foundation
2007
we turned the first sod
team player
Our members of staff
at your service
awards
world record holder
with the biggest Blower Door Test
operational area
worldwide
motto / slogan
„roads grow out of going them!“
Franz Kafka
experience
2500 projects
and many more
technical expert
for airtightness and thermal insulation
on buildings
since
more than 10 years
we have been working for your energy balance
In may 2009 the updated ventilation standard DIN 1946-6 was published after several years of revision. It is binding for all parties involved in the construction. The ventilation standard prescribes the ventilation of residential buildings (new buildings and renovations). It also establishes limit values and the calculation methods for the specified air exchange. For the first time DIN 1946-6 defines a verification procedure as to whether a ventilation system is required for buildings. A ventilation concept is essential for new buildings. A ventilation concept is also required for the repair / modernization of a building in the following cases.
rösemeier. creates your ventilation concept according to DIN EN 1946-6.
The energy certificate is a document that evaluates a building energetically. The exhibition, use, principles and principles of energy certificates are regulated in Germany in the Energy Saving Ordinance (EnEV).
In addition to the different legal obligations to submit an energy certificate, the energy certificate is used in particular as a planning instrument. In the case of new construction and refurbishment, the energy certificate is specifically designed to optimize the respective requirements.
The heating load calculation is used to determine how much energy a heating installation must give to keep a building warm. It follows a standardized procedure and is abbreviated by numerous building-specific influencing variables. The results of the heating load calculation provide information on the size of a heating installation. In doing so, they affect not only the performance of the heat generator itself, but also the size of heating surfaces such as radiators or heaters of a surface heating system. They define the heat demand of individual rooms and are therefore the basis for the dimensioning of the pipe network. In addition, the calculation of the heating load is also necessary when a hydraulic adjustment is carried out.
The expert for energy efficiency (energy consultants) is very important to you, as he plans the rehabilitation, supervises the implementation of the reconstruction work and ensures the quality of all the measures, so that your project can also contribute to the desired result.
New construction projects, residential and non-residential buildings, which are applied for or notified from 1 January 2009, are covered by the German Renewable Energy Heat Act (EEWärmeG). According to this, the heat supply of the building has to be covered by renewable energies to a certain percentage (depending on the technology chosen) or a so-called replacement measure has to be implemented. According to this law, the owners of the building must also prove the fulfillment of the requirements to a certain extent against the lower building authority.
A passive house is characterized by particularly high comfort with very low energy consumption. This is mainly achieved by passive components such as high-quality heat protection windows, insulation and heat exchangers.
The house heats and cools "passively".
As independent and certified experts, we produce your heat protection / EnEV certification according to DIN 4108/4701 or DIN V 18599 for residential and non-residential buildings.
The funding service finds the best funding for you and supports you with the applications. In the first step, our experts calculate the maximum funding from cash grants and loan terms for a measure. Before the start of the action, we will check the tradesmen offers you have received and advise you, if necessary, of the minimum technical requirements for subsidies. The next step is to help you apply for funding. Our experts will inform you which forms have to be filled out or which areas you have to contact personally.
In the case of KfW funding (for example, programs 430/431/152), our team confirms the eligibility of the submitted offers and provides the necessary proof of use.
An efficiency house is characterized by a particularly low energy consumption. The term "efficiency house" is a quality mark developed by the Federal Office for Transport, Building and Urban Development of the German Energy Agency and KfW.
In the promotional programs, this quality mark is reflected in various stages. It is also decided whether a new building will be constructed or an existing building will be renovated. In principle, the annual primary energy demand and the transmission heat loss must be demonstrated for each type of construction.
rösemeier. creates a coherent concept for you and supports you with the application for funding. The energy advice can help you reduce your heating costs and create a more comfortable room climate. When it comes to energy consulting, you do not necessarily need a new heating system or an overloaded insulation concept. In the energy consultancy, it is important to examine, calculate and analyze every factor that can influence the energy consumption. Only after an accurate inventory and calculations a statement can be made if a new acquisition or improvements are required. Unfortunately, the term "energy consultants" is not yet a protected term. This also provides many energy consultations from non-specialists, who are only out for profit. Do not let the concept frighten you. Good advice can save money.
Do you have any questions regarding the energy certificate or the subsidies which must be requested and checked by an energy consultant? rösemeier. is at your disposal from the renovation concept, energy advice according to the BAFA guideline, subsidy application, building supervision and acceptance of your project.
Proof of the summer heat protection by the method of the excess temperature hours. The heating and cooling operation of the building is anticipated by the thermal building simulation. In this case, all dynamic factors of the building operation (including weather conditions, space usage, component storage, control). The thermal building simulation is therefore also called dynamic building simulation.
Whether a new building or refurbishment to the KfW Efficiency Center and the implementation of individual modernization measures - in accordance with the guidelines for KfW funding - an independent expert already has to get involved for the application for the "Energy Efficiency Renovation" and "Energy Efficiency Building" programs. With this method the KfW wants to ensure that the targeted fundings are also achieved.
With the program 431 "Energy Efficiency Rehabilitation - Building Management", KfW subsidizes the energetic specialist planning and construction supervision by independent external experts as listed on Effizienzhaus-online. 50 per cent of the costs for the building management - a maximum of 4,000 euros per renovation project - will be reimbursed to the house owners with the subsidy. Eligible costs are the costs of planning, support for tendering and tender evaluation, control of the construction and acceptance as well as evaluation of the rehabilitation. Important: The commissioning of the independent expert for the construction supervision must be carried out before the start of the refurbishment and before the commissioning of the craftsmen.
The energy audit is an important tool to identify measures to increase energy efficiency and reduce energy costs. By determining how much energy is consumed in the company, it is also possible to identify where saving potentials exist. The economic benefit of the energy audit is therefore not to be underestimated.
All major companies are committed to an energy audit. In contrast to small and medium-sized enterprises (SMEs), large enterprises are defined as having at least 250 full-time employees or an annual turnover of at least 50 million euros and a yearly balance sheet total of more than 43 million euros. However, much smaller firms (SMEs) can also be affected by the energy auditing obligation. If public participation in a company is 25% or more, it is no longer considered as SMEs. For example, small companies working for a city can be forced to carry out an audit. Whoever has to perform an energy audit is described, among other things, in the Energy Services Act (EDL-G).
An exception to the rule is a company that is by definition large, but already has an energy or environmental management (DIN EN ISO 50001 or a validated environmental management system according to "Eco Management and Audit Scheme" - EMAS) or is about to implement one. Small and medium-sized enterprises, which are not obliged to audit, can voluntarily carry out an audit and even encourage it. Incidentally, an operational energy management is obligatory for top-level compensation.
You have questions about EDL-G? Would you like to be consulted on the topic or commissioned an energy audit? Contact us, we will be glad to help you.
The calculation of the EnEV non-residential buildings consists of the energy assessment and the calculation of the energy demand, according to the useful energy, final energy and primary energy for heating, cooling, ventilation, drinking water and lighting. The building is divided into assessment zones and supply areas. Spaces and areas of uniform use form a zone, they are distinguished in their condition. The calculation of the final energy requirement is made over each zone individually.
Non-residential buildings shall be constructed and designed in such a way that the annual primary energy requirement for heating, water heating, ventilation, cooling and built-in lighting is the value of the annual primary energy requirement of a reference building. Geometry, net floor area, orientation and use, including the arrangement of the units of use.
Thermal bridges are a constructive weak point of the building envelope through which a relatively small area is discharged. The dissipation of heat leads to a cooling of the component surface in the affected area. In the worst case, this can lead to surface condensation. The consequence of this can be, among other things, growth of molds which are harmful to health. In order to prevent these problems, a detailed calculation of the individual constructions can be performed by us in advance.
We carry out the following calculations:
Energy consulting is an important tool for identifying energy saving potentials in small and medium-sized enterprises (SMEs) through qualified and independent consultations and for energy savings. The consultation is designed to show weaknesses in the use of energy and to make proposals or concrete plans for energy-saving improvements. Sensible energy efficiency potentials can be demonstrated both in the areas of buildings and plants as well as in user behavior. In addition, the implementation of the savings potential, including the commissioning of measures by energy consultants, should be accompanied in order to further increase the implementation rate.
In the construction sector, thermography has become an indispensable tool in recent years. Destruction-free and fast buildings can be examined for defects in the insulation and air leakage. The results will be visualized and documented. We are certified according to DIN EN 473 Level II and stand for competent execution and high quality standards of the measurements.
High-performance infrared cameras with integrated software for high-quality thermal images and precise analysis and documentation are used. A thermal imaging camera converts the infrared radiation, which is invisible to the human eye, into electrical signals. From this, the camera creates an image in false colors or thermographic purposes rather rarely in a monochrome gray scale image.
The airtightness of a building is measured with the differential pressure measuring method (also: Blower Door Test). The method is used to detect leaks in the building envelope and to determine the actual air exchange rate.
We offer seminars and workshops in the field of differential pressure measurement (Blower Door Test) and building etherography at our company, on site, in-house trainings at the highest level.
Only an air-tight building can guarantee a pleasant and uniform room climate. As an important basic rule for the planning of air tightness, the principle of "a continuous, dense building envelope", which is easy to understand with the so-called "pin rule". The entire building envelope must be able to be operated without interruption in any drawing section with a pin. At each point, it must be clarified in detail how the airtight connection is established. This makes it clear that air density is primarily a planning task. Only what is clearly planned can also be made air-tight by the craftsman later.
We plan for you and with you the air-tight building envelope from your new building or conversion during the construction phase. We also carry out detailed planning of the individual trades under one roof. A quality assurance by a Blower Door Test with subsequent leakage detection is also part of our extensive range.
The A-value measurement is an airtightness measurement which is specifically used for the inspection of windows and doors. With the introduction of the European standard EN 12207, the Q-value now replaces the previously used A-value. Similar to the measurement of the building density according to DIN EN 13829 with the help of the Blower Door Test, a test pressure is applied to the component during the determination of the "impermeability" of windows and doors, and the air volume penetrates through the air. Furthermore, component connections and joints can already be tested in the early construction phase by means of the A-value measuring method in order to obtain initial insights into the quality of the airtightness.
The air density of large buildings has gained in importance in recent years. And this is not only because the requirements for airtightness are anchored in the Energy Savings Regulation (EnEV) and the Passive House construction method. Feasibility of energy-efficient and architecturally appealing buildings, but also because there are increasingly special requirements for the building envelope. An air density level of the building envelope is an important component for improving the energetic quality of buildings. Large buildings are built according to Din EN 13829 with an internal volume of more than 4000m³, which includes administrative buildings, hotels, shopping malls, industrial buildings, high bay warehouses, schools, retirement homes, swimming pools, logistics centers, production facilities and warehouses.
In Blower Door Tests of large buildings, a pressure distribution in all building parts must be guaranteed. According to DIN EN 13829, the pressure differences within the building must not exceed 10% of the generated pressure difference. In order to measure the air tightness in large buildings, the fans are combined and are built at suitable locations for pressure distribution throughout the building. These are controlled centrally for the measurement.
rösemeier. has the know-how and several FliB-certified examiners to check for you at home and abroad from single rooms to the whole logistics park of any size.
Various diminution measurements are required before commissioning cleanrooms. One of the necessary measurements is the Blower Door measurement for clean rooms. Here, too, air leakages must be minimized and uncontrolled volume flows prevented.
After all, infections and uncontrolled spreading of germs should be prevented. Since cleanrooms are often not very large and the tightness requirements are high, Blower Door measuring devices are needed which can even measure small volume flows safely.
With the Door-Fan-Test, the tightness of the room is measured without destruction in rooms with gas-extinguishing systems using highly sensitive sensors. Leakages and leaks such as cable cuts, pipe openings, badly formed ceilings, wall and floor connections or other structual defects can therewith be detected as well as the determination of the leakage volume flow.
As an independent and certified expert in airtightness, we check the airtightness and the relevant components for your personal character for private assessments and court reports.
The Door-Fan-Test supplies the measured values and data to calculate the holding time of gas extinguishing systems as well as for the design of permanent inerting systems. Contrary to a sample flooding neither the system has to be triggered nor the eventual ongoing business operation has to be interrupted which not only protects the environment, but also lowers the cost of a plant inspection.
Blower Door Test
Oberhausen
Blower Door Test as per DIN EN 13829
Leakage detection as per DIN EN 13829
Volume calculation as per DIN EN 13829 as well as DIN 277
Calculation of the building envelope as per DIN EN 13829
10.600 m²
58.200 m³
Minneapolis Blower Door Multiple Fan
Blower Door Test
Erfurt
Blower Door World Record 14. April 2013
Logistic warehouse Erfurt consists of 5 individual halls / fire compartments
192m x 528m x 13,5m in the centre (width x length x height)
101.376 m²
221.904 m²
1.346.746 m³
Blower Door Test as per Din EN 13829
Leakage detection as per DIN EN 13829
Volume calculation as per DIN EN 13829 as well as DIN 277
Calculation of the building volume as per DIN EN 13829
BlowerDoor Multiple Fan
Infiltec G54
Entire building preparation of the cerfication tests as per EnEV
Energetic planning of the retail park Berlin-Mahlsdorf
Berlin-Mahlsdorf
Energetic calculation for the projects with documentation of EnEV verification as per DIN V 18599
Creation of the energy certificate, calculation of component construction, valuation of renewable-energy heat act (EEWärmeG) as well as the certificates of the summery thermal insulation for 3 retail stores in Berlin-Mahlsdorf
Building 1 - 8.597 m²
Building 2 – 5.250 m²
Building 3 – 58.046 m²
Lindisfarne, Liapootah, Capel Street, Tasmania, Australia
Blower Door Test und advisory planning service for different airtightness concepts for 5 Server rooms / IT rooms
Variable room sizes
Blower Door Test as per DIN EN 13829 / ISO 9972
Leakage detection as per DIN EN 13829
Volume calculation as per DIN EN 13829 as well as DIN 277
Calculation of building envelope as per DIN EN 13829
Calculation of leakage area
Minneapolis Blower Door Multiple Fan
Blower Door Test
Hückelhoven
2 Blower Door Tests as per DIN EN 13829 for the EnEV verification of 12 units and an office block
Logistic warehouse Hückelhoven consists of 12 individual halls/ fire compartments
242m x 505m x 12m in the centre (width x length x height)
260.595 m²
1.443.544 m³
Office
1.794 m²
4.010 m³
Blower Door test as per DIN EN 13829
Leakage detection as per DIN EN 13829
Volume calculation as per DIN EN 13829 as well as DIN 277
Calculation of the building envelope as per Din EN 13829
Infiltec G54
Minneapolis Blower Door Multiple Fan
Energy audit as per DIN EN 16247
Liebenburg
Execution of an energy audit as per DIN 16247 – in Liebenburg with a total of 18 properties built between 1820 – 2003
Whangare
Opunake
Whanganui
Blower Door Test and advisory planning service for different airtightness concepts within 3 IT server/IT rooms
Variable room sizes
Blower Door Test as per DIN EN 13829 / ISO 9972
Leakage detection as per DIN EN 13829
Volume calculation as per DIN EN 13829 as well as DIN 277
Calculation of the building envelope
Calculation of leakage area
Minneapolis Blower Door
Door-Fan-Test
El Sauz, Mexico
Door-Fan-Test on a gas turbine
1.085 m³
Door-Fan-Test as per Din EN 1382 / ISO 9972
Leakage detection as per DIN EN 13829
Volume calculation as per DIN EN 13829 as well as DIN 277
Calculation of building envelope as per DIN EN 13829
Calculation of leakage area
Minneapolis Blower Door Multiple Fan
Energy certificate in the portfolio
Leinfelden-Echterdingen
creation of an demand-oriented energy certificate as per Din V 18599 mit 17 zones
Data acquisition on site
3D – presentation
59.216 m²
Energy consultation
Holzminden
Energy consultation for a swimming pool
Valuation of the property as per DIN V 18599 with variation of different repair options
creation of an demand-oriented energy certificate
Building thermographie
3 non-residential buildings
1968, extension 2014
2.012 m²
15.114 m³
Energetic planning of 50 residential units
Hanover
Creation of energetic concept of a KfW-55-residential complex
EnEV-verification as per DIN 4108-6 & DIN V 4701-10
Valuation of renewable-energy heat act (EEWärmeG)
Valuation of summery thermal insulation
Thermal building simulation as per DIN 4108-2
Calculation of heat bridges
Ventilation concept as per DIN 1946-6
2 buildings
50 residential units
Central heating
2016/2017
1.553 m² + 1.027 m² total space
Door-Fan-Test
Tzafit, Israel
Door-Fan-Test of 2 sound protection hoods on 2 gas turbines
1.493 m³
Door-Fan-Test as per Din EN 13829 / ISO 9972
Leakage detection as per DIN EN 13829
Volume calculation as per DIN EN 13829 as well as DIN 277
Calculation of the building envelope as per DIN EN 13829
Calculation of the leakage area
Minneapolis Blower Door Multiple Fan
Energy consultation in a mid-sized sector
Hessisch Oldendorf
Energy consultation in a mid-sized sector as per BAFA guidelines
Valuation of the property as per DIN V 18599 with varation of different repair solutions
Creation of the energy certificate
Blower Door Test as per DIN EN 13829
Building thermographie
non-residential building
1963
3.586 m²
19.675 m³
Blower Door Test
Kisa, Sweden
Planning of airtightness for air exchange rate <0,04 h-1
Accompanying quality control of the airtight level, as well as the a-value measurements during the construction phase
Blower Door Test as per DIN EN 13829
44m x 70m x 20m in the centre (width x length x height)
10.600 m²
58.200 m³
Minneapolis Blower Door Multiple Fan
Energetic planning of residential buildings and redevelopment projects, energy consultancy
northern Germany
During the last 5 years more than 400 properties: single-family homes, semi-detached homes, appartment buildings and estates of terraced houses
Creation of energetic concepts
EnEV verification as per DIN 4108-6 & DIN V 4701-10
EnEV verification as per DIN V 18599
Valuation of renewable-energy heat act (EEWärmeG)
Valuation of summery thermal insulation
Thermal building simulation as per DIN 4108-2
Calculation of heat bridges
Ventilation concepts as per DIN 1946-6
Blower Door Tests as per DIN EN 18829
29.10.2020
We are currently looking for
With a klick on the links you will be routed to the job description, from which you can take further details.
We are looking forward to hear from you!
Telephone:
05152 / 6901240
Address:
rösemeier.
Horstweg 16 / 18
31840 Hessisch Oldendorf
Fax: 05152/ 6901249
Email: info(at)roesemeier.com
rösemeier.
Horstweg 16 / 18
31840 Hessisch Oldendorf
Tel.: 05152 / 6901240
Fax: 05152 / 6901249
Email:
info(at)roesemeier.com
Internet:
www.roesemeier.com
Seitenbetreiber: Christian Rösemeier
Geschäftsführer: Christian Rösemeier
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rösemeier.
Horstweg 16 / 18
31840 Hessisch Oldendorf
Tel.: 05152 / 6901240
Fax: 05152 / 6901249
Email: info(at)roesemeier.com
© 2017 rösemeier.
rösemeier. GmbH & Co. KG
Horstweg 16 / 18
31840 Hessisch Oldendorf
Tel.: 05152 / 6901240
Fax: 05152 / 6901249
Email: info(at)roesemeier.com