Gas heater

About: Gas heater is a research topic. Over the lifetime, 1799 publications have been published within this topic receiving 6169 citations.

Thin film formation device utilizing organic metal gas

Abstract: PURPOSE: To make it possible to prepare a film at low noise under good control perfor mance and hence obtain an expected quality by installing an organic metal gas prepara tion excitation chamber which dissociates a carbonyl organic metal and forms excita tion species, and a reaction chamber which houses a substrate, dissolves and deposits the excitation species. CONSTITUTION: When a material is preheated only with a gas heater, the temperature of a preheating device 4 in an excitation device 7 is heated up to a proper temperature at which excitation species required to produce high quality film are available and dissociation reaction products are monitored with a gas concentration detection device 13, and the temperature, pressure and the supply of feed gas are controlled with the preheating device 4, a pressure control device 6, a carrier gas of first class and mass flow controller 5, which makes it possible to avoid the formation of carbide, oxide and the like. For example, when W(CO) 6 is prerheated under the aforesaid controlled condition, the ligand CC is dissociated so that only the excitation species W(CO) x (x = 0 to 5) may be formed. It is, therefore, possible to obtain a high quality film under excellent controlled performance by introducing the excitation species into the reaction chamber by way of carrier gas and using thermal decomposition based on the heating of a heater without increasing the temperature more than required. COPYRIGHT: (C)1992,JPO&Japio

Design and development of a thermoelectric cogeneration device integrated in autonomous gas heaters

Abstract: An autonomous heat-radiating gas heater for commercial outdoor environments has been selected as a test case for implementing cogeneration in autonomous gas heaters and stoves, permitting its installation and operation without the need of a connection to the electrical network A thermoelectric generator (TEG) was selected for this purpose[1], designed for converting an amount of the produced heat into electrical power for auxiliary (ventilation, battery recharge) or ancillary functions (high efficiency LED illumination) The design approach, the layout and structure of the TEG are discussed, as well as the constraints for its integration in the existing gas heater Design features and main components are examined: hot side heat collector for capturing heat from the flame; thermoelectric module (TEGM) technology and model selection; natural convection heat radiator at cold side; analysis and optimization of the thermal chain; TEG's assembly and its design as a whole A prototype has been built and tested, its functional behavior has been modeled through multi-physics numerical simulation[2] to allow for further optimization and extrapolation of the results towards larger and/or more complex designs A patent application has been issued jointly by the authors, covering the design hereinafter described

Drier for fluidized bed

Abstract: The utility model discloses a drier for a fluidized bed, which is applied in pharmaceutical production. The drier is composed of an airflow chamber, a material chamber, a dust catching chamber, a blast pipe, an exhaust pipe and a fan, wherein the airflow chamber, the material chamber and the dust catching chamber are sequentially connected with one another from bottom to top; the fan is communicated with the airflow chamber by the blast pipe; the exhaust pipe is arranged at the top of the dust catching chamber; a feed hopper is arranged on the side wall of the material chamber; and a filter is arranged on the blast pipe which is also provided with a gas heater. With the adoption of the work form of the hot airflow, the effective heat transfer coefficient is increased, and the moisture is carried off by the flowing hot airflow, therefore, fine powder materials are dried more thoroughly, and the working efficiency is improved; as the filter is additionally arranged for purifying the air, thereby greatly reducing the pollution to the materials; in addition, the drier also has the characteristics of low noise and long service life, is steady to operate and is convenient in maintenance.

Gas heater of a regenerative type

Abstract: PURPOSE:To provide a heater characterized in that a gas burner heating through a heat exchanger and, during this heating, a heating with a regenerator heated by the burner can be switched without any loss.