11. The superpressure balloon cannot change size greatly, and so maintains a generally constant volume . 12. This in turn allows it to build up more pressure during a constant volume process. 13. The constant volume case is important in geochemistry and atmospheric chemistry where pressure variations are significant. 14. The muscles surrounding the larynx may expel air rapidly or maintain a constant volume while diving. 15. A corresponding expression for the difference in intensive properties ) at constant volume and constant pressure is: 16. The heat capacity at constant volume is the heat required for unit increment in temperature at constant volume. 17. The heat capacity at constant volume is the heat required for unit increment in temperature at constant volume . 18. Where " c " is the heat capacity ( at constant volume ) of the gas. 19. In contrast, the idealized Otto cycle of a gasoline engine approximates a constant volume process during that phase. 20. They also allow excess material to be continuously extracted to maintain a reasonably constant volume within the digestion tanks.
