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Kararl durumda hava bir kompresre 100 kPa basn 27C scaklk ve 30 m/dk debisinde girmekte 230 kPa basn ve 127C scaklnda kmaktadr (ekil). Hava
Kararl durumda hava bir kompresre 100 kPa basn 27C scaklk ve 30 m/dk debisinde girmekte 230 kPa basn ve 127C scaklnda kmaktadr (ekil). Hava daha sonra bir is deitiricisine girmekte sabit basnta 77C scaklnda kmaktadr. s deitiricisinin dier tarafnda su dolamaktadr. Is deitiricisine suyun giri scakl 20C k scakl 40C'dir. evreyle herhangi bir is transferi yoktur. Kinetik ve potansiyel enerji deiimleri ihmal edilmektedir. a) Kompresrn gcn (kW) ve soutma suyunun ktlesel debisini (kg/s), b) Kompresr ve is deitiricisi iin entropi retimini (KWIK) bulunuz. At steady state conditions, air enters a compressor at 100 kPa pressure, 27 C temperature, and 30 m/min flow rate, and exits at 230 kPa pressure and 127C temperature (Figure). Then, the air enters a heat exchanger and leaves it at 77 C temperature, at a constant pressure. Water circulates on the other stream of the heat exchanger. The water inlet temperature of the heat exchanger is 20 C and the outlet temperature is 40 C. There is no heat transfer with the environment. Kinetic and potential energy changes are negligible. a. Find the compressor power (kW) and the mass flow rate of the cooling water (kg/h). b. Find the entropy generation (kW/IK) for the compressor and heat exchanger. Dosyavi sectikten sonra Kavdet duamesine basarak. cevabinz kaydedildi uyansn grene kadar bekleyiniz 40C 100 P +27C Dheistirie -230 P
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