Dudkin K. Improving tubular and safety of green-house heating systems with tube gas heaters

New technical decisions were proposed for green-house heating systems with tube gas heaters. There are gas heaters with recirculation of are-gas mixture, gas heaters with natural circulation of are-gas mixture, gas heaters "are-water", gas heaters with some counters, gas heaters for are-water green-house heating systems. For calculation of hydraulic and thermal regimes of new gas heaters were developed mathematical models as models of hydraulic circuits with distributed parameters. Algorithms for numerical calculation of regime parameters for new gas tube heaters were developed. By numerical experimentation was establish possibility of drop in radiant heat density for recirculation gas heaters 3,3 times more than radiant heat density for traditional gas heaters at high global efficiency - 91,7% Experimental investigations establish that new tube gas heaters correspond to the Ukraine standards for gas equipment.