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5
LOW TEMPERATURE HEAT EMITTERS AND DISTRIBUTION SYSTEMS
ANSWERS TO TEXTBOOK QUESTIONS AND EXERCISES
1. Heat emitters that operate at low water temperatures are essential in systems using
3. A series distribution system experiences a fluid temperature drop across each heat
4. The water temperature in any hydronic distribution system only climbs as high as
8. A parallel “homerun” distribution system is simple, versatile, and highly energy-efficient.
9. A double water plate panel radiator would allow a greater heat transfer rate and would
10. increases
16. A 3-way mixing valve allows cooler water to mix with the water from solar collectors,
17. A fan coil is a smaller heat emitter mounted to a wall surface or recessed wall cavity, and
18. condensate drip pan and drain
23. Each air handler or fan can operate in either heating or cooling mode.
26. 95°F
27. Positioning the tubing about midway through the slab is important to minimize the supply
29. A bond breaker layer reduces shrinkage cracking of the concrete. No bond breaker layer
31. The aluminum layer will minimize the amount of expansion and contraction in the tubing
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32. A low thermal mass heat emitter can adjust more quickly to changing heating load
requirements, preventing overheating in a sunny room in the afternoon.
