Thermal Homework Assignment

HW-1 (Due Wed., Oct. 18 in class)

HW-2 (Due Wed., Oct. 25 in class)

select answers for HW-2:

2. (c) V=1.869(m³)

5. energy removed: -1280.7(kJ)

6. energy removed: -1255(kJ)

HW-3 (Due Wed., Nov. 1 in class)

2. (c) x=0.1; (d) P=1.64 MPa

3. (b) 1260 (kJ)

5. W=105(kJ)

HW-4 (Due Wed., Nov. 8 in class)

2. DU=1505(kJ)

3. T₂=49C

5. (c) Q=-291(kJ)

HW-5 (Due Wed., Nov. 15 in class)

2. Q=1926(kJ)

3. W_net=4.02(kJ)

4. (a) 60%; (b) 80%

5. W_net=8.28(kJ)

HW-6 (Due Monday, Nov. 27 before 5 pm)

1. (c) W₂₃=-318.2(kJ), W₃₄=93.7(kJ)

(d) Q₁₂=-44.4(kJ), W₄₁=-318.2(kJ)

2. (c)W₁₂=-56.08(kJ), W₃₁=170.92(kJ)

(d) Q₂₃=2015.2(kJ), Q₂₃=2015.2(kJ)

3. (d) Q₃₄=-2201.9(kJ)

HW-7 (Due Wednesday, Dec. 6 in class)

1. (a) T₁=150K; (b) T₂=250K; (c) Q_H=466.7(kJ); (d) Q_L=200(kJ)

2. (b) S4=1.925(kJ/K); (d) P=70kPa; (e) W=400(kJ)

3. (a) T₃=414(K); (b) W₁₂=86.1(kJ); (c) Q₂₃=-277(kJ); (d)W₃₁=-61.7(kJ)