Budi I. Setiawan
Departemen Teknik Pertanian, Kampus IPB Darmaga Bogor

Published : 12 Documents
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Development and Management of Water in Wetland

Jurnal Keteknikan Pertanian Vol 15, No 1 (2001): Buletin Keteknikan Pertanian
Publisher : PERTETA

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Abstract

This paper describes potentials as well as obstacles in developing wetland for agricultures. Historical backgrounds of wetland utilization for agricultures Indonesia and wetland definition by Ramsar Convention are highlighted. Special emphasis is given to explain physical and hydrological conditions of wetland and opportirnities to develop sustainable agricultural activities based on wetland categories. Current problems in developing wetland, sucsh as land degradation and lost of wetland are enlightened, and a little note is aroused to elucidate the failure of One Million Hectares Project in Central Kalimantan. Finally, prospectivetechnologies for controlling water table were proposed.

Simulation of Temperature Control in Growth Room for Tropical Mushroom

Jurnal Keteknikan Pertanian Vol 15, No 1 (2001): Buletin Keteknikan Pertanian
Publisher : PERTETA

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Abstract

Optimum growth of tropical mushrooms depend on the ambient environment. In general, mushrooms prefer low air temperature and high air humidity. The growers use closed rooms to maintain favorable conditions. Recently, use of refrigerator is of interest to maintain the favourable conditions under hot and humid climate conditions. This study is attempting to apply control mechanism in maintaining theambient temperature favorable for mushroom growth. A simple heat transfer equation was used to describe changes of temperature inside the growth chamber. This equation was then coupled with a fuzzy logic control to actuate a refrigerator at a suitable length of time. Three temperature condition (16, 19 and 21 O C ) were set as set points. The results show the developed technique was capable to maintain the temperature inside the growth room even though under the influence of a highly fluctuating ambient temperature. This technique was alsoresponsive and reliable in facing immediate disturbances, and showed a realistic requirement of cooling energy.

Optimation of Tank Models Parameters

Jurnal Keteknikan Pertanian Vol 17, No 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

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Abstract

Tank to model is one of hydrological models to analize characteristics of river flow. The model can give information of water availability and be used to predict flood occurences. As it is setting the embodied parameters. In from of Standard Tank Model, the number of parameters accounts to 12. Many optimation method available for general application. This paper introduces an optimation technique to determine the parameters with taking into account confornity to water balance in addition to best-fifting. Here, two data from Cidanau and Terauchi Watershed were used for clarification, which show that this optimation technique gained fast and accurate result. This technique has been made available to use in form of an application sofware and openly possible to accomodate the other forms of Tank Model.

Fuzzy Control on Artificial Ripening of Uli Banana

Jurnal Keteknikan Pertanian Vol 13, No 1 (1999): Buletin Keteknikan Pertanian
Publisher : PERTETA

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Abstract

Banana is a potential commodity to gain foreign currency since its export has tended to increase yaer by year. Postharvest handling of banana is very important in order to maintain high quality of the products. Artificial ripening is one method applied to control the rate of ripening and in the other side to guarantee the uniformity of quality. Teperature in the ripening chamber plays an important role since it directly influences respiration rate of the products. This research is aimed to apply fuzzy control to regulate the temperature, which is set in order to get better quality of the product. Yhe objective of the fizzy control is to set the temperature into 4 (four) decreasing steps : 1) 24"C. 2)22.5"C 30 21.5 "C and 4) 24 "C each for 24 hours. Respiration rate during these periods are 0.0866 ml CO2/kg/h become 0.06054 ml CO2/kg/h or 3.1716 ml O2/kg/h/ become 0.7016 ml O2/kg/h.

Development and Management of Water in Wetland

Jurnal Keteknikan Pertanian Vol 15, No 1 (2001): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Original Source | Check in Google Scholar

Abstract

This paper describes potentials as well as obstacles in developing wetland for agricultures. Historical backgrounds of wetland utilization for agricultures Indonesia and wetland definition by Ramsar Convention are highlighted. Special emphasis is given to explain physical and hydrological conditions of wetland and opportirnities to develop sustainable agricultural activities based on wetland categories. Current problems in developing wetland, sucsh as land degradation and lost of wetland are enlightened, and a little note is aroused to elucidate the failure of One Million Hectares Project in Central Kalimantan. Finally, prospectivetechnologies for controlling water table were proposed.

ERROR ANALYSIS ON DETERMINATION OF SPECIFIC HEAT OF AGRICULTURAL PRODUCTS USING MIXTURE METHOD

Jurnal Keteknikan Pertanian Vol 20, No 1 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Original Source | Check in Google Scholar

Abstract

ABSTRACT This paper reporting method of error analysis in determination of specific heat of agricultural product using mixture method. There are six Variables evaluated on error measurement, those are: mass of water, mass of simple, equilibrium temparature, water temparature, sample temparature and calorimeter temperature. As the results of experiment on potatoes and carrot, calorimeter temperature gave biggest error contribution based on simulation conducted using Visual Basic Application (VBA) at Microsoft Word. Keyword: error analysis, Specific heat, VBA

Optimation of Tank Models Parameters

Jurnal Keteknikan Pertanian Vol 17, No 1 (2003): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Original Source | Check in Google Scholar

Abstract

Tank to model is one of hydrological models to analize characteristics of river flow. The model can give information of water availability and be used to predict flood occurences. As it is setting the embodied parameters. In from of Standard Tank Model, the number of parameters accounts to 12. Many optimation method available for general application. This paper introduces an optimation technique to determine the parameters with taking into account confornity to water balance in addition to best-fifting. Here, two data from Cidanau and Terauchi Watershed were used for clarification, which show that this optimation technique gained fast and accurate result. This technique has been made available to use in form of an application sofware and openly possible to accomodate the other forms of Tank Model.

Fuzzy Control on Artificial Ripening of Uli Banana

Jurnal Keteknikan Pertanian Vol 13, No 1 (1999): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Original Source | Check in Google Scholar

Abstract

Banana is a potential commodity to gain foreign currency since its export has tended to increase yaer by year. Postharvest handling of banana is very important in order to maintain high quality of the products. Artificial ripening is one method applied to control the rate of ripening and in the other side to guarantee the uniformity of quality. Teperature in the ripening chamber plays an important role since it directly influences respiration rate of the products. This research is aimed to apply fuzzy control to regulate the temperature, which is set in order to get better quality of the product. Yhe objective of the fizzy control is to set the temperature into 4 (four) decreasing steps : 1) 24"C. 2)22.5"C 30 21.5 "C and 4) 24 "C each for 24 hours. Respiration rate during these periods are 0.0866 ml CO2/kg/h become 0.06054 ml CO2/kg/h or 3.1716 ml O2/kg/h/ become 0.7016 ml O2/kg/h.

Simulation of Temperature Control in Growth Room for Tropical Mushroom

Jurnal Keteknikan Pertanian Vol 15, No 1 (2001): Buletin Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Original Source | Check in Google Scholar

Abstract

Optimum growth of tropical mushrooms depend on the ambient environment. In general, mushrooms prefer low air temperature and high air humidity. The growers use closed rooms to maintain favorable conditions. Recently, use of refrigerator is of interest to maintain the favourable conditions under hot and humid climate conditions. This study is attempting to apply control mechanism in maintaining theambient temperature favorable for mushroom growth. A simple heat transfer equation was used to describe changes of temperature inside the growth chamber. This equation was then coupled with a fuzzy logic control to actuate a refrigerator at a suitable length of time. Three temperature condition (16, 19 and 21 O C ) were set as set points. The results show the developed technique was capable to maintain the temperature inside the growth room even though under the influence of a highly fluctuating ambient temperature. This technique was alsoresponsive and reliable in facing immediate disturbances, and showed a realistic requirement of cooling energy.

ERROR ANALYSIS ON DETERMINATION OF SPECIFIC HEAT OF AGRICULTURAL PRODUCTS USING MIXTURE METHOD

Jurnal Keteknikan Pertanian Vol 20, No 1 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Original Source | Check in Google Scholar

Abstract

ABSTRACT This paper reporting method of error analysis in determination of specific heat of agricultural product using mixture method. There are six Variables evaluated on error measurement, those are: mass of water, mass of simple, equilibrium temparature, water temparature, sample temparature and calorimeter temperature. As the results of experiment on potatoes and carrot, calorimeter temperature gave biggest error contribution based on simulation conducted using Visual Basic Application (VBA) at Microsoft Word. Keyword: error analysis, Specific heat, VBA