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Kaishan Company supplies screw expander power generation equipment for Turkey geothermal field

2017/04/22 publish by Kaishan compressor

Recently Zhejiang Kaishan Compressor Co., Ltd. (Kaishan Stock) signed an agreement with a Turkey owner to supply screw expander power generation equipment.

The non-condensable gas produced during the production process of the owner’s geothermal field located in Manisa il province, Turkey is unable to be used economically or efficiently without the suitable equipment either due to the high construction cost of the current non-condensable gas utilization program or because of low utilization efficiency, causing a serious resource waste. The supply of Kaishan’s screw expander power generation equipment well solves the problem of the non-condensable gas not being able to be utilized.  

The direct expansion steam expander power generation unit independently developed by Kaishan can directly use the steam and non-condensable gas in the geothermal field to generate electricity, turning wasted energy into useful energy and increasing the overall energy utilization efficiency.

It has been learned that a characteristic of the heat source parameters is that the steam contains a large amount of non-condensable gas, 99% of which is CO2. Knowing that, Kaishan has allocated the model KSGe745, the installed capacity of which is 2400kW. The unit can achieve a net power of 1970kW under design working condition, which means the annual net power generated will be 15.76 million KWHS assuming 8000 operation hours a year.

One of the characteristics of the equipment is that it can directly use the non-condensable steam to generate electricity, avoiding unnecessary waste of steam, and increasing the overall utilization efficiency of the geothermal field. The unit has a wonderful ability to adapt to changing working conditions to accommodate the fact the the contents and flow rate of the non-condensable steam change with time. With a high adaptation ability, Kaishan’s equipment can maintain high isentropic efficiency regardless of the changed contents and flow rate. The non-condensabe steam has complex contents and may contain a slight amount of corrosive contents, so in order to protect the equipment from harmful effects, Kaishan unit’s protective measures include using stainless steel rotors and casing, using carbon ring for sealing between bearing and the rotor chamber, and using sealing gas for insulation.

Kaishan’s flexible, reliable and highly efficient non-condensable steam expander power generator is a perfect solution for re-using wasted geothermal energy. This is another case of Kaishan successfully entering into overseas geothermal market.
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