Int. J. of Energy Technology and Policy   »   2013 Vol.9, No.2

 

 

Title: Energy use efficiency of on-farm- and post-pineapples production in Nigeria

 

Authors: S.O. Jekayinfa; S.O. Afolayan; A. Taiwo; J.O. Popoola

 

Addresses:
Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
National Horticultural Research Institute (NIHORT), PMB 5432, Idi-Ishin, Ibadan, Nigeria
Department of Agricultural Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Oyo State, Nigeria
National Horticultural Research Institute (NIHORT), PMB 5432, Idi-Ishin, Ibadan, Nigeria

 

Abstract: The energy use and energy use efficiency in a group of pineapples plantations of a research institute in Nigeria was estimated. Total energy expenditure was 6,117.81 MJha−1 and energy output was 21,760 MJ/ha. The output/input energy ratio was 3.56. The different categories of energy input estimated are: direct energy (51.21%), indirect energy (48.79%), renewable energy (14.08%) and non-renewable energy (85.92%). Mean pineapples yield was about 8,000 kg ha−1. The net energy and energy productivity value was 15,642.69 MJha−1 and 1.13 kg MJ−1, respectively. The total cost of production of pineapples and benefit-cost ratio was $4,050/ha and 1.70 respectively. Estimation of energy from pineapples peelings showed that 1 kg of pineapples peelings can replace between 17.71 and 17.92 MJ for heat generation by combustion of biogas and between 11.72 and 17.53 MJ for replacing electricity generation from the national grid, diesel generating set or gasoline generating set.

 

Keywords: energy efficiency; energy contribution; pineapples; pineapple residue; Nigeria; pineapple peelings; heat generation; biogas; electricity generation.

 

DOI: 10.1504/IJETP.2013.058148

 

Int. J. of Energy Technology and Policy, 2013 Vol.9, No.2, pp.175 - 190

 

Submission date: 14 Aug 2013
Date of acceptance: 15 Sep 2013
Available online: 08 Dec 2013

 

 

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