Heat Collection Characteristics of a Greenhouse for Drying (Part 2)

Heat Collection Capacities and Its Measurement Methods of a Greenhouse

Abstract

A simple greenhouse for grain drying was constructed to use for forced-air drying. The solar heat collected and the collection efficiency at a quasi-steady state were measured with varing the airflow rate. In a greenhouse for radiation drying, the drying method was not directed by the airflow rate. Therefore, it was showed that the solar heat collected could be easily estimated from the air temperature at non-steady states. A vinyl sheet was put on the heat collection surface to investigate its effectiveness on the heat collection. An influence of the net radiation on the collected at the each heat collection surface was indicated.