By Steve Doty
This sensible reference serves as a entire source for acting power audits in advertisement amenities. The booklet starts by way of explaining that once advertisement amenities are subdivided into different types according to enterprise sort, many beneficial styles will be pointed out which are appropriate to the functionality of an efficient power audit. It discusses techniques and guidance for quite a lot of company and construction varieties, similar to colleges, eating places, scientific amenities, grocery shops, laboratories, workplace constructions, non secular amenities, libraries, and warehouses. The ebook additionally covers construction power audit and evaluation, together with development envelope, lights, HVAC, controls, warmth restoration, thermal garage, electric structures and utilities
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For all roof openings to hoods and equipment not active in winter, dampers should be tightly closed during heating operation and when roof equipment is off. Demand limiting of central cooling equipment, and for VFD fans and pumps, to 85% capacity during peak demand periods. VAV—avoid supply air reset except in winter. VAV—avoid supply air reset that is based on return temperature. VAV—reduce supply duct static pressure. VAV—verify VAV box minimums are appropriately low and that the “heating minimum CFM” is no higher than the cooling minimum CFM.
Lock out cooling below 50 degrees F. • Lock out heating above 65 deg F unless dehumidiﬁcation cycle is needed. • Constant volume HVAC—supply air reset from demand to reduce reheat. Energy Saving Opportunities by Business Type • • • • • • • 43 VAV—avoid supply air reset except in winter. VAV—avoid supply air reset that is based on return temperature. VAV—reduce supply duct static pressure. VAV—verify VAV box minimums are appropriately low and that the “heating minimum CFM” is no higher than the cooling minimum CFM.
Overhangs or other exterior shading at windows. • Light color high emissivity roof for low rise buildings. • Toilet exhaust on demand (light switch) instead of continuous. • Low volume bathtubs. • Separate the water heating systems for 120, 140, and 160 degree hot water. • Gas-ﬁred PTACs instead of electric resistance. • Ground source heat pumps.