#1 project name Flint Michigan location 9000x2floors floor area sqf calculated by date Design Conditions: Project Conditions: winter Outdoor Air; calculate 1 &2 below but use only the largest CFM value: 1 Infiltration based on air change rate winter 2 Ventilation based on CFM per person x = 70 Fdb outdoor 10 Fdb indoor TD CFM summer Glass Lighting People 95 Fdb outdoor 75 Fdb indoor TD 76 Fwb outdoor 50 % RSH indoor 40 GD 4:00 PM time of peak gain Item Glass total N E S W HOR Lighting People U value Ceiling-Roof Walls Floor Equipment Other Quantities Outdoor Air winter summer SC (Shading Coefficient) total watts operating at peak heat gain time total occupants at peak heat gain time U value color weight (lbs/sqf) U value color weight (lbs/sqf) Factor U value Slab Edge U value Door watts or hp, Appliances none Winter heat Loss = BUTH CFM CFM sqf sqf 0 sqf sqf 0 sqf 0 sqf ( ( 1.08 ) ( 0 U) ( TD ) = TD ) = Summer Heat Gain = BTUH 0 0 0 watts 0# Appliances sqf sqf 0 sqf sqf 0 sqf 0 sqf linf sqf watts hp 0 Other 0 Ceiling-Roof Walls Floor bsmt slab crawl space above grade Slab Edge Doors Equipment ( ( ( ( ( ( ( ( U) ( U) ( 0 factor) factor) 0 U) ( 0 U) ( U) ( U) ( TD ) = TD ) = = = 0 TD ) = 0 TD ) = TD ) = TD ) = ( ( ( ( ( ( ( ( 1.08 0.68 ( ( ( ( ( 3.4 ) sens ) latent ) U ) ( ETD ) U ) ( ETD ) N '/ '= . X = E S '/ '= . X = W Total weighted average U ) ( TD ) 3.4 ) 2500 ) 0 sensible) 0 latent ) 0 0 0 0 0 ( ( ( ( ( 0 Subtotals If ducts are outside the conditioned space add 10% TOTAL BTUH summer 0 heat loss U SF 0 SF SF 0 SF 0 SF ) ) ) ) ) ) ) ) ( ( ( ( ( ( ( ( TD GD TD SC 0 SC SC 0 SC 0 SC ) ) ) ) ) ) ) ) = = = = = = = = 0 0 0 0 0 0 0 0 = = = = = 0 0 0 0 0 ? = = = = = 0 0 0 0 0 0 0 0 BTUH Check; heat loss = 20-60 BTUH per sqf. (south to north); heat gain = 15-60 BTUH per sqf. heat gain 0 Allow 4% of area served for fan rooms, add 2% of gross building area for central plant equipment. C:\\Jackie\\Baker\\421\\Homework\\[Heat loss & Heat gain - Homework 1.xlsx]Sheet1 Homework #1 Office Building Flint Michigan location 9000x2floors size Description: Building size 150' x 60', walls are 11' high Insulated built in 1950 160 people from 9:00 until 5:00 Office Space Glass is double pane with no blinds Flat Roof - 4" of insulation at R5/inch Walls - Brick and Block with 1.5" air space and 2" of insulation at R6/inch Roof is Light Brick is Dark Roof weight is 7 psf Wall weight is 45 psf Slab edge has no insulation, there are no heating ducts in the slab. The floor is slab on grade and over 10 degrees F. The door is a full glass lite - single pane There are (540) 100-watt bulbs lighting the office space. Equipment includes 18,000watts of equipment and (1) 10 hp motor The north side of the building has 144' of glass 10 feet tall. The south side of the buiding has 144'of glass 10 feet tall There (2) large doors on the north each 3.5' wide and 10' tall