Energy Efficiency / Energy Consultancy

ENERGY EFFICIENCY IN PUBLIC BUILDINGS

Customer: Central Denmark Region and 11 of the region’s municipalities
(CeDEPI – Central Denmark – Energy Planning and Investment)
Period: 2015-2019
Area: N/A – Framework
Type of buildings: All types of public buildings

Danish Energy Management & Esbensen in cooperation with KPF Architects, DRIAS Consulting Engineers and AURA, signed a four year framework agreement regarding energy efficiency in public buildings within the region and 11 of the region’s municipalities.

The efficiency includes the thermal envelope, installations, systems and facilities as well as investments in solar systems, and there will also be conducted energy screenings, project planning, and design and energy labeling.

So far, the framework agreement has resulted in a contract with Ringkøbing-Skjern Municipality concerning energy optimization of Tarm School, and a contract with the City of Horsens on converting heat supply in 6 properties.

Energieffektivisering5
Central Denmark Region

ENERGY RENOVATION OF 68 MUNICIPAL BUILDINGS IN HELSINGOR MUNICIPALITY

Customer: Helsingor Municipality
Period: 2014-2018
Area: Approx 180.000 m2
Type of buildings: Municipal buildings

As part of Helsingør municipality’s climate plan with the goal of reducing 2 % of the CO2 emissions every year until 2025, the city council allocated 56 million DKK (ex. VAT) in 2014 for energy renovation of selected municipal buildings during the period 2014 to 2018.

In a consortium with Bascon, Danish Energy Management & Esbensen (DEM-ESB) has been in charge of the individual sub-contracts for the energy renovation part, which has included 68 buildings within the categories culture, sports, schools and day care centers.

During the screening phase, DEM-ESB has assisted the municipality with registration and verification of incoming suggestions for energy renovations. DEM-ESB has come up with additional possible suggestions and registered all the suggestions in individual tables for each of the buildings, including validation of data such as CO2 emission savings, energy savings in DKK, budgets for individual sub-contracts and their expected costs, payback period etc.

Furthermore, this lead consultancy contract has included the following services for energy optimization within broad technical spectra: solar cell panels, window replacements, re-insulation, ventilation systems, heat systems, lighting systems, CTS etc.

Consultancy services:

• Registration and financial calculations
• Project design
• Tendering for individual sub-contracts
• Construction management and health and safety coordination
• Technical supervision
• Commissioning
• Follow-up on energy savings
• 1 year reviews

This project has been implemented with a total payback period of 10 years, which is in line with Helsingør Municipality’s strategy and goal.

Public library in Espergærde

HVIDEBÆK DISTRICT HEATING PLANT

Customer: Hvidebæk district heating plant
Period: Started in January 1991 – will continue to run
Area: N/A
Type of buildings: District Heating Plant

Danish Energy Management & Esbensen is co-owner of Hvidebæk Heating Plant, http://www.varmevaerk.dk/, and has provided advice to the establishment and further development of the plant.

This includes the development of one of the country’s first remote reading systems for the consumers.
The system has over time been developed to achieve the best options for the collection, processing and dissemination of energy data for the district heating supply.

In 2012, a solar thermal system was established. A solar thermal system of around 12,000 m2, including a 2,500 m3 storage tank with an annual production of approx. 6,150 MWh nationwide – about 23% of the total heat.

Hvidebæk district heating plant

CONSULTATIVE TURNKEY CONTRACTOR FOR PERFORMANCE TESTED ENERGY OPTIMIZATIONS

Customer: The Danish Building and Property Agency
Period: 2016 – 2017
Area: 143.000 m2
Number of buildings: 12
Type of buildings: Offices, storerooms, classes and exhibition rooms

The Danish Building and Property Agency wishes to implement energy saving measures, which will reduce the energy consumption with at least 15 % in the buildings in question.
The aim of the project is to test the Danish Building and Property Agency’s newly developed performance testing tools for energy efficiency improvement of existing technical facilities. The tests put forward several demands for the technical facilities’ energy efficiency and the underlying basis is a prior analysis of parameter data from several technical facilities.

During the implementation of the performance tests, Danish Energy Management & Esbensen (DEM-ESB) has drawn on specialist knowledge for the handling of pre-requisites. The already completed tests will ensure the functionality of the energy saving technologies for water heating and adjustments of indoor climate in buildings.
Besides ensuring a reduction of the Danish Building and Property Agency’s energy consumption, this project will also assess and further elaborate on the use of the performance tests for energy efficiency in order for the building owners and administrators to ensure an energy efficient operation and maintenance of the buildings’ technical facilities.

The primary task for DEM-ESB is to improve the energy efficiency in 12 buildings with a total building stock of app. 143.000 m2. In the buildings, DEM-ESB will provide energy efficient services within the areas of CTS, hot water installations, heating and ventilation systems, heat distribution between buildings and on ground, lighting, electricity generation (solar PV), refrigeration equipment and building envelope.

On a daily basis the buildings in question are used for offices, storerooms, classes and exhibitions. Some of the buildings are even listed and/or worth preserving.
An energy management system will ensure a continued monitoring of the buildings’ energy consumption broken down by type. This system will systematically collect, analyze and present the buildings’ energy data.

Police station in Karlslunde

ENERGY SCREENING AND ASSESSMENT OF INDOOR CLIMATE FOR OFFICE DOMICILE

Customer: Danish Management Group
Type: Energy screening and assessment of indoor climate
Period: 2016 – 2017
Area: 1.896 m2
Number of buildings: 1
Type of building: Office domicile

Danish Energy Management & Esbensen’s (DEM-ESB) mother company Danish Management Group A/S has always placed great emphasis on renewable energy and energy efficiency. Danish Management Group A/S owns more green electricity than it uses and the company is the co-owner of a green district heating plant, where heat is generated from the sun and from burning straw.

Without compromising the indoor climate, DEM-ESB always strives to improve the company’s internal use of renewable energy and make greater use of energy efficiency.

With this in mind, DEM-ESB has conducted energy screenings and indoor climate analyses of Danish Management Group’s headquarters in Viby to map out possible ways to reduce the building’s energy consumption and make greater use of renewable energy sources. The initiatives pointed out are the establishment of solar systems, replacement of lighting fixtures and optimization of existing ventilation systems.

DEM-ESB also assessed the effect of an improved indoor climate by comparing the share of sick days with the ventilation rate for the specific building section.

The recommended actions will reduce the building’s CO2 emissions with more than 18 ton.

Danish Management Group, Headquarters

NEW INNOVATIVE HYBRID VENTILATION SYSTEM INSTALLED IN BUILDING FRONT

Customer: Syddjurs Municipality and
CeDEPI (Central Denmark Energy Planning and Investment)
Type: Renovation of building facades at Mørke Skole
Period: 2016 – 2017
Area: 5.000 m2
Number of buildings: 1
Type of building: Public school

Mørke Skole in Djursland is a typical Danish public school. Its building front was in a bad state and the ventilation rate was limited. This caused indoor climate challenges in the day-to-day use of the school. In order to improve these conditions, the original lightweight facade and windows were replaced by new energy optimized front parts with integrated hybrid ventilation.
The hybrid ventilation consists of micro ventilation units and natural ventilation through automated windows controlled from inside the building. An integral part of the project has been to move a large part of the existing facilities to new locations.

During the implementation, Danish Energy Management & Esbensen (DEM-ESB) also had to carefully handle the PCB found in the facade parts.

The renovation of the building facades reduces the heating costs and improves the indoor climate because the density and the increased degree of insulation minimize the risk of drafts.

Public school in Mørke

ENERGY SCREENING AND RENOVATION OF RINGKØBING-SKJERN’S MUNICIPAL BUILDINGS

Customer: Ringkøbing-Skjern Municipality and
CeDEPI (Central Denmark Energy Planning and Investment)
Type: Energy screening
Period: 2015 – 2017
Area: 25.000 m2
Number of buildings: 9
Type of buildings: Municipal buildings

CeDEPI – Central Denmark Energy Planning and Investment is supported by the European Investment Bank (EIB) with funds for counselling and preparation for investments within energy efficiency.

With the purpose of investigating, analyzing and preparing tender dossiers for energy saving initiatives within 9 buildings in Ringkøbing-Skjern Municipality, CeDEPI entered into a collaboration agreement with Danish Energy Management & Esbensen (DEM-ESB).

Throughout many years, Ringkøbing-Skjern Municipality has given priority to strategic initiatives for the energy optimization of their municipal buildings.
The different initiatives have included energy saving measures such as re-insulation of roofs, technical insulation, replacement of pumps and ventilation systems as well as putting in new energy efficient lighting systems. The total payback period for the projects must be less than 13 years.

For all the energy saving initiatives under this contract, DEM-ESB has been in charge of energy screening, project design and tendering of individual contracts.

Public school in Tarm

SPECIAL FOCUS ON ENERGY OPTIMIZATION AND INDOOR CLIMATE

Customer: Egedal Kommune
Type: Energy screenings and condition assessment of the buildings in Egedal Municipality
Period: 2015 – 2016
Area: 178.000 m2
Number of buildings: 80
Type of buildings: Municipal buildings

Egedal Municipality has initiated the programme ”Prepared for the future”, which aims to ensure a continued economic latitude by means of several efficiency improvements over the years to come. These efficiency improvements will form a solid foundation that will help the municipality stay desirable for settlements because it has a healthy municipal economy.

One of the initiatives in the programme is the energy screening project called ”Energy screening of constructional systems”, and this involves an assessment of 80 buildings within the categories nurseries, day care centres, youth centres, schools, sports clubs and clubhouses. The aim is to identify possible ways to improve the energy consumption and the indoor climate.

On the basis of the recommendations laid out by the energy screening project, the suggestions for improvement will be further planned, put out to tender and implemented in the buildings. The recommendations are described in individual screening reports, which also map out the technical installations and include a condition assessment. The screening report is formed on the basis of detailed technical reviews made in collaboration with technical staff, the available energy data for the respective building and not least the building users’ personal experiences and opinions about the building’s functionality and indoor climate.

The total energy savings from the identified measures is a 15 % reduction of the heat consumption and a 22 % reduction of the electricity consumption. The total contract amount for this project includes energy saving measures that significantly improves the indoor climate and/or the building’s operation and maintenance.

As part of the energy screening project, a user survey will be conducted to assess the indoor climate and analyze the need for future energy awareness and energy-efficient behavior. The user survey takes the form of a questionnaire and the underlying basis is the DS 3033 guidelines concerning mapping of indoor climate inconveniences.

Public school in Ganløse

RENOVATION OF VENTILATION SYSTEMS AT 5 SCHOOLS AND THE CITY HALL IN SØNDERBORG

Customer: Sønderborg Municipality
Type: Energy renovation
Period: 2015 – 2016
Number of buildings: 6
Type of buildings: 5 public schools and the city hall

Sønderborg Municipality has an ambitious climate policy that aims to contribute to the region’s overall strategy of becoming CO2 neutral in 2029. The goal is to be obtained through energy-optimized operations – including replacement of ventilation systems. This is part of an overall plan to ensure a healthy indoor climate for adults and children.

Danish Energy Management & Esbensen (DEM-ESB) has undertaken screenings of the ventilation systems at 5 schools in order to identify steps for future energy efficient operations and improved air quality within the buildings. DEM-ESB identified initiatives that would result in annual savings of 10.000 kWh of electricity and 230.000 kWh of heating, which corresponds to annual financial savings worth 132.000 DKK/year. The total payback period is 10 years.

DEM-ESB has been in charge of the project design, the tendering phase and the professional supervision during the implementation period.

 

Public school in Augustenborg

CUSTOMIZED AND ENERGY EFFICIENT LIGHTING SYSTEM

Customer: Central Denmark Region, Norddjurs Municipality
Type: Energy optimisation
Period: 2015 – 2016
Area: 3.800 m2
Type of buildings: Sheltered residence

Tangkær is a sheltered residence with two units; one for people with complex and severe mental disorders and one for people suffering from Huntington’s disease. The residence was built in 1974 and most of the technical facilities originate from back then.
As part of the Central Jutland Region’s ambitious energy strategy, the lighting system at Tangkær has been upgraded and adapted to the users of the building by means of a new energy efficient control system. This control system was selected in close collaboration with the staff at Tangkær.
DEM-ESB has been in charge of the design, planning and professional supervision throughout the project implementation period.

Sheltered residence, Tangkær

CONVERSION OF HEAT SUPPLY

Customer: Freja Ejendomme
Type: Conversion of heat supply: from natural gas to district heating
Period: 2015 – 2016
Area: 60.000 m2
Type of buildings: Haderslev Hospital

Haderslev hospital is currently owned by the State property company Freja Ejendomme A/S, who is in charge of operation and maintenance. Freja Ejendomme took over the operation of the buildings in the end of 2014 and expects to sell Haderslev hospital to an entrepreneur within the next 5 years. Therefore, the point of departure for the feasibility study is a 5-year operation period.

The hospital was built in 1975 and the total industrial area covered by the 5 buildings is 60.300 m2. Today, some of the buildings are rented out to the Danish Immigration Service and used as refugee center. The rest of the buildings are either empty or are currently being emptied.

Danish Energy Management & Esbensen (DEM-ESB) has analysed the potential for conversion of the heat supply from natural gas to district heating. This was done on the basis of different scenarios for the future use of the buildings. The possibility for upgrading the heat distribution system and the heat emitters in certain buildings was also explored.

Haderslev Hospital (Photo: Freja Ejendomme)

ENVIRONMENTAL REPORTING, VALLENSBÆK MUNICIPALITY

Customer: Vallensbæk Municipality
Period: 2015

Vallensbæk Municipality is highly engaged in environmentally friendly issues and every year they publish an environmental report that sums up the municipality’s effort and results from their work with sustainability and energy consumption within the municipal buildings.

They use the environmental report to find out which activities actually make a difference and which ones require extra attention.

In the effort to reduce the municipality’s climate impact, 5 buildings have been energy renovated during 2014. In this regard, Danish Energy Management & Esbensen (DEM-ESB) was responsible for data collection and data assessment. DEM-ESB was also responsible for the development of the 2014 environmental report.

Photo from Vallensbæk Municipality Environmental Report 2014.

ENERGY SAVING MEASURES IN MUNICIPAL SPORTS HALLS

Customer: Herning Municipal and
CeDEPI (Central Denmark Energy Planning and Investment)
Type: Energy optimisation in sports centres
Period: 2015
Type of buildings: Municipal sports halls

Herning municipality is part of the “Green Cities” programme with the stated objective to reduce the emission of greenhouse gasses with 25 % compared to 2007. Among other things, the programme aims at making the municipal buildings more energy efficient.

In four sports halls, the original lighting systems were replaced by energy efficient systems with LED light sources, the existing ventilation systems were upgraded to modern high efficiency heat recovery systems and heating was now supplied by radiant panels.

Danish Energy Management & Esbensen (DEM-ESB) assessed the existing project material and submitted recommendations for improvements in order to ensure the best possible deliverables and project result.

Nordvest sports hall

MAPPING OF THE ENERGY OPTIMIZATION POTENTIAL AT HORSENS REGIONAL HOSPITAL

Customer: CeDEPI, Central Denmark Region
Type: Energy screening
Period: 2015
Area: 61.300 m2
Type of buildings: Horsens Regional Hospital

CeDEPI – Central Denmark Energy Planning and Investment is supported by the European Investment Bank (EIB) with funds for counselling and preparation for investments within energy efficiency.

With the purpose of investigating and analyzing the energy saving potential at Horsens Regional Hospital, CeDEPI entered into a collaboration agreement with Danish Energy Management & Esbensen (DEM-ESB).

This project was customized to the 2013 General Plan at Horsens Regional Hospital and recommendations for energy optimizations have been coordinated with respect to the timeframe of this plan. Therefore, parts of the energy optimizations will be done in parallel with the restoration of the other hospital buildings included in the 2013 General Plan.

Based on screenings conducted in the hospital buildings, energy saving initiatives for plumbing, ventilation, building envelope, building management system, lighting and solar cell panels were identified. The recommended energy optimization will reduce the heat consumption by 59 % and the electricity consumption by 25 % and will also bring forward non-energy-benefits such as improved thermal, atmospheric and optical indoor climate.

Horsens Regional Hospital

GREEN GROWTH PROGRAMME IN AMBITIOUS MUNICIPALITY

Customer: Halsnæs Municipality
Period: 2013
Type of buildings: Municipal buildings

In close collaboration with Halsnæs Municipality, Danish Energy Management & Esbensen (DEM-ESB) has implemented an ambitious green growth programme that aimed at providing the municipality with economic space and at the same time generate local jobs.

In 25 different buildings, energy saving measures worth 8,5 million DKK were introduced for improving the building envelopes. At schools, kinder gardens and youth centers app. 2.500 m2 of solar cell panels worth 7,2 million DKK were installed.

Danish Energy Management & Esbensen (DEM-ESB) has been in charge of energy screenings, project design, tendering and implementation.

Halsnæs City Hall – FOTO: Evishine