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By W. Nernst

Publication by means of Nernst, W.

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66EAir flows through a constant pressure heating device as shown in Fig. 15. It is heated up in a reversible process with a work input of 85 Btu/lbm air flowing. The device exchanges heat with the ambient at 540 R. 2. Assuming constant specific heat develop an expression for the exit temperature and solve for it. V. 7 lbf/in2, 90 F, and exits at 25 lbf/in2, as shown in Fig. 16. The air is cooled by 90 F in an intercooler before entering the engine. The isentropic efficiency of the compressor is 75%.

A. For a reversible process, find the final temperature and the work done in the process. b. If they are connected thermally by circulating water between the rock bed and the house, find the final temperature and the irreversibility of the process assuming that surroundings are at 60 F. a) For a reversible process a heat engine is installed between the rockbed and the house. V. 67) ⇒ 1W2 = 19078 Btu b) No work, no Q irreversible process. 87EAir in a piston/cylinder arrangement, shown in Fig. 2, 540 R with a volume of 20 ft3.

If they are connected thermally by circulating water between the rock bed and the house, find the final temperature and the irreversibility of the process assuming that surroundings are at 60 F. a) For a reversible process a heat engine is installed between the rockbed and the house. V. 67) ⇒ 1W2 = 19078 Btu b) No work, no Q irreversible process. 87EAir in a piston/cylinder arrangement, shown in Fig. 2, 540 R with a volume of 20 ft3. 2 is required. The air is then heated from the initial state to 2700 R by a 3400 R reservoir.

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