Aging room is widely used in hot air circulating baking and curing coating line. At present, tubular box-type aging room is widely used. It is a kind of "gas-gas" heat exchange type aging room, a kind of gas running in pipe, a kind of vertical cross-type scouring heat transfer outside the pipe. The heat transfer coefficient of gas-gas heat transfer is very low. It needs to increase the heat exchange area to meet the heat exchange, resulting in resistance to heat. High-temperature metal consumes a large amount, its volume is huge, the virtual contact thermal resistance between the base tube and the fin is flexible, the heat transfer effect is poor, the manufacturing cost is high, and the flow resistance in the gas pipe is large, which leads to a large power consumption. At the same time, the connection between the tube plate of radiation heating surface and the tube is often cracked due to temperature difference stress; the tube is penetrated due to oxidation, wear, overheating and dew point corrosion. As a result, flue gas and air penetrate, and can not be maintained; tubular aging room is a heat conducting aging room with heat release from the outer wall of the inner wall of the tube, high exhaust temperature, and thermal efficiency is only 40-50%.
Heat pipe is a kind of heat transfer module with high conductivity. It transfers heat through evaporation and condensation of working substances in a fully enclosed vacuum tube. Its thermal conductivity is thousands of times higher than that of excellent thermal conductive materials (copper, silver, etc.). It is called "superconducting heat body". The heat transfer characteristics of the secondary wall of heat pipe is an important guarantee to realize safety and reliability and long-term operation. According to the different heat exchange temperatures, different heat transfer carriers, working fluids, can be used to meet the requirements of low, normal, medium and high temperature heat transfer sections.
全自动燃油（气）热管老化房是利用热管管内工质相变超导换热，直接制备洁净热空气的高效无压换热设备，其结构是用耐高温管板将换热箱体分隔成上部为热空气发生室，下部为燃烧炉膛和烟道两个永不能贯通的分箱体，热管由锥形卡环二道石棉攀根密封镶套在管板叉排孔中，不锈钢热管吸热段伸入管板下部炉膛受辐射换热，高频焊翅片热管吸热孔中，不锈钢热管吸热段伸入管板下部炉膛接受辐射换热，高频焊翅片热管吸热段伸入管板下部炉膛后的烟道对流换热，吸收燃烧器燃烧热量，工质低温吸收汽化潜热汽化，在真空管内仅以微小的温（压）差以超音速的速度将热量输送到置于管板上部热空气发生室的高频焊翅片热管放热段，在逆向气流冲刷下，向洁净空气释放出 凝结潜热，快速加热空气，工质冷凝成液体靠重力沿管内壁回流到热管下部吸热段，再吸热汽化，循环往复，每分钟近千次的速度将燃烧热量向空气释 放。热管老化房起动快、升温快，经实测热能利用率达84.3%是目前最先进的热空气发生炉。近二十台热管老化房通过二年左右在涂装、烘干行业的应用完全达到了设计要求。
Fully automatic fuel (gas) heat pipe aging room is an efficient and pressureless heat exchanger which directly produces clean hot air by using phase change superconducting heat transfer of working fluid in heat pipe. Its structure is to divide the heat exchange box into two parts: the upper part is a hot air generating room and the lower part is a combustion furnace and flue which can never be connected. The heat pipe is encased in a conical clasp ring with two asbestos climbing roots. In the fork row holes of the tube sheet, the stainless steel heat pipe heat absorbing section extends into the lower furnace of the tube sheet to receive radiation heat transfer. In the heat absorbing hole of the high frequency welded fin heat pipe, the stainless steel heat pipe heat absorbing section extends into the lower furnace of the tube sheet to receive radiation heat transfer. After the high frequency welded fin heat pipe heat absorbing section extends into the lower furnace of the tube sheet, the flue convection heat transfer absorbs the combustion heat of the burner, and the working substance absorbs vaporization latent heat at low temperature. The heat is conveyed to the heat release section of high frequency welded fin heat pipe placed in the hot air generating chamber on the tube plate at supersonic speed only with a small temperature (pressure) difference in the empty tube. Under the reverse flow scouring, latent heat of condensation is released to clean air, and the air is heated rapidly. The working fluid condenses into liquid by gravity and flows back and forth along the tube wall to the heat absorption section at the lower part of the heat pipe, then the heat is absorbed, vaporized and circulated back and forth. The speed of nearly a thousand times per minute releases heat from combustion into the air. The heat pipe aging room is the most advanced hot air generator with fast start-up and temperature rise. The measured heat energy utilization rate is 84.3%. Nearly twenty heat pipe aging rooms have fully met the design requirements after two years'application in painting and drying industries.
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