This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 650:351 Thermodynamics Doyle Knight Department of Mechanical and Aerospace Engineering Rutgers - The State University of New Jersey New Brunswick, NJ USA Tel: 732 445 4464 Email: firstname.lastname@example.org Office hours: Tuesday and Friday, 9:00 am to 11:30 am and by appointment Quiz No. 5 An air compressor takes air at 100 kPa and 17 C and delivers it at 1 MPa and 600 K to a constant pressure cooler. The air exits the cooler at 300 K. Find the specific compressor work ( i.e. , work per unit mass) and the specific heat transfer in the cooler. Solution The First Law of Thermodynamics is dE cv dt = Q cv W cv + summationdisplay m i parenleftBig h i + 1 2 V 2 i + gZ i parenrightBig summationdisplay m e parenleftBig h e + 1 2 V 2 e + gZ e parenrightBig We first select a control surface surrounding the compressor. The flow is steady, and there is a single inflow and single outflow. The kinetic energy and potential energy per unit mass do not change significantly (see Lecture Notes) since it is a compressor....
View Full Document
- Spring '08