THE DESIGN AND TEST OF IN-VESSEL COMPOSTING UNIT FOR HEATING A PLASTIC HOUSE

Author's Name: I. I. Sadek, Fatma S. Moursy and E. A. Salem
Subject Area: Life Sciences
Subject Agricultural
Section Research Paper

Keyword:

In vessel composting- compost heated plastic houses- temperature profile- produced heat energy- growth patterns- crop yield.


Abstract

Efficiency of locally designed and constructed in-vessel composting unit for heating plastic house was investigated during winter seasons of 2014/2015 and 2015/2016 at the Central Laboratory for Agricultural Climate (CLAC), Dokki, Giza. Composting unit constructed of fear face wood for the outer body,irontubes for the heat exchanger (four stages square coil) with a passive-aeration system.Plastic low tunnel was used as sink for the harvested heat.For Both seasons, the highest compost temperature,70.1 and 73.2°C, were recorded after three days and maintainedat55°C during the second and the third week.The lowest temperature values were recorded during the fourth week. A total of 4363.313 and 4339.657 kJ kg-1 were harvested during first and second season; respectively. Harvested energy used to adjust heated tunnel temperature between 20 and 26°C, which is reflected on better tomato growth and yield compared to non heated tunnel. Pile inside the in-vessel unit present 26% of plastic househeating requirement.

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