The paper is attached. Paper: link - http://ieeexplore.ieee.org/document/7170974/ I was trying to understand Exergy MPC formulation but I failed to understand sme trems in it (9th equation): regadring term T with 'r' and 'k' subscripts. Is anyone can explain little bit it would be great.

P.S. I was trying to formulate this MPC for Energy plus formulation C:\fakepath\Screenshot.jpg

The paper is attached. Paper: link - http://ieeexplore.ieee.org/document/7170974/ I was trying to understand Exergy MPC formulation but I failed to understand sme trems in it (9th equation): equation on a 3rd page): regadring term T with 'r' and 'k' subscripts. Is anyone can explain little bit it would be great.

P.S. I was trying to formulate this MPC for Energy plus formulation C:\fakepath\Screenshot.jpgformulation