Lecture_6.2_Energy_Estimate

# Lecture_6.2_Energy_Estimate - AE202 Lecture 6.2 Energy...

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©Moses D.F. Ling 2006 AE202 Name______________________ Lecture 6.2 Energy Estimate Date_______________________ Energy Estimating Reference: MEEB 10 th Edition, section 8.8, 8.9 Load vs. Energy Consumption Hourly maximum load [________________] SI Units _________ Energy usage [________________] SI Units _________ Fuel Heat Value Efficiency Cost [\$/unit] Coal 14,600 BTU/lb 65 – 75 No. 2 Oil 141,000 BTU/gal 70 – 80 Natural Gas 1,050 BTU/ft3 70 – 80 Propane 2,500 BTU/ft3 70 – 80 Electricity 3,412 BTU/KWh 95 – 100 Wood 7,000 BTU/lb 30 – 50 *Natural Gas CCF 100 ft3 x 1050 BTU/ft3 = 105,000 BTU MCF 1000 ft3 x 1050 BTU/ft3 = 1,050,000 BTU Therm 100,000 BTU

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©Moses D.F. Ling 2006 Yearly Space Heating Energy - Degree Day Method Degree Day - Climate data to indicate how long (days) and how cold (degree) the winter is for a given location. o DD 65 - Degree Day based on 65°F (standard) o DD 60 - Degree Day based on 60°F DD 65 based on the notion that heat is not required until it is ______°F outside (inside temp. 70-72°F). ______________ can sustain indoor temp. o Degree Day Counting positive number only Example: If the high temperature today was 45 and the low was 25, how

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• Fall '07
• LING,MOSESDF
• Heat, energy consumption, ©Moses D.F. Ling, D.F. Ling

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