In Europe energy audits are usually conducted under the terms of DIN EN 16247.

According to this, an energy audit is a systematically analysis of energy consumption of a commercial or other entity, comprising it‘s properties and vehicle fleet. The procedure is as described below:

• Introductory contact
• Kickoff meeting
• Data collection
• On-site assignment
• Analysis
• Report
• Final meeting

We also offer energy audits according to northamerican standard (ASHRAE). This comprises three audit phases:

1 WALK-THROUGH ENERGY AUDIT / ASHRAE LEVEL I ENERGY AUDIT
Within the scope of the walk-through audit we identify the essential energy efficiency potentials of a property, and compile it in a priority plan. Hereby the client receives a meaningful overview on the actual need für action, as well on the only reasonnable energy efficiency measures of his property. The report provides recommendations about “low-hanging fruit”, and the most easily implementable and no-cost to low-cost solutions.

2 RETRO-COMMISSIONING / ASHRAE LEVEL II ENERGY AUDIT

Within the Retro-commissioning we uncover and systematically evaluate energy and cost-saving opportunities associated with control optimization and no-cost to low-cost measures. In this process, we investigate most minor and major energy consuming systems in your facility to identify operational inefficiencies. Studies show retro-commissioning typically provides savings of 5-20% of a building’s annual energy costs.

3 INVESTMENT GRADE AUDITS WITH ENERGY MODELING / ASHRAE LEVEL III ENERGY AUDIT

3a) Investment audit

The main focus in this phase ist he examination and elaboration of investivment measures. The
Investment costs, the energy consumption and cost reductions as well as the rdeuction of climate gases will be determined. Here we compile packages of measures orienting on the criteria of the client (e.g. return, environmental relief)
3b) Building and HVAC simulation

For some special capital measures it can be reasonnable to combine detailed energy auditing and monitoring with building modeling, using state-of-the-art computer simulation tools. By developing a detailed and calibrated model that corresponds to measured building performance, simulations of various alternatives will be undertaken in oder to determine the most cost-effective investments in HVAC equipment, controls upgrades, and other system changes.

Energy Audits may differ from the scope of DIN EN 16247 or ASHRAE and can be customized to your individual demands.

Typical tasks are:

• Investment advice for replacement investments, e.g. for cooling towers, air handling units schemes
• Heat supply concepts
• Cogeneration
• Combined heat and power and cooling processes
• Cooling and Airconditioning concepts
• Ventilation concepts for production halls
• Optimization of cross-sectional technologies (lighting, cooling, ventilation, heating, electrical drives, compressed air)

As a certified auditor Winfried Haas assists you in the inauguration of energy management systems according to DIN ISO 5001, with the services listed below:

• Preparation of a energy management manual
• Energy audits
• Indentification of profitabel conservation measures
• Measurement & Verification concepts
• Design and implementation of energy monitoring systems

We conduct energetical inspections for cooling systems and air handling units according to the german Energy Saving Ordinance (EnEV).

Winfried Haas is certified energetical-technical advisor for learning energy efficiency networks.