אסיף מאגר המחקר החקלאי

Design procedure for a greenhouse space heating system utilizing geothermal warm water

Year:

1987

Source of publication :

Authors :

Volume :

6

Co-Authors:

Tal, A., Institute of Agricultural Engineering, Agricultural Research Organisation, POB 6, Bet Dagan, Israel
Segal, I., Institute of Agricultural Engineering, Agricultural Research Organisation, POB 6, Bet Dagan, Israel
Regev, R., Institute of Agricultural Engineering, Agricultural Research Organisation, POB 6, Bet Dagan, Israel
Steinfeld, A., Institute of Agricultural Engineering, Agricultural Research Organisation, POB 6, Bet Dagan, Israel
Cohen, S., Moshav Paran, Israel
Zer, I., Moshav Paran, Israel

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Abstract:

Utilization of warm geothermal water (40°-60°C) supplied from deep wells for heating of winter crops is being pursued in the Arava region of Israel. Systems for soil warming have been developed and tested. This paper describes the design procedure of a space heating system utilizing warm water. Polyethylene irrigation piping on the crop bed is used for heat exchange. The design, based on conventional heat transfer formulae and computer simulation, resulted in a series of curves that facilitate future practical designs. An example, utilized in commercial plots, demonstrates the calculation procedure with respect to the special problems of medium salinity geothermal water used for irrigation. © 1987.

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