The domestic horticultural area is 53,109ha as of 2018, of which the heating cultivation area is 17,399ha, which is about 32.8% of the total cultivation area being heated (MAFRA, 2019a; 2019b). In the heating method, the oil-heating method accounts for about 81% of the entire heating method, so oil dependency is very high. In farms grown for facilities, it is inevitable to be sensitive to fluctuations in oil prices. In this situation, the proportion of heating costs in production costs is very high, around 30~40%, and oil is also dependent on imports, so it is in a very disadvantageous position in terms of trade balance (Lee et al., 2007). In order to overcome these problems and the burden on the farm, efficient management and reduction of energy are required. Energy saving measures for facility horticulture can be divided into energy saving by heating and energy saving by thermal insulation (Chung et al., 2009). Among them, the energy saving by thermal insulation is to save energy through the improvement of thermal insulation by using thermal insulation materials with excellent thermal insulation properties, and it can be easily performed through addition and partial modification to the existing thermal insulation system. (Kim et al., 2007; Lee et al., 2007). Various commercially available multi-layer insulation curtains are produced and sold by various companies, but as the thickness of the insulation curtain increases to increase the insulation, there are several problems such as increased load and reduced ventilation (Chang et al., 1996).
In this paper, to solve these problems, the insulation performance of the conventional multi-layer insulation curtain was compared and analyzed to draw out the problem. Through this, an insulation material using silica aerogel that can replace the existing insulation material was produced. A new combination of multi-layer insulation curtains was installed on-site to compare and analyze the insulation and economics of conventional multi-layer insulation curtains to develop a multi-layer insulation curtain that can be distributed and commercialized.