OUR PURPOSE

INTEGRAL Energietechnik GmbH (INTEGRAL "Energy Technology Ltd.") is concerned exclusively with industrial and commercial processes which are environmentally friendly and compatible or, at the very least, benign and which provide clients with the security of long term energy savings potential, and ecological soundness.

This is our credo:

INTEGRAL is committed to research and development to achieve its goals. National and international cooperation ensures that we keep abreast of the latest scientific and technological advances.

INTEGRAL´s ownership and its independence ensure that outside influences are excluded. The company is able to remain objective and to propose technical solutions which suit the customer's best interest's.

INTEGRAL are experts in refrigeration, energy conversion and sustainable technologies in various applications. The company is first and foremost a main contractor with its own design, project management, construction, site supervision, commissioning and warranty capability. INTEGRAL is also a supplier of components for unitary systems and complete plants.

The aim of INTEGRAL is to be active in the area of sustainable technologies and processes for ENVIRONMENT and ENERGY. The name "INTEGRAL" points to an important element of the company´s intention: to develop and supply "integrated" systems that are complete and comprehensive engineering and technological solutions to meet the challenges presented by environmental issues and energy demand.

The original INTEGRAL Technologie GmbH was founded in 1988. The present INTEGRAL Energietechnik GmbH with a share capital of 750.000,- DM commenced activities in April 1995

The staff of INTEGRAL comprises engineers, scientists, and commercial specialists with a wide range of international experience. INTEGRAL carries out its own research and development and has co-operation agreements with leading experts and research institutes. This has led to the acquisition of a number of patents, copyrights and trade marks.

INTEGRAL's headquarters are in Flensburg, Germany's most Northern city and located at the Danish border.

The Flensburg area is known as a previous main settlement of the Vikings and is located between two seas: The North Sea and the Baltic Sea.

The nearest international air-ports are Hamburg/Germany HAM (150 km) and Billund/Denmark BLL (125 km). There is a highway connection from either airport and a regular train service from Hamburg.

Managing Director: Dr.-Ing. Joachim Paul, Flensburg

Authorized Officer: Dipl.-Ing. Ernst Jahn, Flensburg

International recognition confirmed in premium awards from professional institutions and societies have been received, among others the "Hall Thermotank Gold Medal" from "The Institute of Refrigeration" in the UK.

INTEGRAL is active in the following technology fields and resulting applications:

"WATER AS REFRIGERANT" - A NEW AGE IN REFRIGERATION HAS BEGUN

"Water", along with air, hydrocarbons, ammonia and carbon dioxide is the most environmentally benign refrigerant, completely safe (incombustible, non toxic) and generally most suitable for refrigeration technology.

Refrigeration plants operated with water are not sensitive to contamination, have a constant efficiency and can be operated as chillers down to 0.5°C or as heat pumps. The production of ice is also possible.

"Water as Refrigerant" is the ultimate solution to refrigeration. Together with complete environmental friendliness (no ozone depletion, no global warming) comes a superior COP (coefficient of performance), unmatched by any of the "classic" systems.


2.000 tons Ice/Day Plant with "Water as Refrigerant" for Mine Cooling in Botswana (7 MW Ref. Capacity)

Refrigeration plants with "Water as Refrigerant" can be operated using electricity (ECOCHILLER, ECO-VIM) as well as (waste) heat or (waste) steam (ECOJET). Plants using this "state of the art" technology are already in service throughout the world. Plants with capacities from approx. 150 kW up to some 3.000 kW refrigeration capacity per unit are available. The newly developed water vapour compressor INTEGRAL TM is the key to accomodate space restrictions, and at the same time is competitively priced.

Such refrigerating systems are simple, robust and well suited to supply cooling for buildings, thermal energy storage systems, mine-, tunnel- and district cooling as well as industrial applications including food, fish and meat industries etc.. Where a chiller is an option, "Water as Refrigerant" can do the same job only better. The water quality is of no importance since "empty" vessels are used.

WATER AS SECONDARY REFRIGERANT - BINARY ICE TECHNOLOGY

Binary Ice is a suspension of very small ice crystals in an aquaeous solution. The suspension remains liquid and is therefore pumpable. The energy density of Binary Ice is many times greater than that of cold water or brine. Heat transfer and transport properties are at least equivalent to conventional refrigerants (yesterday´s CFCs, today´s H-CFCs, HFCs and Ammonia). Binary Ice is therefore not just another secondary refrigerant but a special "refrigerant" in a class of its own!

Binary Ice can be generated in two ways: Small and medium capacities with FLO-ICE technology, medium and large capacities with Vacuum Ice technology. The system is shown below:

Binary Ice (FLO-ICE and Vacuum Ice) can be generated, circulated and/or stored in closed systems or can be harvested for direct use. The applications are therefore numerous and can be summarized briefly as follows:

AIR CONDITIONING

Air Conditioning and Space Cooling

Air Dehumidification

Retrofit of Underperforming Plants (Performance, Pipework, Heat Exchangers)

District Cooling, Thermal Energy Storage

COMMERCIAL APPLICATIONS

Supermarkets

Cold Stores, Cold Rooms

FOOD INDUSTRY

Quickcooling of Fruits, Vegetables, Packed Food

Meat processing: Boning Rooms, Poultry, Skins and Hides

Dairy Products, Breweries, Soft Drink Industry, Juice Concentration

Fish Industry (on Board, on Land, Transport) - Ice made e.g. from Sea Water

INDUSTRIAL APPLICATIONS

Cooling of Tools, Jigs

Chemical Processes

Compressed Air

Concrete Cooling (Exothermal Energy)

Mine- and Tunnel-Cooling

ENVIRONMENTAL APPLICATIONS

Replacement of Refrigerants

Desalination of (Sea)Water

Separation of Oil-/Water-Mixtures




Top: FLO-ICE Unit with 25 kW Refrigerating Capacity

Bottom: Ice Concentration Controller ICON Mk. III

FLO-ICE utilizes a scraped surface heat exchanger. The fluid contains a (harmless) additive which makes it possible to produce liquid ice at any temperature between -1 °C and -40 °C. Any common refrigerant may be used including "natural" substances such as ammonia and hydrocarbons. It is also possible to combine a FLO-ICE maker with an absorption unit if heat is available.

VACUUM ICE makes use of "Water as Refrigerant" which is described in more detail above. A very small amount of an additive (in the ppm-range) is needed to keep the Vacuum Ice liquid. Vacuum Ice can be generated with electricity or heat (steam).

Binary Ice can be pumped over long distances and is therefore suitable to provide "district cooling" with a centrally located plant. The energy density enables significant savings to be made in pipe diameters, pumping costs and/or heat exchanger surfaces. Binary Ice is an excellent cold energy storage medium. Installed capacity is also reduced avoiding the use of peak demand electricity and high cooling levels can be achieved economically.

INTEGRAL supplies ice generators, ice plants and complete systems with a wide range of capacities. The presently available range is shown below:

FLO-ICE is a Joint Venture between INTEGRAL Energietechnik GmbH, Flensburg/Germany and Solmecs FLO-ICE Systems Ltd., London/UK and Toronto/Canada. FLO-ICE is licensed to different partners in different countries where local manufacture takes place.

Vacuum Ice is presently marketed through INTEGRAL in close cooperation with business partners and agents accomodating local conditions.

(WASTE) HEAT DRIVEN POWER STATIONS - ORC TECHNOLOGY

The most cost effective solution to utilise low-grade (waste) heat is the direct utilisation in the form of heat. However, in most cases we find that (waste) heat has already been recovered for thermal use. ORC plants allow the conversion of surplus waste heat for the generation of electricity, again using "Water" or other natural working fluids.

Provided that the generation of electricity through (waste) heat recovery allows a high degree of annual utilisation the process will provide an attractively short pay-back period (typical amortisation 2 - 3 years).

Not only waste heat but other low temperature energy sources can be utilised such as solar heat or geo-thermal energy. The lower economical temperature limit is approx. 100 °C - in special cases this can be less.

ORC-technology is the low-temperature equivalent to conventional thermal power plants operating at standard (high temperature) conditions. ORC plants are already in service utilising heat from air compressors, waste heat from incinerator plants and from pressurized hot water sources before being fed to a district heating system. The capacity of ORC modules lies between 25 kWel. - 1.000 kWel. so far. Higher capacities are, however, possible.

(WASTE) HEAT DRIVEN REFRIGERATION SYSTEMS

(Waste) heat can also be used to produce cold energy. This can be done with ECOJET Chillers/Ice Makers or ECOSORB Absorption plants. ECOJET again works with "Water" as the refrigerant, ECOSORB utilises either water or ammonia, depending on the temperature range.

ECOJET refrigeration plants are extremely simple without mechanical components except pumps. Such installations are performing very reliably without need for maintenance or repair over many years. In addition to waste heat, also solar heat or geothermal energy can be used where available.

MISCELLANEOUS

INTEGRAL is also a provider of products and services which complement the main business. Among such complementary systems are computer programs (refrigeration, moist air), technology transfer to licensees and business partners, instrumentation and controls, units to separate water-/oil-mixtures by a patented freezing process, R & D activities for ice, centrifugal water vapour compressors and laboratory facilities. INTEGRAL is also prepared to act as developer and expert group consultant wherever special skills within the field of refrigeration and energy technology are required. (PRO4SE11.DOC)