Man's physical universe



quite comfortable in a room at a temperature of 40° F. when the

radiating panels are hot. This method of controlling the temperature

should cost much less than systems which depend on heating or cooling

the air.

Fig. 97. A floor-warming pipe installation before laying the floor,

(Courtesy of the Copper and Brass Research Association.)

Radiant heating and cooling would save money in

part because a

house would not need to be heated or cooled when one was not in it.

Cheap electricity would make it possible to provide comfort within a

minute or two after turning a switch.


1. What does complete air conditioning involve?

2. What is new about the recently advertised "air conditioned refrigerators"?

3. Would an "air conditioned" hat have any special sales appeal to you?

4. What is the most common cause of discomfort in crowded rooms?

5. Do you think that one should consider air conditioning in designing a new

home today?

6. In what respects would air conditioning change the construction of a new


7. Where was air conditioning first introduced, and why?

8. What are the possible social consequences of air conditioning?

9. What is the best way to cool air?

10. What are the advantages of air conditioning?

11. What is meant by a reverse refrigeration cycle?

12. Discuss the advantages of radiant heating and cooling.

13. How may humidity be controlled?

14. Discuss the necessity of insulation in air conditioning.

15. How could radiant heat be kept out of a building?

16. Why should provisions be made for ventilating the space under roofs?

17. How could the direct rays of the sun be kept off window areas during the hot

part of the day?

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