High efficiency (over 90%), low noise level, compact device and simple use and maintenance are the main characteristics of this new micro-cogeneration device called “Ekowatt”.
It can be used as a monovalent room heating system, however, it is more commonly used in a bivalent system which, besides room heating, also provides hot domestic water.
– Natural gas or LPG (liquefied petroleum gas)
– High thermal efficiency
– Clean exhaust
– Diesel fuel
– For structures with no natural gas infrastructure
– High electrical efficiency
- 4-stroke water-cooled internal combustion gas engine
- Three-phase asynchronous generator
- Exhaust gas heat exchanger
- Sound-insulated housing
Cogeneration is joint production of electric (and/or mechanic) energy and useful heat energy in a single process from the same source of primary energy. It comprises several technologies, however, it always includes an electricity generator and a heat recuperation system. Cogeneration is significantly more efficient in turning primary energy into electric energy and useful heat energy than separate production of electric energy and useful heat.
By-product of cogeneration devices intended to heat buildings is electricity which the state buys on the basis of the Decree on support of electricity generated from high-efficiency cogeneration of heat and electricity published in the Official Gazette of the Republic of Slovenia No. 37/2009.
Benefits of cogeneration are important for every state, since cogeneration of heat and electric energy significantly lowers consumption of fuel (approx. for 1/3) compared to thermal power stations. CO2 emissions are lower and the overall energy efficiency is higher. Large devices have been used in practice for a while, however, micro-cogeneration devices (up to 50kW), which are also intended for households and small business units, are becoming increasingly popular.
Cogeneration of electric and heat energy represents a great opportunity for entrepreneurs who are already making good use of it abroad. Not only for the production for their own needs, but also for the production for other consumers. In foreign countries, companies are building cogeneration facilities and later sell energy to other companies, hospitals and consumers.
Before investing, it is important that the investor produces energy for a known consumer or that it has a contract concluded with a consumer of this energy. Depending on the type of the cogeneration device and the fuel it uses, it takes approx. 2-5 years to recover the investment. Potentials lie in paper industry, petro chemistry, car, food, textile and wood industry, production of ceramics, brick and clay products. It can also be used in the services sector, especially in hospitals, hotels and sports centres.
A user, who decides to make use of cogeneration, is expected to continue using the same amounts of energy, however, he will achieve economic savings, since higher efficiency results in lower costs of cogeneration compared to conventional technology. Savings depend on the ratio between the price of electric energy and the price of the fuel used in cogeneration. The larger the difference between these prices, the larger the savings and the shorter investment recovery time. In most cases of cogeneration installations, energy savings stand between 20 and 30%.
Most of production processes also require reliable power supply. Cogeneration guarantees reliability and delivers other savings which are more difficult to evaluate in economic terms. Savings can be demonstrated most easily on an example (valid for data from 2014!). If 30,000 m3 of gas is required to heat a building, the costs amount to approx. 16,500 EUR. Cogeneration device would in the same case generate 75,000 kWh of electric energy for which the state would pay approx. 17,500 EUR. This actually means that the building would be heated for free.
For installation of a modern high efficiency micro-cogeneration device with the rated power of up to 50 kW, investors are eligible to receive favourable loans by the Eco fund.
| Power | 5,5 | kW |
| Heat output | 13 | kW |
| Fuel consumption | 1,9 | m3/h |
| El. efficiency | 27 | % |
| Total efficiency | >90 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 70 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 900x1100x1200 | mm |
| Connection dimensions | 1” | |
| Weight | 380 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 16A | A |
| Power | 8,5 | kW |
| Heat output | 18 | kW |
| Fuel consumption | 2,8 | m3/h |
| El. efficiency | 30 | % |
| Total efficiency | >90 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 900x1000x1200 | mm |
| Connection dimensions | 1” | |
| Weight | 460 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 25A | A |
| Power | 18 | kW |
| Heat output | 36 | kW |
| Fuel consumption | 5,7 | m3/h |
| El. efficiency | 31 | % |
| Total efficiency | >90 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 1000x1200x1500 | mm |
| Connection dimensions | 5/4” | |
| Weight | 670 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 50A | A |
| Power | 30 | kW |
| Heat output | 59 | kW |
| Fuel consumption | 9,3 | m3/h |
| El. efficiency | 32 | % |
| Total efficiency | >90 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 1100x1300x1800 | mm |
| Connection dimensions | 6/4” | |
| Weight | 950 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 80A | A |
| Power | 7,0 | kW |
| Heat output | 13 | kW |
| Heat output of fuel | 22 | kW |
| Fuel consumption | 2,2 | l/h |
| El. efficiency | 31 | % |
| Total efficiency | >85 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 70 | °C |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 850x950x1000 | mm |
| Connection dimensions – heating | 3/4” | |
| Connection dimensions – fuel | 10 | mm |
| Nominal water flow | 1,2 | m3/h |
| Weight | 380 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 3x11A | A |
| Power cable | 5×4,0 | mm2 |
| Electrical protection | 3xD20A (25 A) | A |
| Power | 15 | kW |
| Heat output | 26 | kW |
| Heat output of fuel | 45 | kW |
| Fuel consumption | 4,5 | l/h |
| El. efficiency | 333 | % |
| Total efficiency | >85 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 70 | °C |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 900x1150x1400 | mm |
| Connection dimensions – heating | 1” | |
| Connection dimensions – fuel | 12 | mm |
| Nominal water flow | 2,5 | m3/h |
| Weight | 650 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 3x23A | A |
| Power cable | 5×6,0 | mm2 |
| Electrical protection | 3xD32A (50A) | A |
| Power | 22 | kW |
| Heat output | 36 | kW |
| Heat output of fuel | 65 | kW |
| Fuel consumption | 6,5 | l/h |
| El. efficiency | 34 | % |
| Total efficiency | >85 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 70 | °C |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 900x1150x1400 | mm |
| Connection dimensions – heating | 1” | |
| Connection dimensions – fuel | 12 | mm |
| Nominal water flow | 3,7 | m3/h |
| Weight | 800 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 3x34A | A |
| Power cable | 5×10,0 | mm2 |
| Electrical protection | 3xD50A (63A) | A |
| Power | 30 | kW |
| Heat output | 54 | kW |
| Heat output of fuel | 93 | kW |
| Fuel consumption | 9,3 | l/h |
| El. efficiency | 32 | % |
| Total efficiency | >85 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 70 | °C |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 1000x1250x1700 | mm |
| Connection dimensions – heating | 5/4” | |
| Connection dimensions – fuel | 15 | mm |
| Nominal water flow | 5 | m3/h |
| Weight | 980 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 3x47A | A |
| Power cable | 5×16 | mm2 |
| Electrical protection | 3xD63A (80A) | A |
| Power | 45 | kW |
| Heat output | 70 | kW |
| Heat output of fuel | 133 | kW |
| Fuel consumption | 13,3 | l/h |
| El. efficiency | 34 | % |
| Total efficiency | >85 | % |
| rpm | 1500 | 1/min |
| Max. water temp. | 70 | °C |
| Max. water temp. | 80 | °C |
| Max. water press. | 3 | Bar |
| Dimensions (WxHxL) | 1000x1250x1700 | mm |
| Connection dimensions – heating | 5/4” | |
| Connection dimensions – fuel | 15 | mm |
| Nominal water flow | 8 | m3/h |
| Weight | 1100 | kg |
| Power supply connection | 400/50 | V/Hz |
| Supply power | 3x78A | A |
| Power cable | 5×35 | mm2 |
| Electrical protection | 3xD63A (80A) | A |
