Technology ElectraTherm

ORC POWER+ 4400B, 4400B+, 6500B, 6500B+

The Power+ units are able to use heat sources from 70 ° C and generate up to 125 kWe.

The Power+ generator using organic Rankine cycle together with patented technologies -
double helix, converts sources of low-temperature heat and waste heat into electricity
without additional fuel consumption or emissions. Heat sources with a higher temperature higher than 150 ° C - for example thermal oils and exhaust gases can be used with the use of an additional heat exchanger.

Technologie Power+ PM75

Bitzer expander, double helix patent

Technology SMART POWER ORC

Thanks to the integration of the BITZER semi-hermetic expander, ElectraTherm's ORC solutions represent a dramatic shift away from turbine technologies. The expander not only provides a more cost-effective and robust design that significantly increases reliability, but also has much lower operating speeds that allow for "wet" two-phase flow.

As a result, the expander is better equipped for transient operation, which allows the system to reliably generate energy from heat sources with temperature and flow fluctuations. ORC systems from ElectraTherm based expander are more ideal for variable heat sources with lower temperature compared to turbine based systems.

The new expander from the parent company ElectraTherm - BITZER ensures smooth operation and absolute reliability.

POWER+ 4400B / 4400B+ is a smaller series ideal for heat output up to 1450 kWth. Generates up to 75 kWe.

POWER+ 6500 / 6500B+ - is a larger range ideal for heat output up to 2,200 kWth. Generates up to 125 kWe.

Capacity parameters

			4400B	4400B+	6500B	6500B+
device capacity	output power	kWe	až do 75	až do 75	až do 125	až do 125
heat source conditions	thermal input	kWth	380 - 1050	380 - 1450	400 - 1700	400 - 2200
	hot water temperature	°C	70 - 116	70 - 150	70 - 132	70 - 150
	hot water flow rate	l/s	3 - 15	3 - 15	3 - 25	3 - 25
condensing conditions	heat rejected	kWth	380 - 980	380 - 1365	400 - 1600	400 - 2000
	cold water temperature	°C	4 - 65	4 - 65	4 - 65	4 - 65
	cold water flow rate	l/s	6 - 18	6 - 18	9 - 26	9- 26

* Heat sources with a temperature higher than 150 ° C - such as thermal oils and exhaust gases - can be used using another heat exchanger.

Process

Heat enters the evaporator and heats ORC operating fluid (refrigerant) to the boiling point and thus it is converted into steam.
The hot steam creates pressure.
The steam is forced through the screw expander and spins an electric generator.
Steam is cooled with a source of cold water and condenses back to liquid form in the condenser.
Operating fluid is pumped to a higher pressure, it returns back into the evaporator and the process repeats.

Technical specifications

	Construction
	Installing refrigerant	built according to standards ASME and CE
	Energy block	patented twin screw expander
	Generator	asynchronous
	Heat exchanger	compact, brazed board construction
	Lifespan	20 years

	System description
	Operating fluid	pentafluoropropane (nonflammable, nontoxic, not harming the ozone layer)
	Heat source	hot water from 70°C to 150°C flue gas from 150 °C
	Cooling requirements	water temperature 4°C to 65°C
	Control	common management software / standard programable logic controller
	Remote monitoring	internet
	Operation	designed for unattended operation
	Sound pressure level	80 db at 1 m; optional silence; <72 db at 1 m