Heating - Import export

Concepts, heat exchanger for energy recovery Energy dissipation and global warming cause damage to the nature and to the environment and thereby challenge our future. You can do a lot to prevent it. For instance, with innovative concepts and heat exchanger solutions for energy recovery so that water, wastewater, process fluids and exhaust vapours at the source in the building, in the industry, transported in the canalisation to the sewage treatment plan and even in the surface waters can be rendered useful thermally through heat transfer. Apart from the ecological aspects, investments in the realm of renewable energies are economically consequential. With KASAG as your partner for planning, design, engineering, and the construction of heat exchanger plants for energy recovery from waste heat, you are acting in favour of sustainability.

The 100 Cr6 steel rings manufactured by WIB are stabilized after hardening by annealing. As a result of this treatment, they can be used at temperatures of up to 150°C. They have a hardness of 60 to 64 HRC For applications operating at high temperatures or in order to reduce their sensitivity to shock loads, it is necessary to stabilize the rings at higher temperatures after hardening. It should be noted that such a stabilization will slightly reduce the hardness of the rings.

Waste water treatment plants and surface waters have enormous energy potential. A sewage treatment plant, for example with 90 million litres of wastewater daily, reducing the wastewater temperature by using heat exchanger by around 1°C, generates a power of about 4.3 MW. The comparative potential for energy recovery from the surface water is even higher. Environmental aspect Induced by humans, water temperatures of the surface and streams have steadily increased, not least owing to the inflows from sewage water treatment. This has serious consequences on the flora and fauna. If heat is extracted from purified water in the sewage treatment plant or from surface waters and from streams, and water temperature is thereby reduced, this will have a positive effect on the entire ecological system. With KASAG heat exchanger systems, on the one hand, the energy requirement of the sewage treatment plant can be covered and, on the other, buildings in near vicinity can be heated or cooled.

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.

Ohmic heating is a gentle, continuous process for heating of products, especially for products to keep their lumpiness, such as fruits, vegetables, spices, and other foodstuffs. Heating occurs via electricity, whereby the product functions as electrical resistor. Compared to the conventional cooking methods, the product is not heated over a hot surface, but, rather, uniformly over the entire cross-section. Using the hot-cold water systems is greatly beneficial, for generating energy efficiency as well as for enhancing process control with respect to the direct use of steam as heating medium. Especially in horizontal mixing systems, hot-cold water systems offer optimal conditions for realising the highest product quality and for preserving the lumpiness of the products. The automatic snap-closing manway is excellently suited to facilitate the frequent opening and closing processes. Owing to the heat and humidity, it is critical to add the additives in the cooking apparatuses through sta

You state your requirements and send us the material properties. KASAG then configures the thermal and hydraulic calculations for the desired heat exchanger. The realization is implemented according to the available drawings or on the basis of a comprehensive engineering. KASAG offers all processes necessary for that, such as the orbital-welding process for manufacturing heat exchangers. With KASAG, you can be sustainably flexible.