NRJ INGÉNIERIE

The wastewater in the sewers is an ideal source of energy when combined with heat pumps and cooling machines, for heating and cooling of buildings. Per our experience, the minimal requirements for such a plant include: a wastewater flow of approx.. 10 l/s a wastewater temperature level of about 10°C a power requirement from 100kW (for heating and cooling from ca. 50kW). During the course of conveying wastewater to the sewage treatment plant, there are many possibilities for exploiting thermal energy. Wastewater can also be used many times over consecutively as energy source. Despite new inflows, or the confluence into larger canals, but also through heat influx from cooling systems, the change in temperature of the wastewater is mostly marginal. Innovative cities have ready energy guidelines (energy plans), based on which you can orient yourself to find out whether there is a suitable wastewater canal in your near vicinity (maximally approx. at a distance of 200 m).

The use of energy potential at the place of its origin is optimal. Ensuring the heat transfer in the heat exchanger is thereby a vital criterion and requires customized solutions. The torrent of sewage flow in buildings is collected in a containment volume for generating energy using heat exchanger for heating and cooling. No retention volume is necessary for continuous outflows and process heating. This can be applied, for instance, in apartment buildings, residential buildings, communal buildings, hotels, thermal baths, swimming pools as well as in different energy-intensive industries, such as in foodstuffs, chemicals and pharmaceuticals.

ZWP manufactures large gears, sun wheels, sun pinions and gear rings for planetary gears, which are used in wind turbines. We already supply renowned customers from wind power. ZWP is one of Germany’s largest independent contract manufacturers for transmission parts and mechanical engineering. Summary of our production: Internal toothed rings Gears toothed couplings shaft pinions ..and many more Other types of production on request. We manufacture according to customer drawings. We already supply renowned companies and export worldwide. We have our own hardening facility. This saves time and costs in the manufacturing process. References to our customers in the industry on request. We look forward to hearing from you.

The Pritzwalk gear factory produces gears and toothed shafts. Experience since 1969 with location in Brandenburg. We manufacture planetary gears, sun shafts and other geared items on request. Our well-known customers come from the following sectors: railway, wind power, crane manufacture, industrial gears, mining and special machine construction as well as power generation. As one of the largest independent contract manufacturers in Germany, ZWP manufactures extensive gearing articles. Our customers include renowned and well-known companies. References available on request. We manufacture according to customer drawings and have our own hardening shop. This saves time and money in production. There is also cooperation for other hardening processes such as gas nitriding or single-tooth induction hardening with experts in their field or with colleagues. We look forward hearing from you and are happy to support renewable energies.