By Albert Thumann
(The Fairmont Press, Inc.) complete reference of power engineering, providing a bankruptcy on codes, criteria and laws and a bankruptcy on compressed air. publications the reader throughout the program of ideas of power engineering within the layout of HVAC, electric, software, approach and development structures. DLC: strength resources--Handbooks, manuals, and so on.
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Additional resources for Handbook of Energy Engineering
Radiation pyrometerslimited in use for A/C work and costs from $500 up. Indicating crayonslimited in use and not considered suitable for A/C testingcosts around $2/crayon. Thermographsuse for recording room or space temperature; gives a chart indicating variations over a 12- or 168- hour period. Reasonably accurate. Low cost at around $30 to $60. ) Pressure Measurement (Absolute and Differential) Common devices used for measuring pressure in HVAC applications (accuracy, range, application, and limitations are discussed in relation to HVAC work) are as follows: Absolute pressure manometernot really suited to HVAC test work.
Previous page page_38 next page > < previous page page_39 next page > Page 39 3 Energy Auditing and Accounting Types of Energy Audits The simplest definition for an energy audit is as follows: An energy audit serves the purpose of identifying where a building or plant facility uses energy and identifies energy conservation opportunities. There is a direct relationship to the cost of the audit (amount of data collected and analyzed) and the number of energy conservation opportunities to be found.
Energy Use in Retail Stores Range (%) Norms (%) HVAC 20 to 50 30 Lighting 40 to 75 60 Special Functions 5 to 20 10 Elevators, General Power, Parking Security Lighting, Hot Water < previous page page_47 next page > < previous page next page > page_48 Page 48 Table 37. Energy Use in Restaurants Table Restaurant Fast Food Restaurant Norms (%) Norms (%) HVAC 32 36 Lighting 8 26 45 27 2 6 12 1 1 4 Special Functions Food Preparation Food Storage Sanitation Other Table 38. Energy Use in Schools Range (%) Norms (%) Environmental Control 45 to 80 65 Lighting and Wall Receptacles 10 to 20 15 Food Service 5 to 10 7 Hot Water 2 to 5 3 Special Functions 0 to 20 10 < previous page page_48 next page > < previous page next page > page_49 Page 49 Table 39.