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학위논문 동서

A.Smith와 D.Ricardo의 分配論에 관한 比較硏究

주영인

부산: 東亞大學校 1983

72p; 26cm

학위논문(석사) 東亞大學校 大學院: 經濟學科, 1983

영문초록 : Systems selection should be compromised between performance and economics. Factors to be considered are the user's requirements, the designer's experience, local building codes, initial cost, energy efficiency and projected operating costs. Any of these factors can affect the selection of systems. Because HVAC ( Heating, Ventilating, and Air-Conditioning ) equipment systems of hotel, which is consuming a large amount of energy as hotel recently being large and luxurious in scale and quality, has been operated all year long, the diversity of use for all areas of hotels makes heating and cooling load profile researches the key to minimum selection requirments, avoidance of unnecessary oversizing and duplication, and low operating cost design. Therefore, this study was investigated the related architectural design and equipmental factors, and the monthly energy consumption(l988~1993 year) of deluxe hotel by region in Seoul, Pusan, and Cheju. For a calculation of energy cost for LCC, this research was aimed at proposing the estimated regression equations for total and HVAC energy consumption of deluxe hotel using by the method of SAS (Statistical Analysis System), and actual energy consumption was compared with the predicting energy consumption. Additionally, this study attempted to propose economic HVAC equipment system of deluxe hotel which is hypothectical buildings used 4 HVAC equipment system alternatives charaterized by building scale and region using Life Cycle Costing including initial costs, service life, interest, energy costs, taxes, operating expenses, depreciation, inflation and cost escalation. Hypothectical building characterstics and HVAC equipment capacity were calculated by a single regression equation which had been analyzed 19 deluxe hotels by region, and HVAC energy consumption was calculated by an estimated regression equation of HVAC energy consumption unit(Mcal/㎡y), excluding plumbing facilities, electric lighing, heating water, etc., through heating and cooling period in 19 deluxe hotels. The results investigated through these researches were as follows; 1) Regression equations of capacity for boiler(B:×10^(3)kcal/h) and refrigerator (R:USRT) according to gross area(A:㎡) in deluxe hotel were; B=5700 ln(A)-52617, R=0.0284A-24. 2) Negative dependent variables reducing energy consumption were the ratio of loadging area by gross area, packaged air conditioner capacity in total energy, and were the ratio of window area by wall area, boiler capacity per HVAC area, electric lighting load density, generator load density in HVAC energy. 3) Dependent variables of predicted HVAC energy consumption which be caculated energy cost for total cost were among architectural elements; volume ratio, SFR(Surface Floor Ratio), and were among HVAC equipment elements; boiler and refrigerator capacity, refrigerator capacity per gross area, and were among motor facilities elements; HVAC transport capacity, HVAC motor facilities load density, the number of elevators, and cooling degree day. 4) From Life Cycle Costing (Life Cycle=15 years) resulted by Present Worth Method for 4 HVAC equipment system alternatives in 3 hypothectical deluxe hotel buildings(Gross area:25,000㎡, 50,000㎡, 75,000㎡), the results were as follows; The ratio of initial cost for total cost had increased by building scale in the second alternative(Part ice storage system) which used night electric power 23.7%, 27.0%, 28.6% respectively as higher thermal storage tank installment cost, and it had decreased by building scale in the first alternative (Conventional system) which used normal electric power, the third alternative(Absorption refrigerator system), and the fourth alternative (Absorption chiller/heater system) which used both town gas. The ratio of energy cost for total cost had decreased by building scale in the second alternative(Part ice storage system) 67.6%, 63.2%, 61.7% respectively as lower night electric power cumulation price, and it had increased by building scale in the first alternative(Conventional system), the third alternative(Absorption refrigerator system),and fourth alternative (Absorption chiller/heater system). 5) According to the change of service life for HVAC equipment system in hypothectical deluxe hotel building(Gross area : 50,000㎡), total cost of LCC_(15) and LCC_(20), on a basis of Absorption refrigerator system which is an economic alternative for LCC_(10), were 1.60, 1.94 times in Conventional system respectively, 1.87, 2.22 times in Part ice storage system respectively, 1.30, 1.56 times in Absorption refrigerator system respectively, and 1.31, 1.57 times in Absorption chiller/heater system respectively.

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