Environmental Systems for Buildings 1
Environmental Systems for Buildings 1 AREN 3050
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This 4 page Study Guide was uploaded by Dixie McClure II on Thursday October 29, 2015. The Study Guide belongs to AREN 3050 at University of Colorado at Boulder taught by Staff in Fall. Since its upload, it has received 60 views. For similar materials see /class/231863/aren-3050-university-of-colorado-at-boulder in Architectural Engineering at University of Colorado at Boulder.
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Date Created: 10/29/15
AREN 3050 ENVIRONMENTAL SYSTEMS FOR BUILDINGS FALL 2005 r Total of 100 points Name gawk Spf b m Open book and notes 1 Solar Posmon and Shading 3 Hon long is the sun up on Lh shortesL day of hi year in Boulder 40 N latitude mum 0 from L1 door is a solid wooden feuca 8 ft high Is the cm in the sun WW 5710 r o ZLED z7 Zo EXAM 2 REV EW PAGE1 15 NOVEMBER 2005 AREN 3050 ENVIRONMENTAL SYSTEMS FOR BUILDINGS FALL 2005 o Cooling Load Calculations Consider a small singleefamil detached residence in Detroit The west wall ofthe house has a large patio door constructed of doublepane glass and measuring ll ft wide by 7 ft high It is Cmered by a wide eave 8 ft above the oor that extends 3 ft from the wall The ceiling is 8 ft high has an area of 1600 ft2 and the roofceiling has an overall Uvalue of 005 Btuhr 121 The building is built with medium construction tightness The indoor temperature is quot F a What is the cooling load contribution of the ceilingroof 4 at 4a Blah Hp gt brave 777 M1 5zp quotM 2779 CLTD 36 7 7295 417 i VA em 005 Wow37 Biw aim4 b What is the cooling load contribution of the patio door cl CAme AWth 51130 A5444 2 416 gt 7 404 WMr 5445qu w BAAAm 4 SM Lltr r 4137 g ELF Law i 0 g i 1 Ce wabaj 3 V quot4T LsLmS 5 14 f V L ISZb I L ASLAA J l4ilgt HpYQ39 L A Ate 5119114 99301 WLLI i 40417zw1b23 4147 std4V c What is the cooling load Contribution due to infiltration i39 9 a A AC S 78 5 A 06 7 7 r gle 434 I 50 3 EXAM 2 REVlEW PAGE 2 15 NOVEMBER 2005 AREN 3050 ENVIRONMENTAL SYSTEMS FOR BUILDINGS FALL 2005 3 Duct Calculations Consider the following duct system schematic The system has a total airflow of 1000 cfm and an ax ailable supply duct static pressure of 010 inWG Each branch rcce39ues 200 cfm I 4 3410 0 D g B39ID zcog 40 1 3390 39 so Llama EliFifty wvmmalzol wq 3 r 739 l 5743 F rHij LW39SO a What is h effcctlxe length of branch 4 as measured fiom the AHL39 r quot 19 Am 3 0 Lm 35 t L 4W4 kwpl 5 BWR 3 2 N l0 4qu 4qu PW i39dl 5 EMA l th C 014th L149 0 W slig K x b What is an appropriate diameter 01 the branch 4 duct APVAF 577w xlor ma 0074z quotWVm 5Q 55 718 a 500441 mt 0074quot 49039 gtDg hj N c Assuming branch 4 has the longest effectixel appropriate equix alen diametsr 0 trunk A A I ngth of all branches what is an W Ava 00 0 0 0074W ax La mx CFMW QO39UUCVn 9 3723 gt Dzlz n EXAM 2 REVlEW PAGE 3 l5 NOVEMBER 2005 U 0011319quotA J0 L lSSO39I NOLLQIHA 000i AIR QUANTITY cfm at 0075 Figure 728 Friction Chart for Round Duct p 00751bmft3 and s 00003 fl Residential Air Distribution System Design
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