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전상문 大田産業大學校 1996 한밭대학교 논문집 Vol.13 No.1
To develop heating water that is high efficiency and lower price, natural conveclive soalr energy system which is puling onmarkt modiket convectire solar energy system. For the cast down of maunfacture and increasing of the system efficency, brazen pipe in heat exchanger of rediation correction system switched to smaller size, collector with brazen switched to aluminum film which is 70μ thickness, and doped with silicon carbonblack high priced heat storage thak subsituted to low priced polyethylene drum, and reconstructed heat exchanger with staituted to low priced polyethylene drum, and reconsrucbed heat exchanger with stainless steel which is attached fins and check valve for forced convection of heat transfer media. For enhancement of heat storage efficiency poly propylene bag with Na_2SO_4 hydration heat. The solar energy system which is improved in this research was simple manufactring porcess and increase of heat efficiency due to forced convection system. In this results, it can be conclude that this system is move valuable in economically than conventional solar energy system.
Benzene-산소의 고온에 있어서의 原素反應의 속도정수
전상문 大田開放大學 1984 論文集 Vol.1 No.-
The rate constants of several important elementary reactions in the high temperature reaction of benzene and oxygen were determined by use of the shock tube method and computer simulations. Benzene with or without oxygen which was diluted with argon , was heated behind the incident shock wave. The change in concentrations of biphenyl and carbon monoxide produced with time were monitored, by measuring the UV absorpeion at 3060 Å and the infrared emision at 4.87μ. Experimental conditions were as follows. The temperature range was 1400∼1800K, the initial concentration of benzene was ( 1.1∼5.5)×10^-7mol/ℓ, and the ratio of oxygen to benzene was in the range from 0 to 1. The reaction times, Jc_l2 H_10 and J_10, which were the times required respectively for the concentration of biphenyl and carbon monoxide to reach the certain values, were measured. Their dependencies on the initial concentration of benzene and oxygen, and on the reaction temperature were determined.
전상문 忠州大學校 1980 한국교통대학교 논문집 Vol.13 No.3
무연탄 회분을 비료로서 利用하기 위하여 연구를 하였다. 무연탄 회분은 2% 시트르산 용액중에서는 가용물질이 대단히 적으나 (하)燒된 dolomite를 첨가한 무연탄 회분은 마그네슘, 칼슘, 황, 無水珪酸 등의 가용분이 많아지므로 비료로서의 효과가 있음을 알 수 있었다. This experimental study was carried out to examine the utilization of the anthracite ash as a pertieer. It was found that the ash had very small amount of the soluble matters in 2% citric acid solution, therefore it is proved ineffective as a fertilizer. When the small amount of calcinated dolomite was added to the anthracite, it was observed that the resulting ash showed much increased solubility of maqnesium, Calcium, surfur and silica etc in tho citric acid solution. So it is concluded that the ash of the mixture of anthracite and Calcinated dolomite wowld be one of the useful soil-conditioner and supplyer of nutrients.
전상문,김종식 啓明大學校 産業技術硏究所 1997 産業技術硏究所 論文報告集 Vol.19 No.2
To develop hot water generating system using solar energy. The collectors, black crome plating and carbonblack have been applied in cheaper and simpler processes, and sillicon oil has coated for the double glass effect as well as the absorption of radiant heat. The wood, processed with special chemicals, not Aluminum, has been used for the cases of collectors without any welding between copper plates and copper pipes. The thermal energy storages, cheap polyethyllene tank of over 3 drum volume, have been used instead of the current expensive thermal energy storages, and heat carriers have been circulated forcefully by both check values and low power pumps. Na₂SO₄·10H₂O has been packed with special plastic materials and put into the thermal energy storages, which has brought about the thermal energy storage effect.
全相文 大田開放大學 1986 論文集 Vol.5 No.-
By using a thermal diffusion column a; a reactor, catalytic decomposition of hydrogen sulfide and enrichment of the produced hydrogen by one process were attempted. We expected that a reaction accompanied with continuous separation of the products, i.e., hydrogen and sulfur, could increase the hydrogen yield in comparison with the reaction carried out in an ordinary reactor having homogeneous temperature distribution. Three thermal diffusion columns made of pyrex glass tubes and equipped with a quartz pipe heater were used (Fig.1 and Table.1) suface of the hot wail was coated with catalysts us chromiun sulfide, cobalt sulfide, nickel sulfide or iron sulfide. Measurement was carried out in a batch system, maximum presure reaching ca. 1.5 atm. The initial activity of tile catalysts at the hot wall temperature (Th) of 500℃ in column C was in the following order: chromium sulfide > cobat sulfide > nickel sulfide > iron sulfide (Fig.3). Catalytic activity did not decrease during a 30 - 40 hrs operation. Separation of hydrogen from hydrogen / hydroge sulfide mixture (fig.2) and effects of the hot wall temperature and the wall distans (Fig.4) were also studied. In addition, the distribution of hydrogen concentration along the column was determined on column A (Fig.5). The results agreed with the expectatior: e.g, 40% hydrogen sulfide was decomposed and 90% hydrogen was obtained from the top of the thermal diffusion column in the best operating conditions (column A, Th=500℃, catalyst=chromium sulfide).