“Green ENERgy AudiTIng for a LOw CarboN Economy” Best practices on Simplified Energy Audits and policies / strategies will be influenced Rogelio Zubizarreta

“Green ENERgy AudiTIng for a LOw CarboN Economy”

Best practices on Simplified Energy Audits and policies / strategies will be

influenced

Rogelio Zubizarreta Jiménez Instituto Andaluz de Tecnología

THE GENERATION PROJECT

Contents

Objetives

Partners

Project Management

Best Practices

Policies / Strategies

Exchange and transfer of best practices & knowledge in Building Energy Audits in public buildings

Harmonisation of audit schemes to strengthen regional and European policy frameworks

Development of an innovative methodology

(Simplified Energy Audit – SEA)


Objetives

Knowing the performance of buildings in a cost-effective way


Partners

1) Andalusian Institute of Technology - IAT (Andalusia, SP)Lead Partner & Financial ManagerInnovation & Technology experts

2) The Environment Centre - tEC (South East England, UK)Communication ManagerSustainable development advisors

3) Province of Modena - PoM (Emilia-Romagna, IT)Legacy ManagerPublic Authority

4) AGH University of Science and Technology from Krakow (Malopolska,PL)Scientific ManagerUniversity


VALIDATION OF THE DEVELOPED TOOLS

IDENTIFICATION OF STAKEHOLDERS

Date Base loading

DEVELOPMENT OF A COMPUTER-BASED TOOL AND A METHODOLOGY FOR SIMPLIFIED ENERGY AUDITS

Relevant characteristics definition to evaluate energetic performance

of buildings

Physical model development

for energy building performance

Physical model adjustment

Methodology for simplified energy audits development.

Methodology for simplified energy audits validation

COMMUNICATION ACTIONS

Pro

ject Man

agem

ent

STATE OF PLAY ANALYSIS

Advisory Board definition:University - Public Organization – Private sector

Energy audits collection data (20 public buildings per region)

SWOT analysisBest practices identification

(Total of 8 BP)

MOVING FROM COMMUNICATION TO POLICY


Best Practices

No 1. Calculation of Energy Demand

No 2. Calculation of Operative Performances

No 3. Holistic calculation of energy reduction proposals

No 4. Analysis and Validation of Comfort Conditions

No 5. Analysis of Distribution of Energy Consumption

No 6. Sample Period

No 7. Behavioural Change

No 8. Cost-effectiveness


Best Practice No 1. Calculation of Energy Demand

Most often, the energy demand of buildings is not taken into account in an energy audit, due to the complexity of calculation (solar radiation, wind speed and direction, occupancy, lighting and equipment, etc.).

By omitting the energy demand, consulting firms are not really quantifying the measures to reduce it.

Calculation of energy demand will allow a reduction of a building’s energy consumption through the reduction of the demand itself.

The main objective of this best practice is to ensure that the tool provide a simplified way of calculating the energy demand of buildings.


Best Practice No 1. Calculation of Energy Demand


Best Practice No 2. Calculation of Operative Performances

Usually, calculations of energy consumption only consider nominal conditions “COP/EER” specified by HVAC equipment manufacturers forgetting an important deviation in respect to the operative conditions (even up to 50%).

This fact will then lead to incorrect calculations for improvements focused on the efficiency of the building’s HVAC systems.

Energy audits do not usually consider operative performances COP/EER of HVAC systems due to the complexity of measurement.

Calculation of operative performances COP/EER will permit consulting firms to quantify proposals focused on improving the efficiency of HVAC systems.


Best Practice No 3. Holistic calculation of energy reduction proposals

The energy reduction proposals should be based on coherent technical analysis where each factor is connected with all the others.

Example: increasing the building walls thermal insulation should result in a reduction of the level of space heating thermal power needed.

Modifying both walls thermal insulation and heating thermal power could be incompatible!

The approach will enable consulting firms to apply the methodology in order to achieve optimal solutions, covering each of the main elements influencing energy demand and energy consumption in buildings.


Best Practice No 4. Analysis and Validation of Comfort Conditions

The state of art analysis has showed that the consulting firms often do not consider comfort conditions in energy audits.

Omitting comfort conditions may result in a deterioration of comfort standards compared with user requirements: oversizing the energy system.

Analysis of building comfort conditions can result the optimization of energy demand and energy consumption.

The main objective of this best practice is to ensure that the comfort conditions analysis will be applied in simplified energy audits: optimal economic effects.


Best Practice No 4. Analysis and Validation of Comfort Conditions


Best Practice No 5. Analysis of Distribution of Energy Consumption

The metered electric data is usually available on a monthly basis. Using this data it is possible to distinguish the HVAC system from all other loads by comparing the load in the months when this system is on with the load in the months when is off.

The separation of the other electric loads (lighting, equipment, etc), may only be achieved by calculating analytically their single amount, for example summing up all lighting equipment power and estimating the hours of operation

The main objective of this best practice is to provide suggestions to energy auditors on the easiest solutions for separating the different loads within a building.

Using the obtained information the energy auditor can identify energy waste and suggest interventions and improvements.


Best Practice No 5. Analysis of Distribution of Energy Consumption


Best Practice No 6. Sample Period

The acquisition of electric loads requires a higher sampling frequency and a shorter time duration; while thermal flow meter data requires lower frequency sampling over longer time periods.

The flow meter sampling duration for obtaining separate flows is typically a full thermal season, and the sampling frequency may be once per month.

In the case of acquiring electric consumption data the duration of the acquisition time should be at least some months, in order to separate the HVAC system load from the basic load due to artificial lighting and equipment.

The main objective is to suggest a suitable sampling time and frequency for the two types of consumption data for energy auditors requiring more detailed information on energy flows.


Best Practice No 7. Behavioural Change

It is essential that people are made aware of the small changes they can make in their day to day use of their building, to make significant energy savings.

It will produce a behavioural change document, with recommendations for reducing energy demand and consumption.

In the case of public buildings which have frequently changing visitors, staff within buildings could create a behaviour change campaign, using posters etc.

The main objective of this best practice is to encourage inhabitants of public buildings, and the wider public, to modify their behaviour in order to reduce the energy demand and consumption within the buildings they inhabit.


Best Practice No 8. Cost-effectiveness

High cost has been found to be a barrier to the take up of energy audits, particularly in large/complicated buildings owned by public bodies.

The tool will be formulated so that non-specialists are able to use it to carry out audits. The user must have a reasonable degree of knowledge of energy systems/energy auditing. The quality of the results and recommendations should not be compromised, but should be balanced against costs.

The main objective is to ensure that the methodology and tool provide a way of conducting energy audits in a more economical manner (saving time, initial costs and human resources).


POLICIES AND STRATEGIES TO BE INFLUENCED

BUILDING SECTOR

Responsible for about 40% of EU’s final energy consumption and CO2.

Potential for cost-effective energy savings (EU will consume 11% less final

energy in 2020).

PROJECT’S CENTRE OF GRAVITY To improve energy efficiency of the partner regions through regulation,

promotion and policies. To promote a Low Carbon Economy through:

• Greenhouse gases in public buildings.

• Reduction of energy consumption.Reduction of carbon footprint


POLICIES AND STRATEGIES TO BE INFLUENCED 20-20-20% TARGETS

Reduction of:

Increase of:

EU ACTION PLAN FOR ENERGY EFFICIENCY Highlights the importance of Energy Audits to supply useful information

which is often difficult to obtain, and identify energy-saving opportunities.

ENERGY END-USE EFFICIENCY AND ENERGY SERVICES DIRECTIVE (2006/32/EC)

To develop efficient and high quality energy audit schemes. To use energy efficiency and demand-side management as alternatives to

new supply and for environmental protection.

• 20% of energy consumption

• 20% of greenhouse gas emissions

• 20% of share of renewables


POLICIES AND STRATEGIES TO BE INFLUENCED

TO SUM UP, THE GENERATION PROJECT...

Will allow strengthen regional policy frameworks through the transfer of

knowledge and harmonization of audit schemes.

Obtained sustainable results can be mainstreamed at the European level and

beyond.

Improves the effectiveness of regional development policies and instruments

through the exchange, sharing and transfer of policy experience, knowledge

and best practices.

The GENERATION project will deliver mainstreaming results that will

facilitate the transition towards a low carbon economy, contributing to improve

the triple vertex of sustainable development: environment, economy and

social.


IAT Málaga and

International Programmes Unit

Tfno. 95 446 80 10

Fax: 95 446 04 07

http://www.iat.es

c/Leonardo da Vinci 2

Isla de La Cartuja

41092 Sevilla

THANK YOU FOR YOUR ATTENTION!

Documents

“Green ENERgy AudiTIng for a LOw CarboN Economy” Best practices on Simplified Energy Audits and policies / strategies will be influenced Rogelio Zubizarreta