31. Integration of Building systems
1. A designer is planning on using a hydronic distribution system to heat a building and needs to decide which type of system will be best for efficiency and comfort control. To this end, the designer plans on supplying equal flow and fluid temperature to each radiator to yield and efficient return. which type of piping systems would most likely achieve the best result?
a) one-pipe system
b) two-pipe direct return system
c) two-pipe reverse return system
d) series perimeter loop system
The answer is (d). I don't understand the series perimeter loop system is one-pipe system and I don't think it provides equal temperature to each radiator. And what does "the efficient return" mean here?
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