SECOND LAW CONSIDERATIONS QUESTION Can one devise a heat exchanger network that will transfer 6.574 gJ/h from the hot streams to the cold streams? If not, what is the best one can expect to do? ANSWER: In general, not all the heat available to be transferred can be. How much can depends upon two ∫ actors: The problem structure, ie, the flow rates and temperature levels of the process streams of interest, and The Minimum Approach temperature one elects to use. The first is set by the process; the second by the designer 2/21/99 HENS 1: Targeting2/21/99 HENS 1: Targeting 11 SECOND LAW CONSIDERATIONS QUESTION: Can one devise a heat exchanger network that will transfer 6.574 gJ/h from the hot streams to the cold streams? If not, what is the best one can expect to do? ANSWER: In general, not all the heat available to be transferred can be. How much can depends upon two factors: The problem structure, i.e., the flow rates and temperature levels of the process streams of interest, and The Minimum Approach Temperature one elects to use. The first is set by the process; the second by the designer