Pretty good is not good enough!
Benefit, System perspective & Long-term relationships
About us
OUR GOAL
UTILITY
It is the headline of our corporate agenda. How can we create more utility? We devote ALL OUR energy to achieve utility. This gives us a head start against our competitors and a space for profitability that can be openly discussed with our customers.
SYSTEMS PERSPECTIVE
A newer cooling machine working on a new technology can result in a lower energy consumption, further a heat recovery on the hot side can yield good numbers on the heating bill but…
A newer air handling unit with an efficient heat exchanger and an improved control strategy could reduce the need of both heating and cooling, but…
A pressure relief on the ventilation channels could result in half the energy needed to supply the same volume of air and hence… everything is related, and it is rewarding to ponder.
We are neither a ventilation firm, nor a cooling machine seller, nor a BMS supplier. We have several collaborations, but we are not bound to anyone. We think in a systems perspective and together with you, we set the system boundaries/goals.
LONG-TERM RELATIONSHIPS
Returning customers are evidence that we take responsibility for the things we promise and the things we do. By maintaining a high level of credibility, we can remove the concept of “sell” from our business and instead invest our energy into “UTILITY”. And we know that this is where the results lie for both us and our customer.
ENERGY EFFICIENCY IN FACILITIES (EEF)
Our way of working
We work with the market for existing buildings, especially commercial buildings. Our project portfolio includes grocery stores, shopping centers, office buildings, warehouses, logistics halls, clean rooms, etc., …
When we focus on our goal, “UTILITY”, we see great opportunities to improve the corporate economy through a model of working that is in contrary to the traditional market.
With this model, we can take responsibility and follow up the results of our work. The model guarantees commitment and professional pride that allows us to be passionate year after year after year.
“We” as a collective, cannot afford to continue working with sub-optimal purchasing processes, that invent their own costs along the way and causes all the stakeholders to deviate in their own directions. “We” must agree on our goals, dare to trust each other, and administer that trust.
We estimate a 20% cut on the project costs through our model and a minimum of 15% higher energy savings than usual… and occasionally even higher!
HEAT RECOVERY – GREY WATER (HX)
Now that’s how Geiser™ works!
Geiser™ Heat Exchanger
The used warm water, which is usually flushed down the drain, is instead passed through our heat exchanger (HX), where it warm-s up the cold water that is on its way to be heated.
Geiser is a patented heat exchange solution with unique abilities such as:
- delivers a heat exchange efficiency of 65% at equal greywater (shower water) and freshwater flows.
- transfers heat from water containing hair, skin and soap residues, without a loss in efficiency or a need for periodic maintenance.
Geiser™ S Heat Exchanger
- The cold water is preheated through the HX one floor below the shower.
- The preheated water is supplied through the cold-water outlet in the shower mixer.
- The greywater is extracted through a separate drain and passed through the HX, before joining the general sewage (black water).
Geiser™ M Heat Exchanger
- Cold water is pre-heated by the HX-unit, before the it joins the warm water production.
- Shower water is extracted through a separate drain connected to the HX and further connects to the general sewage (black water).
- A bypass is installed on the cold-water supply. The flows through the HX can vary as the hot water is also supplied to other consumers and not just showers. Hence it is necessary to install a bypass in case the hot water production is so large that it creates a large pressure drop across the HX. The bypass opens with a control signal from a pressure gauge placed across the HX.
Note: To prevent transportation energy losses, we suggest insulating the shower drainage pipe by at least 5mm.
Swimming pools/Sports facilities
Geiser™ M Heat Exchanger
If your swimming pool has:
- the possibility of separating greywater (shower water) from black water (general sewage).
- more than 20,000 visitors/year
- a heat requirement that you are paying
Benefits of Geiser:
- Developed with state-of-the-art technology
- Requires minimal maintenance
- Self-cleansing
- Integrated control system with an energy flow measurement for easy follow-up
- Very high and very stable temperature efficiency over time
- Requires minimal floor space
- Possibility to scale up/down depending on changing conditions like an extension or rebuild
- Has a short payoff time
Housing facilities – under renovation
Geiser™ S with a cassette solution
- The cold water is preheated through the HX one floor below the shower.
- The preheated water is supplied through the cold-water outlet in the shower mixer.
- The greywater is extracted through a separate drain and passed through the HX, before joining the general sewage (black water).
Housing facilities – new constructions
Geiser™ Multi-Verts in a common Heating Central
- Cold water is pre-heated by the HX-unit, before the it joins the warm water production.
- Shower water is extracted through a separate drain connected to the HX and further connects to the general sewage (black water).
- A bypass is installed on the cold-water supply. The flows through the HX can vary as the hot water is also supplied to other consumers and not just showers. Hence it is necessary to install a bypass in case the hot water production is so large that it creates a large pressure drop across the HX. The bypass opens with a control signal from a pressure gauge placed across the HX.
Note: To prevent transportation energy losses, we suggest insulating the shower drainage pipe by at least 5mm.
Villas, Hotels, Winter sports facilities, mountain cottages
A Geiser™ adapted to your needs
Contact us and we will find a solution for your unique needs.
REFERENCES
RUAG Space/Klövern, Gothenburg (EEF)
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Facts
| Customer: | Klövern Göteborg / RUAG Space |
| Start of rebuild: | Dec 2017 |
| Final inspection: | Ongoing |
| Follow-up: | 2 years |
| Investment: | approx 15,8 million SEK |
| Saving forecast: | 48% (approx 3 750 MWh/year) |
The Strömstad Shopping center/Newsec, Strömstad (EEF)
The Strömstad Gallery, via Newsec, wanted us to optimize the energy consumption and solve a part of the climate problems in the facility. They wanted us to clarify as how real estate technology can be utilized in the best way possible.
Follow-up work is still in progress with the contractor PEAB and several other subcontractors.
The project was right up our alley in terms and after an initial inspection, we offered to work on the project with a budget of 100,000 SEK.
After we mapped the ventilation system and studied the temperature distribution and flows, we suggested a list of improvements that had to be implemented immediately. We promised a savings of 50,000 kWh in the month of Mars and we kept our promise.
We have drastically improved the working conditions for the restaurant personnel on floor 2. On the 1st floor, we have increased the average temperature by 1,5 degrees.
We have not renovated any of the technical installations, but we have just optimized the building control system and the ventilation flows in the facility. All our improvements have been documented.
Our collaboration with Newsec continues to this day…
Ögärdesvägen/Klövern, Gothenburg (EEF)
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“SO FAR WE HAVE EXCEEDED OUR EXPECTATIONS BY 94% “
Description
In 2013, we took up a project which required us to holistically approach the energy consumption in a newly acquired facility from KLÖVERN. A malfunctioning old cooling machine! After a Pre-study with calculations and a jointly prepared workplan, we sat down to work…
- Re-dimensioning, Unloading, and Renovation of the ventilation channels.
- Two new Air Handling Units (AHU)
- New operating conditions adjusted to humidity, internal gains and change in season. These conditions were unfamiliar even to the trained eyes like the AHU manufacturers.
- Fine tuning of both ventilation and radiator circuits.
- Change in the dimensioning of pumps
- Review of temperature regulation in the rooms
- New cooling machine that switches to a heat pump in the winter
- Follow-up of the building’s operation for 2 years!
Facts
| Customer: | Klövern Göteborg |
| Start of rebuild: | 2014 |
| Final inspection: | 2015 |
| Follow-up: | Calibration and Optimization until Oct 2017 |
| Investment: | 3,6 Million SEK |
| Savings forecast: | 35% |
| Savings achieved: | 68% |
Lendahlsskolan/FABS, Alingsås (EEF)
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“RESULT ORIENTED TENDER PROCUREMENT”
Our second project based on a public tender procurement and a form of “RESULT ORIENTED TENDER PROCUREMENT”.
Translated excerpt from the tender procurement:
“We intend to procure services where we give the tenderers more competence than just working in the least possible time and the least possible cost. Through this approach, we provide tenderers with an opportunity to be creative, to stand for their proposed solutions, and to take responsibility for achieving our required results.”
We worked out a new ventilation solution, won the tender and completed the contract during the summer of 2018. Now we look forward to fulfilling our promises.
More facts will be furnished on availability.
Facts
| Customer: | FABS Alingsås |
| Start of rebuild: | June 2018 |
| Final inspection: | Oct 2018 |
| Follow-up: | 2 years |
| Investment: | approx, 4.5 million SEK |
| Savings forecast: | 300 MWh in the next two years |
| Savings achieved: | Ongoing |
N Ågatan 32, Mölndal / Klövern, Gothenburg (EEF)
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After a ”lite” version of our pre-study, Klövern showed the green flag and the work in ongoing now.
A few of our improvements are:
- Replace two old AHUs with a new unit
- Old cooling machines replaced by a machine that works both as a cooling machine and a heat pump.
- Upgrade an AHU with new fans
- Pressure relief of the air channels
- New air projections
- Sectioning of supply areas and balancing of supply and extract air
- New operative conditions for the AHUs including other improvements such as night heating through the heat pumps.
Facts
| Customer: | Klövern Gothenburg |
| Start of rebuild: | Spring 2018 |
| Final inspection: | Not confirmed yet |
| Follow-up: | 2 years |
| Investment: | approx, 2.4 million SEK |
| Savings forecast: | 47% (280 MWh/year) |
| Savings achieved: | Ongoing |
Von Utfallsgatan, Sävenäs / Klövern, Gothenburg (EEF)
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After a ”lite” version of our pre-study, Klövern showed the green flag and the work in ongoing now.
A few of our improvements are:
- Replace two old AHUs with a new unit
- Old cooling machines replaced by a machine that works both as a cooling machine and a heat pump.
- Upgrade an AHU with new fans
- Pressure relief of the air channels
- New air projections
- Sectioning of supply areas and balancing of supply and extract air
- New operative conditions for the AHUs including other improvements such as night heating through the heat pumps.
- Solar films for windows in a few offices
Facts
| Customer: | Klövern Gothenburg |
| Start of rebuild: | Spring 2018 |
| Final inspection: | Not confirmed yet |
| Follow-up: | 2 years |
| Investment: | approx, 1.4 million SEK |
| Savings forecast: | 42% (165 MWh/year) |
| Savings achieved: | Ongoing |
ICA Uddevalla / Kungsleden, Gothenburg (EEF)
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“THE PROJECT OVERREACHED EXPECTATIONS BY 3%”
The objective was to upgrade the ventilation for a maximum of 500 000 SEK without any other requirements.
Our counterproposal was that we would not work with a sum lower than 750 000 SEK. In return, we offered a guarantee for energy savings of 100 MWh/year and a suggestion of how the tenant can finance the extra cost of 250 000 SEK through a fixed term rent increase of 10 000 SEK/month for 2,5 years, as the energy bills would decrease by the same amount for 2,5 years. Here are the results for the stakeholders:
Kungsleden:
- Now owns a facility 750 000 SEK of which they have only paid 500 000.
- A permanent change in consumption of 100 000 SEK/year which equates to a value increase of 500 000 – 1 000 000 SEK
Tenants:
- 120 kWh/year in reduced operation costs
- Uniform/ better indoor climate without a stop of operations
Consat:
- We are self-fulfilled by our work…
- Our customers give us new projects and continue the trust…
- We grow by 10% a year…
Facts
| Customer: | Kungsleden Gothenburg |
| Start of rebuild: | Summer 2014 |
| Final inspection: | August 2014 |
| Follow-up: | 2.5 years (completed on 1 Feb 2017) |
| Investment: | approx, 750 000 SEK |
| Savings forecast: | YES! 260 MWh savings in 2,5 years |
| Savings achieved: | As on 2017-02-01, 268 MWh |
Alströmergymnasiet / FABS, Alingsås (EEF)
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“As of now, we have overreached by 26%”
Our first project based on a public procurement and of the form “RESULT-ORIENTED PROCUREMENT”.
Requirements:
- Solve a problem in the kitchen and the service hall.
- ABT 06 (General provisions for contracts related to construction-, civil engineering- and installation work)
- Guarantee a minimum of 150 MWh/year in energy savings. Additional savings gives more points to the tender.
- Use only proven brands.
We won the auction and completed the contract under the summer of 2016. After only half a year we were ahead of our forecast. Despite this, we were actively working with the project to increase our savings margin.
Facts
| Customer: | FABS Alingsås |
| Start of rebuild: | May 2016 |
| Final inspection: | Sept 2016 |
| Follow-up: | Until Sept 2018 |
| Investment: | approx, 3.1 Million SEK |
| Savings forecast: | YES! (590 MWh in the last 2,5 years) |
| Savings achieved: | Forecast as on 01-01-2017 – 625 MWh in the last 2,5 years |
Stadspark bathhouse Borås/AJ VVS konsult i Borås AB (VVX)
Stadspark bathhouse in Borås underwent major renovations in 2017 and 2018. Consat supplied the Geiser™ M for a central heat recovery of the shower water.
Investment: 307 000 SEK
Energy savings forecast: 136 200 kWh/year i.e., 11 350 kWh/month
<Temperatures relate to another project but the technical principle solution is the same.
The image of the heat exchanger is > a four-pipe solution. Dimensioning for this project was 2×8 tubes.
Valhalla bathhouse/GotEvent AB, Gothenburg (VVX)
The Valhalla bathhouse with approximately 500 000 visitors/year is changing the heat recovery solution for its shower water.
The peripheral requirements of GotEvent for the new installation were:
- Energy shall be recovered directly to the tap hot-water system for the shower facilities
- Simple solution without a heat pump for increased operational reliability and prevention of refrigerant handling.
- Guarantee of promised savings
Consat’s big was accepted and we supplied the Geiser™ M heat exchanger during the summer of 2018.
Investment: 445 000 SEK
Forecast of energy savings: 380 000 kWh/year i.e., 31 666 kWh/month
<Temperatures relate to another project but the technical principle solution is the same.
The image of the heat exchanger is > a four-pipe solution. Dimensioning for this project was 2×10 tubes.
Nolhagahallen/Widells Rör & Konsult AB, Alingsås (VVX)
Nolhaga swimming and sports facility opened in Alingsås during February of 2019.
Consat’s bid was accepted and vi supplied three units of Geiser™ M to the facility.
<Temperatures relate to another project but the technical principle solution is the same.
The image of the heat exchanger is > a four-pipe solution. Dimensioning for this project was 2×8 , 1×4 tubes.
Kronobergsbadet / Specialfastigheter, Stockholm (VVX)
“AS OF NOW WE HAVE OVERREACHED BY 40,5%”
Geiser™ M:
A central heat recovery for the shower water was installed in the Kronoberg bathhouse. The heat recovery takes place in a separate sewage pipe. The sewage was separated so that heat could be recovered from the shower water. The recovered heat preheats the main hot-water supply.
Investment: 285 000 SEK
Forecast of energy savings: 54 000 kWh/year i.e., 4 500 kWh/month.
Payoff time: 5,3 years
 |
If the current savings’ rate continues, the payoff time would be 3,7 years instead of the calculated 5,3 years at the start of the project.
Current savings/month: approximately 6 326,5 kWh/month i.e., 40% higher savings than promised.
Payoff time: 3,7 years.
Trelleborg bathhouse/Trelleborg municilpality (VVX)
Geiser™ M with accumulated graywater
The installation replaced a dysfunctional heat exchanger in 2014. Unfortunately, we do not have feedback from the municipality and hence cannot report the volume of energy saving.
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Dragspelsgatan Frölunda/Bostadsbolaget, Gothenburg (VVX)
Geiser™ S in a cassette-solution:
When it was the time for a sewage renovation in approximately 880 apartments, our solution was installed in every bathroom. A local and direct heat recovery where the graywater from the shower flows through a heat exchanger placed on the floor below and heats up the incoming cold water.
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Contact
Ian Hostetter
CEO Consat SES AB
P: +46 31 - 385 03 60
Andreas Björkroth
Energy System Consultant
P: +46 31 - 385 02 74
Lars Olof Lindeheden
COO Consat SES Göteborg
P: +46 31 - 340 00 13
Alexander Sandgren
ENERGY SYSTEM CONSULTANT
P: +46 31 - 385 02 37
Patrik Bengtsson
Energy System Engineer
P: +46 08 - 562 605 28
Dilip Kumar Vellore Saikumar
Energy System Engineer
P: +46 08 - 562 605 29
Anna Elofsson
Time off to study
P: