Energy in Agriculture
Krant, J., Institute of Agricultural Engineering, Agricultural Research Organization, P.O.B. 6, Bet Dagan, 50250, Israel
Segal, I., Institute of Agricultural Engineering, Agricultural Research Organization, P.O.B. 6, Bet Dagan, 50250, Israel
Dayan, A., School of Engineering, Tel Aviv University, Ramat Aviv, 69978, Israel
Two alternatives for using low-grade heat are pond warming in aquaculture and soil warming in horticulture. While both utilize pipe-type heat exchangers, the heat transfer characteristics differ. A simple model is presented, applicable for either substrate, whose complexity is commensurate with the available weather data in most localities. A first-order differential equation for solving surface temperature is obtained by parameterizing the energy balance terms, for a given layout and climatic conditions. Once solved, the energy demand, and the heat and evaporative fluxes can be estimated. An example is given where one case is verified by experiment, and other cases are simulated. © 1985.
A simple model for comparing energy exchange in warmed soils and fish ponds
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Krant, J., Institute of Agricultural Engineering, Agricultural Research Organization, P.O.B. 6, Bet Dagan, 50250, Israel
Segal, I., Institute of Agricultural Engineering, Agricultural Research Organization, P.O.B. 6, Bet Dagan, 50250, Israel
Dayan, A., School of Engineering, Tel Aviv University, Ramat Aviv, 69978, Israel
A simple model for comparing energy exchange in warmed soils and fish ponds
Two alternatives for using low-grade heat are pond warming in aquaculture and soil warming in horticulture. While both utilize pipe-type heat exchangers, the heat transfer characteristics differ. A simple model is presented, applicable for either substrate, whose complexity is commensurate with the available weather data in most localities. A first-order differential equation for solving surface temperature is obtained by parameterizing the energy balance terms, for a given layout and climatic conditions. Once solved, the energy demand, and the heat and evaporative fluxes can be estimated. An example is given where one case is verified by experiment, and other cases are simulated. © 1985.
Scientific Publication
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