"कम्प्रेसर" का संशोधनहरू बिचको अन्तर
| पङ्क्ति २०: | पङ्क्ति २०: | ||
Many large [[snowmaking]] operations (like [[ski resorts]]) use this type of compressor. They are also used in internal combustion engines as [[Supercharger|superchargers]] and [[Turbocharger|turbochargers]]. Centrifugal compressors are used in small [[gas turbine]] [[Engine|engines]] or as the final compression stage of medium-sized gas turbines. |
Many large [[snowmaking]] operations (like [[ski resorts]]) use this type of compressor. They are also used in internal combustion engines as [[Supercharger|superchargers]] and [[Turbocharger|turbochargers]]. Centrifugal compressors are used in small [[gas turbine]] [[Engine|engines]] or as the final compression stage of medium-sized gas turbines. |
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Centrifugal compressors are the largest available compressors, offer higher efficiencies under partial loads, may be oil-free when using air or magnetic bearings which increases the heat transfer coefficient in evaporators and condensers, weigh up to 90% less and occupy 50% less space than reciprocating compressors, are reliable and cost less to maintain since less components are exposed to wear, and only generate minimal vibration. But, their initial cost is higher, require highly precise [[CNC]] machining, the impeller needs to rotate at high speeds making small compressors impractical, and surging becomes more likely.<ref name="autogenerated1" /> Surging is gas flow reversal, meaning that the gas goes from the discharge to the suction side, which can cause serious damage, specially in the compressor bearings and its drive shaft. It is caused by a pressure on the discharge side that is higher than the output pressure of the compressor. This can cause gases to flow back and forth between the compressor and whatever is connected to its discharge line, causing oscillations.<ref name="autogenerated1" /> |
Centrifugal compressors are the largest available compressors, offer higher efficiencies under partial loads, may be oil-free when using air or magnetic bearings which increases the heat transfer coefficient in evaporators and condensers, weigh up to 90% less and occupy 50% less space than reciprocating compressors, are reliable and cost less to maintain since less components are exposed to wear, and only generate minimal vibration. But, their initial cost is higher, require highly precise [[CNC]] machining, the impeller needs to rotate at high speeds making small compressors impractical, and surging becomes more likely.<ref name="autogenerated1" /> Surging is gas flow reversal, meaning that the gas goes from the discharge to the suction side, which can cause serious damage, specially in the compressor bearings and its drive shaft. It is caused by a pressure on the discharge side that is higher than the output pressure of the compressor. This can cause gases to flow back and forth between the compressor and whatever is connected to its discharge line, causing oscillations.<ref name="autogenerated1">{{Cite web |title=Ref Doc |url=https://download.schneider-electric.com/files?p_Doc_Ref=SPD_VAVR-AE7T7G_EN |website=download.schneider-electric.com}}</ref> |
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==== एक्सिएल कम्प्रेसर ==== |
==== एक्सिएल कम्प्रेसर ==== |
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१३:५६, १ जनवरी २०२५ जस्तै गरी पुनरावलोकन
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ग्यास कम्प्रेसर एक मेकानिकल उपकरण हो जसले ग्यासको आयतन घटाएर चाप बढाउँछ।
कम्प्रेसर र पम्पमा समानताहरू छन् - दुवैले तरलको दबाब बढाउँछन् र दुवैले पाइप मार्फत तरल आपुर्ति गर्न सकिन्छ। ग्यासहरू कम्प्रेसिबल (compressible) भएकाले, ग्यास कम्प्रेसरले ग्यासको भोल्युम पनि घटाउँछ, जबकि तरल पदार्थहरू तुलनात्मक रूपमा कम संकुचित हुने भएकाले, पम्पहरूले तरलको मात्रा एकदमै थोरै परिवर्तन गर्न सक्षम हुन्छन्। (अर्थात, पम्पको मुख्य कार्य दबाव बढाउनु हो, आयतन घटाउनु होइन)
कम्प्रेसरको प्रकार
कम्प्रेसरहरूको मुख्य प्रकारहरू तल दिइएका छन्-
डाइनामिक
सेन्ट्रिफ्युजल कम्प्रेसर
सेन्ट्रिफ्युजल कम्प्रेसर use a rotating disk or impeller in a shaped housing to force the gas to the rim of the impeller, increasing the velocity of the gas. A diffuser (divergent duct) section converts the velocity energy to pressure energy. They are primarily used for continuous, stationary service in industries such as oil refineries, chemical and petrochemical plants and natural gas processing plants.[१][२][३] Their application can be from १०० अश्वशक्ति (७५ किलोवॉट) to thousands of horsepower. With multiple staging, they can achieve high output pressures greater than १,००० पाउन्ड/वर्ग इन्च (६.९ मेगापास्कल).
This type of compressor, along with screw compressors, are extensively used in large refrigeration and air conditioning systems. Magnetic bearing (magnetically levitated) and air bearing centrifugal compressors exist.
Many large snowmaking operations (like ski resorts) use this type of compressor. They are also used in internal combustion engines as superchargers and turbochargers. Centrifugal compressors are used in small gas turbine engines or as the final compression stage of medium-sized gas turbines.
Centrifugal compressors are the largest available compressors, offer higher efficiencies under partial loads, may be oil-free when using air or magnetic bearings which increases the heat transfer coefficient in evaporators and condensers, weigh up to 90% less and occupy 50% less space than reciprocating compressors, are reliable and cost less to maintain since less components are exposed to wear, and only generate minimal vibration. But, their initial cost is higher, require highly precise CNC machining, the impeller needs to rotate at high speeds making small compressors impractical, and surging becomes more likely.[४] Surging is gas flow reversal, meaning that the gas goes from the discharge to the suction side, which can cause serious damage, specially in the compressor bearings and its drive shaft. It is caused by a pressure on the discharge side that is higher than the output pressure of the compressor. This can cause gases to flow back and forth between the compressor and whatever is connected to its discharge line, causing oscillations.[४]
एक्सिएल कम्प्रेसर
उपयोग
- शुद्ध प्राकृतिक ग्यास पाइपलाइन द्वारा ढुवानी गर्न
- फ्रिज र वातानुकूलित उपकरणहरूमा
- ग्यास टर्बाइनहरूमा - प्रवेश गर्ने ग्यासलाई कम्प्रेस गरी टर्बाइन भित्र प्रवेश गराइन्छ ।
- शुद्ध वा उत्पादित ग्यासहरू भण्डारण गर्न
- सबै प्रकारका न्युमेटिक उपकरणहरूको लागि
- पनडुब्बीहरूमा - हावा संकुचित र पछि प्रयोगको लागि भण्डारण गरिन्छ।
- ↑ Perry, R.H.; Green, D.W., सम्पादकहरू (२००७), Perry's Chemical Engineers' Handbook (8th संस्करण), McGraw Hill, आइएसबिएन 978-0-07-142294-9।
- ↑ Dixon S.L. (१९७८), Fluid Mechanics, Thermodynamics of Turbomachinery (Third संस्करण), Pergamon Press, आइएसबिएन 0-08-022722-8।
- ↑ Aungier, Ronald H. (२०००), Centrifugal Compressors A Strategy for Aerodynamic design and Analysis, ASME Press, आइएसबिएन 0-7918-0093-8।
- ↑ ४.० ४.१ "Ref Doc", download.schneider-electric.com।