage capacity: 150 ltr, cooling capacity: 50 lph, storage tank material: stainless steel grade aisi-304. unit size : 30 l x 30 w x 80 h, temperature range : 15 degree c to 27 degree c, configuration: (1) 10 inch x 5 u poly propylene filter cartridge with bowl (2). solar operated dc fan for forced air circulation (3). 25 watt solar pv module with ms frame (4). 470 nos. of louvers for natural air circulation & 42 nos. of helical copper rings for evaporative cooling. (5). energy efficient refrigeration system for back up cooling. (6). touch based digital water temperature controller (7). refrigerant used ecofriendly. (8) spreri (sardar patel renewable energy research institute) test report require (9). data sheet of used material issued by oem only & qap report to be submitted along with material supply. make: notion model: natura cool-duo (nwc 2.0?hybrid cooling system with active copper) or equivalent. [ warranty period: 60 months after the date of delivery ]