A Numerical Analogy of Improving Efficiency for the PVT System in Bangladesh

<div>Outcome of (a) <span class="nowrap"><svg height="8.8423pt" id="M148" style="vertical-align:-0.2064009pt" version="1.1" viewbox="-0.0498162 -8.6359 9.02496 8.8423" width="9.02496pt" 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="M673 297H417L411 270C517 261 522 258 506 183L487 92C476 38 428 19 360 19C207 19 123 132 123 287C123 472 243 631 441 631C557 631 617 583 617 469L647 472C650 545 655 604 658 632C625 643 554 666 467 666C201 666 23 502 23 278C23 90 156 -16 339 -16C410 -16 501 6 569 24C566 43 567 70 573 101L589 183C604 259 607 262 667 271L673 297Z"></path></g></svg>,</span> (b) <span class="nowrap"><svg height="11.9224pt" id="M149" style="vertical-align:-3.286501pt" version="1.1" viewbox="-0.0498162 -8.6359 15.1914 11.9224" width="15.1914pt" 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="M697 650H468L461 623L492 619C539 613 547 605 518 546C481 471 367 264 278 116H276C239 278 197 500 186 567C180 604 185 613 226 619L252 623L260 650H24L17 623C78 617 92 613 108 533L216 -11H247C365 200 515 462 560 529C616 612 624 615 689 623L697 650Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.332,3.132)"><path d="M221 640C187 640 167 607 168 581C168 555 185 538 208 538C239 538 262 565 261 595C261 619 247 640 221 640ZM223 109C199 88 165 62 153 62C147 62 145 70 151 94L219 369C231 416 232 448 209 448C183 448 113 407 58 353L70 331C101 356 131 373 139 373C145 373 145 363 140 341L77 86C57 4 71 -12 91 -12C125 -12 202 47 236 87L223 109Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,9.698,3.132)"><path d="M480 109C451 80 424 63 415 63C408 63 407 72 413 99C429 168 446 238 462 306C492 434 464 449 439 449C420 449 399 442 373 426C331 402 257 344 189 251H187L208 338C226 415 222 449 200 449C172 449 114 412 59 354L73 330C98 354 128 375 137 375C143 375 146 367 139 335C114 224 85 105 57 -4L63 -11C82 -4 109 3 135 8C147 69 162 128 174 177C224 262 340 385 384 385C399 385 405 371 391 314C374 240 357 166 339 92C320 15 330 -12 354 -12C380 -12 436 20 495 85L480 109Z"></path></g></svg>,</span> (c) <span class="nowrap"><svg height="12.2532pt" id="M150" style="vertical-align:-3.29108pt" version="1.1" viewbox="-0.0498162 -8.96212 24.2146 12.2532" width="24.2146pt" 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="M620 675H597C578 656 570 650 541 650H144C112 650 104 653 94 675H72C59 618 42 552 23 493L53 491C71 534 88 564 105 585C124 608 144 615 238 615H290L197 121C182 40 174 34 88 28L82 0H361L367 28C275 34 266 38 281 121L374 615H441C522 615 543 608 553 583C562 560 566 531 565 493L597 494C603 551 612 629 620 675Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.176,3.132)"><path d="M490 97L476 124C442 96 405 70 398 70C392 70 390 78 396 114C419 243 448 379 463 432L457 436C446 436 431 439 418 442C393 447 368 451 343 451C281 451 204 418 155 381C74 320 24 206 24 107C24 23 59 -12 88 -12C118 -12 155 5 191 34C236 70 290 122 328 177H330L312 84C296 0 311 -12 331 -12C355 -12 425 24 490 97ZM374 387C371 367 360 299 347 264C323 202 187 53 142 53C128 53 113 73 113 120C113 224 157 332 221 380C241 395 274 403 303 403C330 403 360 395 374 387Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,11.855,3.132)"><path d="M781 91L765 118C733 86 702 70 693 70C686 70 685 77 692 106L738 297C772 439 736 451 712 451S675 445 647 431C605 410 526 356 452 257H450L459 294C491 426 459 451 429 451C403 451 386 445 361 431C312 404 239 343 170 253H168L188 333C208 411 205 451 175 451C148 451 85 417 24 346L39 318C57 338 100 374 112 374C120 374 122 372 115 339C91 226 62 112 28 -6L37 -12C59 -4 87 3 114 6C125 68 142 127 154 168C184 227 316 383 372 383C397 383 396 366 381 289C362 192 338 92 312 -6L317 -12C339 -5 367 3 396 6L434 170C468 234 598 383 650 383C668 383 676 369 664 319L609 90C593 23 600 -12 629 -12C654 -12 722 23 781 91Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,19.181,3.132)"><path d="M460 334C460 396 434 451 378 451C330 451 241 408 148 300H146L237 679C241 697 241 710 232 710C213 710 153 684 67 675L66 646H95C141 646 145 642 134 595L39 170C23 97 31 54 46 33C64 8 100 -12 137 -12C178 -12 234 3 298 43C391 101 460 222 460 334ZM371 320C371 204 316 89 248 51C230 41 208 37 192 37C143 37 102 72 119 166C124 194 129 215 135 235C202 323 298 392 335 392C353 392 371 372 371 320Z"></path></g></svg>,</span> and (d) partial shading on PVT output water temperature.</div>

International Journal of Photoenergy

fig15

Figure 15

Figure 15: A Numerical Analogy of Improving Efficiency for the PVT System in Bangladesh 