Operaton Cost Model for Feed Production

박경규,정도섭,찰스 디요,Park, Kyung Kyoo,Chung, Do Sup,Charles, Deyoe 한국농업기계학회 1985 바이오시스템공학 Vol.10 No.1

배합사료생산(配合飼料生産)에 소요(所要)되는 운전비용(運轉費用)을 추정(推定)하기 위(爲)하여 소요(所要)에너지, 소요노동력(所要努動力), 유지(維持) 및 수리비(修理費)를 분석(分析)하여 공장규모(工場規模) 및 사료생산종류(飼料生産種類)에 따른 수학적모형을 개발(開發)하였다. 에너지비용(費用)은 전기비용(電氣費用)과 연료비용(燃料費用)으로 구분(區分)하였으며 소요노동력(所要努動力)은 생산노동력(生産努動力), 관리자노동력(管理者努動力) 그리고 유지(維持) 및 수리노동력(修理努動力)으로 구분(區分)하였다. For the purpose of estimating the operating cost for feed production, energy consumption, labor requirement, maintenance cost, and supplies and miscellaneous costs are analyzed and developed as mathematical models. Mathematical model for energy usage Consists of electrical energy, boiler fuel energy and vehicle fuel energy. The mathematil model for electrical energy usage for the swine and poultry feed mill and the complete pelleted feed mill are developed, based on the general model mill and the computer program for its design developed in Kansas State University (Park, 1982). Also, the boiler fuel energy consumption model and the vehicle fuel energy consumption model are developed by analyzing the boiler system and the vehicle operation in the warehouse. In order to develop a mathematical model for labor requirement, the data that Vosloh (1968, 1976) constructed for labor requirement in his model mill are used by assuming that his model mill is similar to this model, in terms of labor assignment standards. Maintenance and repair costs are obtained by assuming to be 5.5% of the total capital investment cost. Also, supplies and miscellaneous costs are estimated by using Vosloh's report and it is approximately 0.87 dollars per ton based on daily production.

젖소의 적정사료 급여시스템 결정 1 . 착유우의 사료급여 최적화를 위한 L . P . 모델 개발

박경규,장윤환,김태욱 ( Kyung Kyoo Park,Yun Hwan Chang,Tae Wook Kim ) 한국축산학회 1986 한국축산학회지 Vol.28 No.12

In order to determine the optimum dairy feeding system, a L.P. model was developed. The program consisted of 8 variables; the daily feeding quantities of formula feed, green grass, forage, wild grass, hay silage, rice straw and substitutive feed. Also, it was formulated with 25 constraint functions. The major input data of L.P. are listed as follows. 1. Weight of dairy cow. 2. Amount of average milk production per day. 3. Daily maximum feeding quantity of each feed. 4. Production and purchasing cost of each feed. 5. Nutrient content of each feed.

배합사료 공장의 작동비용 모델

박경규,정도섭,찰스 디요 ( Kyung Kyoo Park,Do Sup Chung,Charles Deyoe ) 한국농업기계학회 1985 바이오시스템공학 Vol.10 No.1

配合飼料生産에 所要되는 運轉費用을 推定하기 爲하여 所要에너지, 所要努動力 維持 및 修理費를 分析하여 工場規模 및 飼料生産種類에 따른 數學的模型을 開發하였다. 에너지費用은 電氣費用과 燃料費用으로 區分하였으며 所要努動力은 生産努動力, 管理者努動力 그리고 維持 및 修理努動力으로 區分하였다. N/A

한국에 있어서 미곡(米穀)의 건조(乾燥) 및 저장(貯藏)을 위한 시스템의 모델 개발 및 적정규모 선정에 관한 연구(I) -모델 시스템의 Layout 및 설계-

박경규,Park, Kyung-Kyoo 한국농업기계학회 1986 바이오시스템공학 Vol.11 No.2

In order to improve the traditional post harvest system in Korea, a model for mechanized grain drying and storage facilities was developed. Also, a computer program for the model system was developed. For the study, flat type steel bin and circulation type dryer were selected for the model and Fortran language was used for the computer program. This program was tested by using various practical data. The following results were obtained from the study: 1. The general model developed can be used for designing a rough rice drying and storage facility within the range from 100 ton to 1000 ton capacity. 2. Major output of the computer program for designing a model system were as follow; a. The dimension of the plant. b. The storage bin size, dryer number and dryer size. c. The dimension of individual equipment and its required HP. d. Capital requirement and operating cost of the model system.

젖소의 적정사료 급여시스템 결정 1 . 젖소의 조사료 생산비용 산출모델

박경규,김태욱,이정호 ( Kyung Kyoo Park,Tae Wook Kim,Jung Ho Lee ) 한국축산학회 1986 한국축산학회지 Vol.28 No.12

In order to provide a basic information for optimum dairy feeding system in Korea, mathematical models for estimating the production cost of grass, wild grass, dried hay and silage were developed by analyzing the dairy feeding system. Also, a computer program for calculating these models was developed and tested by using various practical data. Results of these tests were analyzed each other and it was found that many factors affected roughage production cost. However, land price for paddock was the most significant factor of them.

평면식(平面式) 건조기(乾燥機)의 적정작업조건(適正作業條件) 설정(設定)에 관(關)한 연구(硏究)

박경규 ( Kyung Kyoo Park ),정창주 ( Chang Joo Chung ) 한국농공학회 1974 韓國農工學會誌 : 전원과 자원 Vol.16 No.4

Experimental work of batch-type dryer was conducted to develop its optimurm operating conditions by analyzing the major factors which affect the drying performance. A laboratory batch-type dryer was constructed and tested for various levels of heated-air rates, and depths of grain deposit. Tong-il rice variety having the initial moisture content of approximaely 23 per cent in wet basis was used for the experiment. The criteria selected for establishing the optimum operating condition were the drying performance rate, the thermal efficiency, and the operational cost of the dryer. The results of the study are summarized as follows: 1. The performance rate of dryer for a specific operating condition was defined as total amount of material dried per hour when the moisture content of grains in the upperlayer reaches to 16 per cent in wet basis. The optimum operating conditions as viewed in the rate of drying performance could be justified by functional realtionship between the depth of grain deposit and air flow rate. In other words, there was a definite depth of grain deposit for a given air-rate which make the dryer performance maximum. The optimum grain depth for the batch-type dryer with 3.3㎡ loading area and with the attached axial fan was about 35cm. 2. The thermal efficiency for the dryer was evaluated by the ratio of the latent heat required to evaporate the grain moisture to the heat input required to raise the ambient air-temperature to 40 degree centigrade. The optimum operating condition as viewed in term of thermal efficiency analyzed was that grater depth and lower air flow-rate may be desirable. This condition is contracted with the optimum condition as viewed by the dryer performance rate. 3. The annual operating cost of batch-type dryer was analyzed for different annual hour of use and for different operation condition. The optimum condition as viewed in terms of operating cost was almost identical to one as viewed in terms of dryer performance rate. Therefore, the most economical use of batch-type dryer for the same annual operating hours can be obtained when the dryer operated in the condition of maximum dryer performance rate. Increasing the annual operating hour may be desirable to cut down the dryer operation cost, since the annual hour of dryer use is much sensitive to the operating cost than any peractical conditions of dryer operation. 4. The most desirable operational condition as justified by combining all the criteria, dryer performance rate, thermal efficiency and annual operating cost, could be concluded to operate the dryer in the condition of maximum performance rate. The condition in general is identical to the lowest operation cost for a given annual operating hour.

한국에 있어서 미곡(米穀)의 건조 및 저장을 위한 시스템의 모델 개발 및 적정규모 선정에 관한 연구(1) -모델 시스템의 Layout 및 설계-

박경규 ( Kyung Kyoo Park ) 한국농업기계학회 1986 바이오시스템공학 Vol.11 No.2

암환자에서 혈중 CA 15-3치 측정의 의의

송준규(Jun Kyoo Song),박경규(Kyung Kyu Park),이민혁(Min Hyuk Lee),유희(Hee Yoo) 대한외과학회 1993 Annals of Surgical Treatment and Research Vol.45 No.6

답리작 사료작물의 랩사일리지 생산비 분석

하유신(Yu Shin Ha),박경규(Kyung Kyoo Park) 한국초지조사료학회 2012 한국초지조사료학회지 Vol.32 No.1

본 연구는 겨울철과 여름철에 답리작 사료작물의 랩사일리지 생산에서 연구보고된 조사료 재배품종과 재배방법을 기준으로 하였을 때, 소요 기계에 따른 기계화 생산 작업의 특성과 부담면적, 기계 이용비용을 분석하여 조사료 생산비용을 산출하였다. 생산비용은 작물종류(호밀, 청보리, IRG, 수단그라스), 파종방법 (산파, 조파)과 트랙터 마력 (50, 75, 100, 130 ps)에 따른 경작규모별 (부담면적 ha별), 부담면적대비 경작지비율별 (25, 50, 75, 100%), 작부체계별(품종 숙기별, 동·하계 작물별)로 분류하여 산출하였다. 트랙터 100 ps, 조파를 기준으로 단일 품종 재배보다 호밀, IRG와 청보리 등을 품종 숙기별로 재배할 때 파종은 20일에서 30일로, 수확은 약 30일에서 40일로 시기가 늘어나기 때문에 부담면적이 57.1 ha에서 77.5 ha로 증가하였다. 동·하계 작물 연중 재배시 생산비용은 100 ps 트랙터, 조파, kg-TDN 기준으로 호밀 + 수단은 250원, 청보리 + 수단은 215원, IRG + 수단은 234원, 호밀 + 청보리 + IRG+ 수단은 233원으로 나타났다. 이는 연중 재배하지 않는 경우에 비해 고정비가 줄어들기 때문에 생산비용은 약 30~50% 절감되었다. 따라서 답리작 사료작물의 랩사일리지 생산시 노동피크와 수확시기의 분산, 기계장비의 효율성을 제고할 수 있도록 품종 숙기별 연중 재배 작부체계의 이용이 바람직한 것으로 판단되었다. Mechanized operation model and mechanical cultivation technology for winter barley, rye, Italian ryegrass and sudan grass wrap silage production system at the paddy field for cropping system was developed. Also, a series of experiment were performed and lots of data were collected and analyzed to develope mechanical technology, coverage area, and optimum size of the farm (break-even point) for wrap silage production system. The coverage area for winter barley or rye wrap-silage production system is determined around 61.9, 73.4, 77.5, 88.2 ha in the case of drill seeding and different ripening species by tractor power 50, 75, 100, 130 ps, respectably. The break-even point of the farming size is analyzed as 20 ha and its production cost is estimated around 367, 383, 430, 443 won/TDN-㎏ in the case of winter barley wrap-silage by tractor power 50, 75, 100, 130 ps, respectably. The break-even point of the farming size is analyzed as coverage area and its production cost is estimated around 237, 215 won/TDN-㎏ in the case of winter barley wrap silage and sudan grass by the tractor power 50, 100 ps, respectably.

축산물 생산에 있어서 배합사료 품질의 중요성(Importance of Feed Quality for Livestock Production)

정도섭(Do Sup Chung),박경규(Kyung-kyoo Park) 대한수의학회 1990 대한수의학회 학술대회발표집 Vol.1990 No.-