Measurement of the thermal conductivity of mangoes (Mangifera indica L.) using a modified fitch apparatus

Date

6-1992

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nelio C. Altoveros

Co-adviser

Edwino G. Eusebio

Abstract

A modified Fitch apparatus was designed and constructed for the measurement of the thermal conductivity of Carabao mangoes. Two LM35D precision centigrade temperature sensors, which exhibits a linear output of 10 mV/ C, were used to measure the temperature of the heat source and the heat sink. Fluke 87 true RMS digital multimeters were used for the output of the temperature sensors. For the heater, about 5 inches of nichrome wire coil was used. The mango samples were subjected to different temperatures ranging from 46 C to 52 C. Different mango sample thickness of 0.375", 0.500", and 0.625" were also tested using the the said temperature range. Thermal conductivity of some selected fruits and vegetables were also measured using a constant temperature () set at 50 °C and sample thickness at 0.500". The measured thermal conductivity were compared with other measured or computed values obtained by other investigators. The results coincided with the values by other investigators using similar methods. The 0.375" thick mango samples was shown to be inappropriate for use on the designed fitch apparatus resulting in a very low measured conductivity.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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