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Modification of a Hot Water Treatment Plant for Fruits (2016 – 2017)

M N Amin
Farm Machinery & Postharvest Process Engineering Division, BARI, Joydebpur, Gazipur Bangladesh

M A Hossain
Farm Machinery & Postharvest Process Engineering Division, BARI, Joydebpur, Gazipur Bangladesh

M A Gulandas
Farm Machinery & Postharvest Process Engineering Division, BARI, Joydebpur, Gazipur Bangladesh

M J Hossain
Farm Machinery & Postharvest Process Engineering Division, BARI, Joydebpur, Gazipur Bangladesh

Abstract/ Executive Summary:

In rural areas, 12-15 kW single-phase electric lines were not available though any place available but also load shading is occurred. Traders/farmers want to connect said power electric line for any plant; the authority of REB does not agree to install another new transformer. If the authority agrees to install the line, traders and farmers need a lot of money that is not an effort for all farmers and traders. For this reason, a simple and less electricity requirement hot water treatment plant was designed and fabricated with stainless steel (SS) materials in the Farm Machinery & Postharvest Process Engineering Division of Bangladesh Agricultural Research Institute, Joydebpur, Gazipur in 2016. When fruits are treated by the machine, water temperature decreased from 55°C to 53°C within 10 minutes. This temperature is not recommended for treating fruits. Therefore, the treating operation is stopped up to 10-15 minutes but heaters are running. Later water temperature is raised up to 55°C within 15 minutes. To minimize the breakdown of the operation of the machine, the heating power is increased from 12 kW to 18 kW for continuous operation of the machine. An electric motor of 0.38 kW used for rotation of the conveyor roller and stirrer, and six electric immersion heaters of 3 kW each used. It is expected that the improved plant would be a better performance to treat mango continuously without stopping the machine. The price of the plant is Tk.1,70,000 (US$2200).

Keywords: Washing machine, Performance, Economic, Hot water treatment plant

Location: Farm Machinery & Postharvest Process Engineering Division at Bangladesh Agricultural Research institute, Joydebpur, Gazipur

Start Date: 00-00-2016

End Date: 00-00-2017

Program Area: Farm Mechanization

Commodity: Performance evaluation

Objectives:

a) Modification and fabrication of washing machine for fruits b) Evaluating the performance of the HWTP c) To make an economic analysis of the HWTP

Methodology:

THE existing BARI hot water treatment plant for fruits was modified and fabricated in the workshop of Farm Machinery & Postharvest Process Engineering (FMPE) Division at Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur in 2016-17. When fruits are treated by the machine, water temperature decreased from 55°C to 53°C within 10 minutes. This temperature is not recommended for treating fruits. Therefore, the treating operation is stopped up to 10-15 minutes but heaters are running. Later water temperature is raised up to 55°C within 15 minutes. To minimize the breakdown of the operation of the machine, the heating power is increased from 12 kW to 18 kW for continuous operation of the machine. The plant was fabricated with locally available materials such as SS sheet, SS angle bar, SS pipe etc (Fig. 1). Power was transmitted to the conveyor roller with the use of the gearbox, chain sprocket, belt and pulley, self-centered and bearing, etc. The main functional parts of the plant were: 1) rectangular tank; 2) roller type conveyor assembly; 3) water heating system; 4) power transmission assembly; and 5) stirring assemble

Source of Information: Annual Research Report 2016 – 2017, Farm Machinery & Postharvest Process Engineering Division, BARI, Joydebpur, Gazipur Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The hot water treatment plant was improved. The overall dimension of the plant is 152×74×50 cm. An electric motor of 0.38 kW used for rotation of the conveyor roller and stirrer, and six electric immersion heaters of 3 kW each used. It is expected that the improved plant would be a better performance to treat mango continuously without stopping the machine. Field performance will be conducted in the next month.

Knowledge Management: Report/Proceedings