Lets talk for business a good heat exchanger. Due to high energy costs and increasing environmental awareness, companies are forced to optimize their processes and  use their resources more economically and efficiently.

From an economic point of view, the application of heat recovery makes sense. All by using process heat. It really is becoming more attractive. Now, AERZEN offers innovative solution concepts. All in order to reduce energy costs on a sustained basis. Savings of more than 90% are easily possible!

As I’ve written before,

Imagine living in one of the greenest communities in the United States. I mean with home utility bills upwards of 70 percent less than traditional homes.

Living in this futuristic green community means:

1. Geothermal loops that heat and cool every home using the earth’s own energy

  1. Bosch Tankless Water Heaters that use up to 50 percent less energy than standard home water heating systems
  2. Geothermal technology make these homes over three times more efficient than required for ENERGY STAR certification

Decreasing fossil sources of energy and increasing energy consumption requires more investments. Especially in technologies for renewable energies. For example, wind, sun, tidal, energy storage geothermal energy and biologically renewable resources. They also entail growth of future strategic markets. I mean especially in case of process air generation.

Energy savings are very important. For as the lion’s share of the life-cycle costs is the consumption of electrical energy. Heat generates for thermo-dynamical reasons. Especially in case of compressed air applications. Electrical energy of the drive power converts into heat. This heat arises as waste heat. All from the motor, compressor and silencer. But it is also generates when process gas temperature increases. However, in many cases the heat is lost and not used.

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In principle, there are two possibilities of heat recovery. Especially upon operation of positive displacement blowers. As well as, screw and rotary lobe compressors or turbo machines.

Cooling air for space heating

The cooling air for the stage, silencer and the piping. This is under the acoustic hood as well as the exhaust air of the oil cooler. For it can be for space heating. Exhaust air channels of the packaged unit bundle waste heat (30° C to 60° C). Subsequently, the air conveys as heating air. Especially for places where heat is needed.

A temperature-controlled outlet ensures a controlled ambient temperature. Depending on the heating period, excess air releases to the outside. All via an exhaust air channel.

Application of heat exchangers

Another possibility of heat recovery is to benefit from the stored energy. I mean that of the compressed medium by the application of a heat exchanger. The advantage is that the heat is taken from the place where it’s generated. Energy losses only arise on the way to the end user. In case of this operating principle, the heated medium passes a heat exchanger that heats the water flowing through. All to target temperature (only applies to wastewater treatment plant technologies). In addition or when it cools the gas down to 50 °C and below (only applies to pneumatics).

However, both possibilities require engineering with optimized heat transfer.

Consequently, the heated amount of water and its temperature.

For they all depend on the following things. I mean throughput speed of medium in the heat exchanger. Also the pipe bundle length and pipe surface. Finally used materials as well as size of heat exchanger.

Finally it’s also depending on the design of the heat exchanger. Because the heated water can be used as process water. Also with this method of heat recovery, the hot water is fed to a large extent into the heating system. In this way, more than 85% of the heat energy will be recovered.

The generation of process air is energy-efficient and cost saving. However, many plant operators seldom recognize these potential savings. Thanks to low investment costs. Also expenditures for installation or integration in the company’s process cycle pay off. I mean after only a few months.

In conclusion and as application specialist, AERZEN offers a pinpoint design of heat exchangers. A design with maximum amount of heat transmitted and at lowest possible pressure loss. Even older compressed-air systems can be energetically optimized and retrofitted. Another advantage: AERZEN offers everything from one source.

Source: PresseBox)