An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/jcse/volume-2018/3750859/figures/3750859.fig.004a.svgz" name="3750859.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Optimal control curve (<span class="nowrap"><svg height="9.14241pt" id="M144" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -5.96091 10.0646 9.14241" width="10.0646pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M515 96L502 119C471 88 431 62 423 62C416 62 411 70 417 101C440 223 469 341 497 448H486L412 422L380 277C330 188 210 57 152 57C137 57 126 69 139 124L195 366C210 431 205 448 182 448C155 448 89 413 23 350L36 326C73 354 103 376 112 376C118 376 118 365 113 340L61 118C54 90 52 68 52 51C52 0 75 -12 98 -12S151 -3 181 17C242 58 305 119 362 193H364L345 104C323 3 339 -12 359 -12C390 -12 464 35 515 96Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.929,3.132)"><path d="M138 535C169 535 191 560 191 589C191 620 168 644 139 644S85 620 85 589C85 560 110 535 138 535ZM257 0V30C192 35 185 43 185 109V453C142 435 94 422 40 414V386C101 378 104 372 104 311V109C104 41 97 35 33 30V0H257Z"></path></g></svg>)</span></td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/jcse/volume-2018/3750859/figures/3750859.fig.004b.svgz" name="3750859.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Optimal control curve (u)</td></tr></table>

Journal of Control Science and Engineering

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Figure 4

Figure 4: An Optimal Hybrid Control Method for Energy-Saving of Chilled Water System in Central Air Conditioning 