Modelling of a thermosyphon solar water heating system and simple model validation

摘要

A thermosyphon solar water heater consisting of two flat plate collectors of total aperture area of 2.7 m~2 and 150 1 storage tank is modelled using TRNSYS. Simple experiments were conducted in order to validate the model. During the experature weather conditions were measured every 10 min and integrated over an hour. The temperature of the water in the storage tank was also measured at the beginning and at the end of the day. The storage tank temperature rise was used to validate the model by using the actual weather data as input to the program. Validation tests were performed for 25 days spread over 6 months and the mean deviation between the predicted and the actual values of water temperature rise is 4.7/100 whcih is very satisfactory.