By Stan Harbuck
This booklet is for strength auditors or retrofitters, whether or not they paintings within the weatherization software or within the deepest enviornment, and is meant to aid them arrange for a number of certifications. those contain courses with BPI, RESNET-HERS, DOE/NREL, and AEE (Association of power Engineers). the fabric during this publication comprises techniques and strategies and is meant to be a tutorial source. subject matters lined contain the home as a method, the auditor’s instruments, weatherization, sealants, insulation and limitations, retrofitting, heating and cooling, baseload, and new building. a couple of extra appendices are incorporated to supply the reader with priceless info within the functionality of a residential power audit.
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Additional info for Residential Energy Auditing and Improvement
Figure 2-22 shows an example of window label. Low-e film is placed on the inside pane of a two-pane window in areas that are primarily heating dominated climates, but on the out- Figure 2-22. Sample NFRC Label for Standardizing Winside pane in ar- dow Characteristics 26 Residential Energy Auditing and Improvement eas that are primarily cooling dominated climates, see Figure 2-23. Most radiation, except for visible light, cannot be seen without the use of special equipment. In the case of the infrared spectrum, using an infrared camera can help detect infrared radiation that would otherwise be unseen with the naked eye.
Primary and Secondary Air On a gas stovetop burner, the secondary air mixes next to the flame by entering from down below the burner. Part of both the primary and secondary air is used in the combustion process and part passes through as excess air (see “excess air” below). ” The losses in energy that occur as a result of the escaped gases that were part of the combustion process are framed in terms of “sensible” and “latent” heat losses. The sensible heat losses due to combustion gases are simply the losses of energy due to heating these gases only to lose them out the flue.
Where it is generated, as shown in Figure 2-42. Energy Basics 41 Figure 2-42. Electric power is lost in the process of transmitting it across power lines. One of the benefits of on-site generation of energy such as by solar photovoltaic panels is that there is little transmission loss. Natural gas must also be transported involving expensive pipeline and pumping stations. Fuel oil also can be expensive to transport by truck, etc. Therefore, in addition to combustion efficiencies, all these other factors must be taken into account, Figure 2-43.