Analysis, design and optimization of offshore power system network

... Stoecker and Jones Introduction FIGURE 1. 19 Photographs of practical heat pumps (From KIST, Korea.) 37 38 Design and Optimization of Thermal Systems (19 82), Cooper (19 87), and Kreider and Rabl (19 94) ... pump (b) FIGURE 1. 11 Power systems based on (a) solar energy and (b) nuclear energy (Adapted from Howell and Buckius, 19 92.) 30 Design and Optimization of Thermal Systems most of which are not ... Ozisik (19 85) and Incropera and Dewitt (20 01) in heat transfer, Fox and McDonald (20 03) and Shames (19 92) in fluid mechanics, Howell and Buckius (19 92), Cengel and Boles (2002) and Moran and Shapiro...

... reason 56 Design and Optimization of Thermal Systems The formulation of the design problem is based on all of the above aspects Therefore, before proceeding to the design of the thermal system, ... on/off mechanism is often used with the designed thermal system to maintain the desired temperature levels 58 Design and Optimization of Thermal Systems 2.2 CONCEPTUAL DESIGN At the very core of ... Simulation of the system Evaluation of different designs Iteration and obtaining an acceptable design Optimization of the system design Automation and control Communicating the final design Figure 2 . 14 ...

... important in the design of FIGURE 2.33 Range of thermal conductivity k for a variety of materials under normal temperature and pressure 11 0 Design and Optimization of Thermal Systems thermal systems ... solder FIGURE P2 .6( b) 11 8 Design and Optimization of Thermal Systems (c) Extrusion of aluminum from a heated cylindrical block, of diameter 15 cm at a temperature of 60 0 K, to a rod of diameter cm ... (Touloukian and Ho, 19 72; American Society of Metals, 19 61 ; ASHRAE, 19 81; Eckert and Drake, 19 72; Incropera and Dewitt, 20 01) In addition, properties such as thermal diffusivity , where k/ C, and kinematic...

... heat 13 4 Design and Optimization of Thermal Systems treatment The flow of hot gases and thermal energy, on the other hand, is studied as a continuum, using a continuous model Both the discrete and ... given profile Such simplifications of the 14 4 Design and Optimization of Thermal Systems boundary conditions not only reduce the complexity of the model, but also make it easier to understand and ... casing, inner lining, and heating unit of the oven? Briefly justify your answers Modeling of Thermal Systems 3 .1 INTRODUCTION 3 .1. 1 IMPORTANCE OF MODELING IN DESIGN Modeling is one of the most crucial...

... Modeling of Thermal Systems 14 9 T1 T2 T2 Streamlines T2 Isotherms (a) (b) A1 A2 V1 V2 2 ρ1V1A1 = ρ2V2 A2 (c) (d) FIGURE 3 .13 Differential formulations (a) Flow in an enclosed region due to inflow and ... Further details on the analysis and design of such heat exchangers are discussed in Chapter 15 2 Design and Optimization of Thermal Systems Example 3.3 In the design of a hot water storage system, ... equations and boundary 17 0 Design and Optimization of Thermal Systems TABLE 3 .1 Commonly Used Dimensionless Groups in Fluid Mechanics and Heat and Mass Transfer Parameter Definition VL Ratio of Effects...

... 0 .9 LR LB 0.6 0.6 0.3 LB BR 0.3 0.0 10 –2 10 1 100 10 1 0.0 10 –2 10 2 10 1 100 Gr/Re2 (a) 10 1 10 2 Gr/Re2 (b) 0 .9 LR BR 0.6 0.3 0.0 10 –2 10 1 100 10 1 10 2 Gr/Re (c) FIGURE 3.22 Calculated maximum ... constants C1, C2, and C3 are obtained as 16 C1 6.243C2 0 .11 4C3 9. 555 6.243C1 8 .17 3C2 0.044C3 9. 490 0 .11 4C1 0.044C2 3.481C3 3.762 These equations are solved to yield the three constants as C1 C2 1. 50 39 ... [0.2 0.6 1. 0 1. 8 2.0 3.0 5.0 6.0 8.0]; t0 [14 6.0 12 9. 5 11 4.8 90 .3 85 .1 63.0 34.6 25.6 14 .1] ; t log(t0); % Cutve Fit t1 polyfit(tau,t ,1) ; a t1 (1) A exp(t1(2)) Here the input data are entered and the...

... in m3/s of water in an open channel with a slight downward slope S and a hydraulic radius R is measured to yield the following data: R (m) 0.5 1. 0 1. 5 2.0 S 1. 5 10 10 10 3 1. 91 3 .10 4 .11 5.03 ...  218 Design and Optimization of Thermal Systems Number of iterations 200 10 0 opt 1. 0 1. 5 2.0 Relaxation factor FIGURE 4.3 Typical variation of the number of iterations needed for convergence of ... transfer, and data analysis, are often governed by linear systems A system of n linear equations may be written in the general form a11x1 a12 x a1n x n b1 a21x1 a22 x a2 n x n b2 an1x1 an x ann...