3. Standard audit

This method of building auditing is used to assess all equipment and the associated operational systems and generate more elaborate calculations of energy use. It primarily identifies areas of potential technical improvements and makes recommendations based on their projected energy and cost savings.

Energy audit flow chart

Economic Aspects of Building Energy Audit DOI: http://dx.doi.org/10.5772/intechopen.85490

audited.

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Source: South African Energy Department.

of good practice within your industry;

use, as in the electricity demand profile;

audit, after the initial client meetings and historical data analysis,

According to South African Energy Department, the key steps in the energy

1. Conduct a walk-through inspection—to assess the general level of repair, housekeeping, and operational practices that have a bearing on energy efficiency, and to flag situations that have merit for further assessment as the audit is implemented, walk-through inspections will also be carried out to verify the findings of other analysis steps, as indicated in the flow chart; 2. Analyze energy consumption and costs—collect, organize, summarize and analyze historical energy billings and the tariffs that apply to them;

3. Compare energy performance—determine energy use indices and compare them internally from one period to another, one facility to a similar one within your portfolio, one system to a similar one; or externally to measures

4. Establish the audit mandate—secure commitment from management and

5. Establish the audit scope—define the energy consuming system to be

6. Profile energy use patterns—determine the time relationships of energy

define expectations and outcomes of the detailed audit;

A typical energy audit procedure is enumerated hereunder.


Though the procedure is not limited to the arrangement stated above since it varies from practice to practice and from country to country, most European nations now have legislation and practice procedure. In Spain, for example, the Ministry of Development and the Ministry of Industry, Energy and Tourism freely issues the Unified Tool Lider Calener energy audit simulation program to practitioners to comply with national regulatory framework on energy performance of buildings for the purpose of energy certification. Typically, energy audit process is shown in the flow chart below:

## Economic Aspects of Building Energy Audit DOI: http://dx.doi.org/10.5772/intechopen.85490

the view of avoiding a later investigation that could hamper the smooth running of

According to the New Jersey Energy Audit Guidance, there are three types of

This method is used to predict building systems performance taking external factors like weather into consideration. It is suitable for complicated buildings

This method of building audit uses visual inspection of a building's energy system and review of its energy data usage. It is a further referenced by way of comparison to industry's normative average. This form of auditing determines if a

This method of building auditing is used to assess all equipment and the associated operational systems and generate more elaborate calculations of energy use. It primarily identifies areas of potential technical improvements and makes recom-

further comprehensive audit is required. It is at best informative.

mendations based on their projected energy and cost savings.

• Energy simulation of the building in its current state.

• Economic calculation and calculation of paybacks.

• Selection of final measures, based on the previous results.

• Simulation of possible refurbishments.

A typical energy audit procedure is enumerated hereunder.

• Introduction of technical data into the HULC simulation program.

• Pre-selection of action measures based on the previous results.

• Quantification of savings in each of the refurbishments proposed.

Though the procedure is not limited to the arrangement stated above since it varies from practice to practice and from country to country, most European nations now have legislation and practice procedure. In Spain, for example, the Ministry of Development and the Ministry of Industry, Energy and Tourism freely issues the Unified Tool Lider Calener energy audit simulation program to practitioners to comply with national regulatory framework on energy performance of buildings for the purpose of energy certification. Typically, energy audit process is

• Quantification of losses and gains through the different elements of the

thermal envelop elements [12, 15].

systems and facilities.

Zero and Net Zero Energy

2. Walk-through audit

3. Standard audit

• Collection of building data.

thermal envelop.

shown in the flow chart below:

138

building energy audit which exists, namely

1. Computer simulation audit
