• 보일러설비
• /
• s.77
• /
• pp.63-67
• /
• 2000

• 보일러설비
• /
• no.12 s.155
• /
• pp.92-103
• /
• 2006

• 보일러설비
• /
• no.7 s.162
• /
• pp.74-75
• /
• 2007

최고 35% 가스비 절약되는 보일러 기술을 '가스비 다이어트'로 비유 현영이 깡통로봇(기존보일러)에게 가스비 다이어트를 가르치는 코믹한 스토리 S라인 주제곡과 함께 현영의 다이어트 비법이 공개되어 광고 주목도 극대화

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.7
• /
• pp.4052-4056
• /
• 2014

These days, household condensing gas boilers are an obligatory trend. The use of environmentally-friendly boilers that emit less pollutant, such as CO and NOx, are strongly recommended. In this paper, heat flow analysis of the additional inner groove in the tube of the secondary latent heat exchanger was studied to increase the efficiency. A 20% difference in the heat transfer area was obtained with the addition of an inner grove, which showed an increase in the amount of heat transferred. This was confirmed using three-dimensional numerical analysis. With the addition of an inner groove, the exit temperature increased by $1^{\circ}C$. This increase in exit temperature was considered to be a substantial increase in the efficiency of the condensing gas boiler.

• The Magazine for Energy Service Companies
• /
• s.4
• /
• pp.52-54
• /
• 2000

• 보일러설비
• /
• no.2 s.169
• /
• pp.100-102
• /
• 2008

가스보일러의 소비효율 일원화 여부를 가늠할 수 있는 연구 결과가 다음달 발표될 예정인 가운데 관련 업계가 실익 계산을 위한 주판알 튕기기에 한창이다. 현재는 일반 보일러와 콘덴싱 보일러가 별도의 에너지소비효율제도를 적용받고 있는데 두 보일러를 통합한 단일 적용 방식으로 바꾸는 것에 대한 타당성 연구 작업이 가스안전공사에서 진행중이다. 하지만 소비효율 등급이 일원화될 경우 고효율 에너지 기자재 인증 대상에서 보일러가 제외될 것으로 알려지면서 이와 관련한 관련 업계의 계산이 복잡해지고 있다.

• Journal of Energy Engineering
• /
• v.22 no.3
• /
• pp.307-311
• /
• 2013

Heating and hot water has accounted for 68% of Korea's household energy usage. Boiler makes up the bulk of the heating and hot water production. Hence a highly efficient boiler is needed in order to reduce energy consumption. A condensing boiler that recovers latent heat is known to be highly efficient. However, it is expensive and takes more space to necessitate research for improvement. In the present study, we investigated condensation heat transfer of a surface roughened by etching treatment. The etched plate showed 9.2% increase in heat transfer compared to original plate.

• Journal of the Korean Institute of Gas
• /
• v.5 no.1
• /
• pp.45-51
• /
• 2001

Catalytic combustion is the environmental-friendly technology, which has been applied to a variety of areas for industrial and domestic use in recent years. Accordingly, this study performed the development of the catalytic manufacturing technology for the high temperature and of the catalytic combustor in priority, which were aimed to be aimed to a commercialized condensing boiler. Palladium(Pd) of a noble meta] was used as a catalyst for the high temperature and supported on $alumina(Al_{2}O_{3})\;and\;zirconia(ZrO_2)$ in constant weight ratio. Activity of Pd catalysts is compared and analysed in the catalytic combustion of natural gas. The ratio of $Pd/Al_{2}O_{3}\;=\;4$ was found to be better than any other weight ratios in activity and durability. The performance examination of catalysts and of combustion through the plate-type combustor made it possible to be developed the cylindrical-type combustor which has increased combustion area. Catalytic combustion condensing boiler of 25,000 kcal/hr class was also developed, which had the optimum combustion condition at the no221e of 5.95mm and the orifice of 21mm. This condition was determined through the performance experiments of catalytic combustion condensing boiler to which the cylindrical-type catalytic combustor was applied.

• Proceedings of the SAREK Conference
• /
• 2007.11a
• /
• pp.34-39
• /
• 2007

Condensing gas boiler units may make a big role for the reduction of energy consumption in heating industries. In order to decrease the energy consumption of a condensing gas boiler unit, the effective operations and controls of the system are necessary. In this study, mathematical models of a condensing gas boiler system were developed and programmed in order to predict dynamic behaviors of the system. These include dynamic models for a blower, a gas valve, a pump, a burner, a boiler heat exchanger, and a hot water heat exchanger. Control algorithms for the control of a gas valve, a blower, and a pump were also assumed. Simulation results showed good predictions of the dynamic phenomena of a boiler system. Therefore, the simulation program developed for this study may be effectively used for the development of control algorithms of the boiler system.

• Korean Chemical Engineering Research
• /
• v.50 no.2
• /
• pp.277-281
• /
• 2012

This work is concerned with a plan for preventing accidents of CO gas leak from gas boilers, involving the enforcement of installations of both CO alarm system and condensing boilers, and financial support of government grants. If amongst 1,460,000 beneficiaries of basic livelihood security, one million households in use of gas boilers receive 3-year support of 200,000 won, the difference of prices between common and condensing boilers, the government grants would be 2,000 billion won. If 3 million common householders are in 3-year support of 100,000 won, government grants would be 3,000 billion won. Therefore, 3-year grand total of government grants would be 5,000 billion won. Finance for government grants can be purveyed from energy saving; yearly 2,000 billion won of energy saving by enforcing to replace one million existing boilers with condensing boilers, leading to 2 trillion won of energy saving for 10 years. In this way, 6,000 billion won of 3-year grand total of government grants for CO alarm system and condensing boilers can be purveyed. The rest amount would be fundraised for energy savings. We claim that our proposal can make an achievement of more than 50% reduction of CO leak accidents during 10 years.