First read this. Summarily, a user can add an object to the IDF to get all possible outputs for that IDF. So, adding something like Output:VariableDictionary, IDF, Unsorted; will result a text file (with the file extension RDD) that contains a complete list of all Output:Variable objects for that specific model. Then find the output variables of interest in the RDD file. In this case one might be Output:Variable,*,Surface Inside Face Convection Heat Gain Energy,hourly; !- Zone Sum [J]. Next, add all output variable objects of interest to the IDF and rerun the model.

Finally, read this for ways to get that output into a more user-friendly format (such as CSV).