UNIVERSAL HEATER Russian patent published in 2016 - IPC F28D15/02 

FIELD: heating.

SUBSTANCE: claimed invention relates to heat power engineering and can be used in development of heaters running on electric power and on gas combustion products. Claimed universal heater comprises the tubes arranged in the manifold to create one chamber and evaporation-condensation cycle. Said manifold is composed of two tubes fitted one into the other that feature larger diameter D₁ and smaller diameter D₂. Smaller diameter D₂ tube houses the extra tube of diameter D₃ to make the hot gas manifold. Gas burner nozzles with gas flow rate electric controllers are arranged along the manifold edges while electric heaters are fitted in the space between said larger and smaller diameter tubes. Steam ducts are secured to both sides of larger diameter tube top section and connected to steam manifolds while condensate ducts are arranged at the tube lower part. Heat exchangers are connected from above the steam manifold and closed by the jacket, their number making n₂ = 2-5. Outer surface of steam ducts and manifold larger diameter tube are coated with a heat insulation ply. The tank houses the heat carrier pickup. The heater is provided with the ACS. Fed electric power of heaters N is defined by the relationship Nk = αF₁(t_e-t_a)nm, where F₁ - is the surface of one heat exchanger, α is the air heat emission factor, t_e is the mean temperature of heat exchanger surface, t_a - mean air temperature, n is the number of heat exchangers, k = 0.8-0.97 is the factor of electric power-to-heat power conversion, m = 1.05-1.15 is the factor of neglected heat losses.

EFFECT: higher efficiency of heat transfer, lower metal input, expanded applications.

2 dwg