Validated TRNSYS model for solar assisted space heating system

The present study involved a validated TRNSYS model for solar assisted space heating system as applied to a residential building in Jordan using new detailed radiation models of the TRNSYS 17.1 and geometric building model Trnsys3d for the Google SketchUp™ 3D drawing program. The annual heating load for a building (Solar House) which is located at Royal Scientific Society (RSS) in Jordan is estimated under climatologically conditions of Amman. This Paper is to compare of measured thermal performance of the Solar House and with that was modeled using TRNSYS. The results showed that the annual measured space heating load for the building was 6,188 KWh while the heating load for the modeled building was 6,391 KWh. Moreover, the measured solar fraction for the solar system was 50% while the modeled solar fraction was 55%. A comparison of modeled and measured data resulted in percentage mean absolute errors for solar energy for space heating, auxiliary heating and solar fraction of 13%, 7% and 10%, respectively. The validated model will be useful for long-term performance simulation under different weather and operating conditions.