Lux - Wikipedia, The Free Encyclopedia
The lux (symbol: lx) is the SI unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square metre. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface ... Read Article
Physics Tutorials - YouTube
Scientific systems of units are a refinement of the concept of weights and measures developed long ago for commercial purposes.Science, later defined one standard atmosphere to equal precisely 1013250dynes per square centimeter (101.325 kPa). In 1743, the Lyonnais physicist Jean-Pierre ... View Video
THE BIMONTHLY NEWSLETTER OF THE DAYLIGHTING COLLABORATIVE Www ...
Commercial lighting trade show and con-ference. pare energy use or consumption across an entire building on a square foot basis, energy consumption per hour of operation, or even consumption per worker. X kWh x 3412 British Thermal Units (Btu) = X Btu 1 kWh Daylighting: Lighting Every ... Document Viewer
Solar Panel - Wikipedia, The Free Encyclopedia
Commercial use, depending on the They are also much lighter per square foot than standard rigid solar panels. The global flexible and thin-film photovoltaic (PV) market, despite caution in the overall PV industry, The actual voltage output of the module changes as lighting, ... Read Article
Northwest ENERGY STAR Homes
≤ 60 gal 0.61 Gas commercial tank water heaters may be used if they have OR use any efficient light source and lighting design to reach 0.6 Watts per square foot while meeting requirements coupled to thermal storage mass that has a heat capacity > 20 btu per ft3 ... Access Full Source
New Construction
Maximum payment is $0.15 per square-foot-gross lighted area or The New Construction Service team may assign a power rating (e.g., watts per fixture) for proposed lighting equipment that is not affected area for incentive calculation. 4. Lighting power densities must be based on designs ... Fetch This Document
IECC Envelope Provisions
(Commercial buildings) Section 502 35 pounds per square foot (170 kg/m 2) of wall surface area or (2) 25 pounds per square foot > 240,000 Btu/h 25% For SI: 1 Btu/h = 0.29 watts. 502.4.5 Outdoor air intakes and exhaust openings. ... Read Content
Northwest ENERGY STAR Homes
Gas commercial tank CFLs or pin-based lighting in 100% of fixtures9 OR use any efficient light source and lighting design to reach 0.6 Watts per square foot while facing within 45 degrees of true South and directly coupled to thermal storage mass that has a heat capacity > 20 btu per ... Fetch Doc
HVAC Refresher - Facilities Standard For The Building ...
• Lighting-especially the extensive use of incandescent and metal halide lights. Add 3414 Btu/hr for every 1000 watts of electronic equipment. requirements of CFM per square foot and air changes per hour (SMACNA 1990). Floor Space Type of Outlet CFM per Sq Feet ... Access Document
Engineering Analysis For Commercial Refrigeration Equipment
• Conversion from Watts to Btu/h [Btu/hr-W] Heat Load due to Lighting [Btu/hr] Heat Load due to Defrost Mechanism [Btu/hr] Cost per Square Foot Standard Polyurethane Foam High-Quality Polyurethane Foam Vacuum Panels R-Value Cost per Square Foot ... Retrieve Here
CHAPTER 2
Be estimated at 2.50 watts per kwh. If electricity is used. for lighting, at 25 Btu per square foot per hour of floor area. (2) above calculation and must be considered as part of. ... View This Document
COMMERCIAL BUILDING HVAC ENERGY USAGE IN SEMI-TROPICAL ...
COMMERCIAL BUILDING HVAC ENERGY USAGE IN SEMI-TROPICAL CLIMATES HELMUTH E. WORBS, in watts due to lighting and are factored into the calculation. Output also contains the watts per square foot for direct comparison to code limita- tions. Each building type by its nature, will ... Content Retrieval
Vectren Commercial/Industrial New Construction Incentive ...
$0.35 per watt Note: Lighting system must exceed the lighting power density requirements as mandated by ASHRAE 90.1 -2007 Table 9.5.1 Building Type Watts per square foot Building Type Watts per square foot Building Type Watts per ≥135,000 btu/h and <240,000 btu/h 11.5 EER $40 per ton 11 ... Doc Retrieval
Www.energystar.gov
Energy Usage per Square Foot of Conditioned Area Site BTU Savings, % Watts W/SF, per ASHRAE 90.1, Table 9.6.1 Baseline Lighting Allowance Basic Info Worksheet: square footage calculation was corrected and lighting was converted to W/sf. ... Access Doc
2009 IECC
If the unit’s capacity is less than 7,000 Btu/h, use 7,000 Btu/h in the calculation. Spaces that use less than 0.6 watts per square foot Internally illuminated exit signs shall not exceed 5 watts per side. 505.5 Interior lighting power requirements ... Read Content
ENERGY STAR Homes Northwest Montana & Idaho Program Requirements
≤ 60 gal 0.62 Gas commercial tank water heaters may be used if they have standby losses that do not exceed OR use any efficient light source and lighting design to reach 0.6 Watts per square foot.9 and not a series-parallel path calculation method. Additionally, ... Read Full Source
FUS-0435*; P-00981628.O; Citizens Tel. Co. Of New York
The TRM is intended only for standard measures that warrant standard energy efficiency calculation methods and assumptions. For existing commercial lighting, WSFeffic = the actual installed lighting watts per square foot or linear foot. Table 14: ... Visit Document
Guidelines For The Calculation Of Savings For Energy ...
Watts BASE,i = allowed lighting wattage per square foot based on energy code Watts EE,i = installed lighting wattage per square foot of the efficient lighting system for building or space type Factor of at least 0.62 and a nominal input of 75,000 BTU/hour Food Service – Commercial Gas ... Document Viewer
COM Software Version 3.9.2 Interior Lighting Compliance ...
Interior Lighting and Power Calculation A Area Category B Floor Area (ft2) C Allowed Watts / ft2 D Allowed Watts within commercial buildings are not required to comply with interior lighting Provide >= 1.75 Btu/h, or >= 0.50 watts per square foot of conditioned floor area. ... Read Here
Foot-candle - Wikipedia, The Free Encyclopedia
A foot-candle (sometimes foot candle ; abbreviated fc, lm/ft 2, or sometimes ft-c) is a non- SI unit of illuminance or light intensity widely used in the United States in photography, film, television, conservation lighting, the lighting industry, construction-related engineering and in building ... Read Article
City Of Omaha Commercial Alterations And Conversions Build &
Commercial Alterations and Conversions Building Permit Submittal Checklist Square footage (of each building/ tenant space) 6. Allowable area calculation Provide lighting power calculations and controls per IECC using COMcheck or ASHRAE ... Fetch Doc
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