The heating load of a building at winter design conditions is 1 510 000 Btu/hr (with pick-up allowance). From the performance specifications for commercial gas-fired hot water boilers provided in Table 6.2, select a boiler that can efficiently meet this load based on the
a. MBH output rating
b. I = B = R net rating

Table 6.2.

 

Transcribed Image Text:

MBH 360 420 500 600 750 794 900 1000 1191 1200 1500 1588 1800 1985 2100 2382 2400 2779 3176 3573 3970 4367 4764 5161 5558 5955 6352 6749 7146 Input kW 105 123 146 176 220 233 264 293 349 352 439 465 527 582 615 698 703 814 931 1047 1163 1280 1396 1512 1628 1745 1861 1977 2094 MBH 298 342 412 480 618 610 720 824 915 960 1200 1220 1440 1525 1680 1830 1920 2135 2440 2745 3050 3355 3660 3965 4270 4575 4880 5185 5490 Output kW 87 100 121 141 181 179 211 241 268 281 352 357 422 447 492 536 563 626 715 804 894 983 1072 1162 1251 1340 1430 1519 1609 I=B=R Net Rating MBH kW 258 297 358 417 537 530 626 717 796 835 1043 1061 1252 1326 1461 1591 1675 1857 2122 2387 2652 2917 3183 3448 3714 3978 4243 4509 4774 76 87 105 122 157 155 183 210 233 245 306 311 367 389 428 466 491 544 622 699 777 855 933 1010 1088 1166 1243 1321 1399