What is the difference between a fan and a blower as classified by ASME?

08 Apr.,2024

 

Privacy Overview

1.0 Purpose

Power Zone Equipment, Inc. Data Privacy Policy 

The policy set forth below outlines the personal data that Power Zone Equipment may collect, how Power Zone Equipment uses and safeguards that data, and with whom we may share it. This policy is intended to provide notice to individuals regarding personal data in an effort to be compliant with the data privacy laws and regulations of the jurisdictions in which Power Zone Equipment operates.

Power Zone Equipment encourages our employees, independent contractors, customers, suppliers, commercial visitors, business associates, and other interested parties to read this policy. By using our website or submitting personal data to Power Zone Equipment by any other means, you acknowledge that you understand and agree to be bound by this policy, and agree that Power Zone Equipment may collect, process, transfer, use and disclose your personal data as described in this policy.

2.0 Personal Data

Power Zone Equipment is committed to maintaining all reasonable precautions to ensure the privacy and security of personal data gathered by Power Zone Equipment. During your use of our website or through other communications with Power Zone Equipment, personal data may be collected and processed by Power Zone Equipment. In general, Power Zone Equipment collects personal contact information (e.g. name, company, address, telephone number and e-mail address), which you knowingly provide either by registration, requesting quotes, answering questions or otherwise for use in our commercial relationship. At times we may collect additional personal data that you voluntarily provide, including, but not limited to, job title, additional contact information, date of birth, hobbies, areas of interest, and professional affiliations.

3.0 Use of Personal Data

Power Zone Equipment’s website is intended to be used by Power Zone Equipment customers, commercial visitors, business associates, and other interested parties for business purposes. Personal data collected by Power Zone Equipment through its website or by other means is used in support of our commercial relationship with you, including, but not limited to, the processing of customer orders, orders from vendors, managing accounts, learning about customers’ needs, responding to inquiries, and providing access to information. Also, in compliance with the laws and regulations of the relevant jurisdiction to support our relationship with you:

  • we may share personal data with our affiliates to better understand your business needs and how we can improve our products and services;

  • we may use third party service providers to assist us in collecting, assembling or processing personal data in connection with services related to our business relationship;

  • we (or a third party on our behalf) may use personal data to contact you about a Power Zone Equipment offer in support of your business needs or to conduct online surveys to understand better our customers’ needs; and

  • we may use personal data for marketing and promotional activities.

If you choose not to have your personal data used to support our customer relationship (especially direct marketing or market research), we will respect your choice. We do not sell your personal data to third parties, nor share it with third parties except as set forth in this policy. Power Zone Equipment will retain your personal data as long as you maintain a customer relationship with Power Zone Equipment and/or if you have registered to receive marketing or other communication from Power Zone Equipment, until such time as you request that we delete such personal data.

4.0 Third Party Service Providers

Power Zone Equipment is the commercial operator of its website and uses service providers to assist in hosting or otherwise acting as data processors, to provide software and content for our sites and to provide other services. Power Zone Equipment may disclose personal data supplied by you to these third parties who provide such services under contract to protect your personal data. In addition, where consistent with the laws and regulations of the relevant jurisdiction, Power Zone Equipment may disclose personal data if such disclosure:

  • is a use of the personal data for an additional purpose that is directly related to the original purpose for which the personal data was collected;

  • is necessary to prepare, negotiate and perform a contract with you;

  • is required by law or the competent governmental or judicial authorities;

  • is necessary to establish or preserve a legal claim or defense;

  • is part of a corporate restructuring, sale of assets, merger or divestiture; or,

  • is necessary to prevent fraud or other illegal activities, such as willful attacks on Power Zone Equipment information technology systems.

5.0 International Data Transfer

For our customers in Switzerland and the European Union (EU), please note that Power Zone Equipment is a US based company. If you use our websites or web portals or, all information, including personal information, may be transferred to Power Zone Equipment (including subcontractors that may be maintaining and/or operating our website) in the United States and elsewhere and may be transferred to third parties that may be located anywhere in the world. Although this may include recipients of information located in countries where there may be a lower level of legal protection for your personal information than in your location country, we will protect your information in accordance with requirements applicable to your information and/or location. Specifically, for data transfers out of the EU, Power Zone Equipment will utilize data transfer agreements containing the Standard Contractual Clauses. By using our websites or web portals, you unambiguously consent to the transfer of your personal information and other information to the United States and elsewhere for the purposes and uses described herein. 

6.0 Non-Personal Data Collected Automatically

When you access Power Zone Equipment’s websites or web portals, we may automatically (i.e., not by registration) collect non-personal data (e.g. type of Internet browser and operating system used, domain name of the website from which you came, number of visits, average time spent on the site, pages viewed). We may use this data and share it with our worldwide affiliates and related service providers to monitor the attractiveness of our websites and improve their performance or content. In this case, processing is performed on an anonymous basis and at Power Zone Equipment’s discretion.

7.0 Other Online Data

In addition, certain online technical applications or other interactions you have with Power Zone Equipment may require the entry of business and technical data. By providing the requested information, you are consenting to the processing and storage of such information by Power Zone Equipment. Unless Power Zone Equipment is advised that you want this information removed from Power Zone Equipment’s server, such information may be retained by Power Zone Equipment and used for future commercial communications. A request for removal of this information can be made at the contact information provided below. Power Zone Equipment will take all reasonable precautions to assure that no such information will be provided or divulged to other third parties, except, if applicable, those third parties performing site hosting, maintenance, and related site service activities.

8.0 “Cookies” – Information Stored Automatically on Your Computer

Cookies are information stored automatically on a website user’s computer. When a user views Power Zone Equipment’s website(s), Power Zone Equipment may store some data on the user’s computer in the form of a “cookie” to automatically recognize the user upon future visits to Power Zone Equipment’s website(s). Power Zone Equipment will make reasonable efforts to ensure compliance with the laws and regulations of relevant jurisdictions with regard to cookies.

9.0 Children

Power Zone Equipment will not knowingly collect personal data from children under the age of 18. Power Zone Equipment’s website(s) is not intended for individuals under 18 years of age

10.0 Security and Data Integrity

Power Zone Equipment will take reasonable precautions to protect personal data in its possession secure against the risk of loss, misuse, unauthorized access, disclosure, alteration and destruction. Power Zone Equipment periodically reviews its security measures in an effort to ensure the privacy of personal data.

Power Zone Equipment will use personal data only in ways that are compatible with the purposes for which it was collected or subsequently authorized by you. While Power Zone Equipment will take reasonable steps to ensure that personal data is relevant to its intended use, accurate, complete, and current, Power Zone Equipment is also relying upon each individual to assist in providing accurate updates of his or her personal data.

11.0 Links to Other Websites

Power Zone Equipment website(s) may contain “links” to websites owned and operated by third parties. By accessing these links, which are provided for your convenience, you will leave our site and will be subject to the privacy practices of the other website. This policy does not apply to any personal information you provide to unrelated third parties.

12.0 Data Retention

In general, Power Zone Equipment will only retain personal data for as long as needed for the specific purpose of processing and in accordance with Power Zone Equipment’s records management policy, or as otherwise required by the laws and regulations of a particular jurisdiction. For example, data will be retained during the time period that you are authorized to use Power Zone Equipment website(s), including any Power Zone Equipment tools accessible through our website(s). Upon termination of such authorization, your personal data related to use of Power Zone Equipment website(s) will be removed.

13.0 Data Access and Correction

Upon request, Power Zone Equipment will grant individuals reasonable access to personal data that it holds about them. In addition, Power Zone Equipment will take reasonable steps to permit individuals to correct, amend, or delete information that is demonstrated to be inaccurate or incomplete. Power Zone Equipment also relies upon each individual to assist in providing accurate updates of his or her personal data. In order to access, correct, amend, or delete the personal data Power Zone Equipment holds about an individual, the individual should contact the following:

PHONE: +1-719-754-1981 | EMAIL: sales@powerzone.com 

14.0 EU Data Privacy Rights

If your personal data is processed in the EU or you are a resident of the EU, the EU General data Protection Regulation grants you certain rights under the law. In particular, the right to access, correct, or delete the personal data Power Zone Equipment holds about you.

To the extent required by applicable law, Power Zone Equipment will grant individuals reasonable access to personal data that Power Zone Equipment holds about them and will take reasonable steps to permit such individuals to correct, amend, or delete information that Power Zone Equipment holds about them. Power Zone Equipment also relies upon each individual to assist in providing accurate updates of his or her personal data. In order to access, correct, amend, or delete the personal data Power Zone Equipment holds about an individual, the individual should contact his or her Power Zone Equipment commercial contact or contact us at the following email address: sales@powerzone.com.  

If you have a comment, question, or complaint about how Power Zone Equipment is handling your personal data, we invite you to contact us in order to allow us to resolve the matter. In addition, individuals located in the EU may submit a complaint regarding the processing of their personal data to the EU data protection authorities (DPAs). The following link may assist you in finding the appropriate DPA: http://ec.europa.eu/justice/data-protection/bodies/authorities/index_en.htm.

15.0 Changes to this Policy

Power Zone Equipment reserves the right to modify this policy from time to time in order that it accurately reflects the legal and regulatory environment and our data collection principles. When material changes are made to this policy, Power Zone Equipment will post the revised policy on our website.

 

16.0 Questions and Comments

If you have any questions or comments about this policy (e.g. to review and update, or remove your personal data from our database) please contact +1-719-754-1981 or sales@powerzone.com 

Compressors, Fans and Blowers | Types of Compressor, Fans and Blowers

Communications Power Zone

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7 min read

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Aug 9, 2018

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Compressors, fans, and blowers are widely used in various industries. These devices are quite suitable for complex processes and have become indispensable for some specific applications. They have been defined in simple terms as below:

  • Compressor: A compressor is a machine which reduces the volume of gas or liquid by creating a high pressure. We can also say that a compressor simply compresses a substance which is usually gas.
  • Fans: a Fan is a machine used to move fluid or air. It is operated through a motor via electricity which rotates the blades that are attached to a shaft.
  • Blowers: Blower is a machine to move air at a moderate pressure. Or simply, blowers are used for blowing air/gas.

The basic difference between the above three devices is the way they move or transmit air/gas and induce system pressure. Compressors, Fans & Blowers are defined by ASME (American Society of Mechanical Engineers) as the ratio of the discharge pressure over the suction pressure. Fans have the specific ratio up to 1.11, blowers from 1.11 to 1.20 and compressors have more than 1.20.

Types of Compressors

Compressor types can be mainly grouped into two: Positive Displacement & Dynamic

Positive displacement compressors are again of two types: Rotary and Reciprocating

  • Types of Rotary compressors are Lobe, Screw, Liquid Ring, Scroll, and Vane.
  • Types of Reciprocating compressors are Diaphragm, Double acting, and Single acting.

Dynamic Compressors can be categorized into Centrifugal and Axial.

Let us understand these in detail.

Positive displacement compressors use a system which induces in a volume of air in a chamber, and then reduce the volume of the chamber to compress the air. As the name suggests, there is a displacement of the component that reduces the volume of the chamber thereby compressing air/gas. On the other hand, in a dynamic compressor, there is a change in velocity of the fluid resulting in kinetic energy which creates pressure.

Reciprocating compressors use pistons where discharge pressure of air is high, the quantity of air handled is low and which has a low speed of the compressor. They are suitable for medium and high-pressure ratio and gas volumes. On the other hand, rotary compressors are suitable for low and medium pressures and for large volumes. These compressors do not have any pistons and crankshaft. Instead, these compressors have screws, vanes, scrolls etc. So they can be further categorized on the basis of the component they are equipped with.

Types of Rotary Compressors

  • Scroll: In this equipment, air is compressed using two spirals or scrolls. One scroll is fixed and does not move and the other one movese in circular motion. Air gets trapped inside the spiral way of that element and gets compressed at the middle of the spiral. These are often with oil-free designs and require low maintenance.
  • Vane: This consists of vanes that move in and out inside an impeller and compression occurs because of this sweeping motion. This forces the vapor into small volume sections, changing it into high pressure and high temperature vapor.
  • Lobe: This consists of two lobes which rotate inside a closed casing. These lobes are displaced with 90 degrees to one another. As the rotor rotates, air is drawn into the inlet side of the cylinder casing and is pushed with a force out from the outlet side against the system pressure. The compressed air is then delivered to delivery line.
  • Screw: This is equipped with two inter-meshing screws which traps air between the screw and the compressor casing, which results in squeezing and delivering it at a higher pressure from the delivery valve. The screw compressors are suitable and efficient in low air pressure requirements. In comparison to a reciprocating compressor, the compressed air delivery is continuous in this type of compressor and it is quiet in operation.
  • Scroll: The scroll type compressors have scrolls driven by the prime mover. The scrolls outer edges trap air and then as they rotate, the air travel from outwards to inwards thus getting compressed due to a reduction in the area. The compressed air is delivered through central space of the scroll to the delivery airline.
  • Liquid Ring: In this type of compressor vanes are built inside a cylindrical casing. When the motor rotates, gas gets compressed. Then liquid mostly water is fed into the device and by centrifugal acceleration, it forms a liquid ring through the vanes, which in turn forms a compressing chamber. It is capable of compressing all gases and vapors, even with dust and liquids.

Reciprocating Compressor

  • Single-Acting Compressors: It has piston working on air only in one direction. The air is compressed only on the top part of the piston.
  • Double-Acting Compressors: It has two sets of suction/intake and delivery valves on both sides of the piston. Both sides of the piston are utilized in compressing the air.

Dynamic Compressors

The main difference between displacement and dynamic compressors is that a displacement compressor works at a constant flow, whereas a dynamic compressor such as Centrifugal and Axial works at a constant pressure and their performance is affected by external conditions such as changes in inlet temperatures etc. In an axial compressor, the gas or fluid flows parallel to the axis of rotations or axially. It is a rotating compressor that can continuously pressurize gases. The blades of an axial compressor are relatively closer to each other. In a centrifugal compressor, fluid enters from the center of the impeller, and moves outward through the periphery by guide blades thereby reducing the velocity and increasing pressure. It is also known as a turbo compressor. They are efficient and reliable compressors. However, its compression ratio is lesser than axial compressors. Also, centrifugal compressors are more reliable if API (American petroleum Institute) 617 standards are followed.

Types of Fans

Depending on their designs, the following are main types of fans:

  • Centrifugal Fans: In this type of fan, airflow changes direction. They can be inclined, radial, forward curved, backward curved etc. These kinds of fans are suitable for high temperatures and low and medium blade tip speeds at high pressures. These can be effectively used for highly contaminated airstreams.
  • Axial Fans: In this type of fan, there is no change in direction of air flow. They can be Vanaxial, Tubeaxial, and Propeller. They produce lower pressure than the Centrifugal fans. Propeller-type fans are capable of high-flow rates at low pressures. Tube-axial fans have low/medium pressure and high flow capability. Vane-axial fans have an inlet or outlet guide vanes, exhibit high pressure and medium flow-rate capabilities.

The air flow required in the process along with required outlet pressure are key factors determining the selection of type and size of a fan. Fan enclosure and duct design also determine how efficiently they can work.

Blowers

Blower is equipment or a device which increases the velocity of air or gas when it is passed through equipped impellers. They are mainly used for flow of air/gas required for exhausting, aspirating, cooling, ventilating, conveying etc. Blower is also commonly known as Centrifugal Fans in industry. In a blower, the inlet pressure is low and is higher at the outlet. The kinetic energy of the blades increases the pressure of the air at the outlet. Blowers are mainly used in industries for moderate pressure requirements where the pressure is more than the fan and less than the compressor.

Types of Blowers: Blowers can also be classified as Centrifugal and Positive displacement blowers. Like fans, blowers use blades in various designs such as backward curved, forward curved and radial. They are mostly driven by electric motor. They can be single or multistage units and use high speed impellers to create velocity to air or other gases.

Positive displacement blowers are similar to PDP pumps, which squeezes fluid that in turn increases pressure. This kind of blower is preferred over a centrifugal blower where high pressure is required in a process.

Applications of Compressors, Fans and Blowers

Compressors, Fans and blowers are mostly used for processes such as Gas Compression, Water Treatment Aeration, Air Ventilation, Material Handling, Air Drying etc. Compressed air applications are widely used in various fields such as Aerospace, Automotive, Chemical Manufacturing, Electronics, Food and Beverage, General Manufacturing, Glass Manufacturing, Hospitals/Medical, Mining, Pharmaceuticals, Plastics, Power Generation, Wood Products and many more.

The main benefit of an air compressor includes its usage in the water treatment industry. The waste water treatment is a complex process that requires breaking down millions of bacteria as well as the organic waste.

Industrial fans are also used in a variety of applications such as chemical, medical, automotive, agricultural, mining, food processing, and construction industries, which can each utilize industrial fans for their respective processes. They are mainly used in many cooling and drying applications.

Centrifugal blowers are routinely used for applications such as dust control, combustion air supplies, on cooling, drying systems, for fluid bed aerators with air conveyor systems etc. Positive displacement blowers are often used in pneumatic conveying, and for sewage aeration, filter flushing, and gas boosting, as well as for moving gases of all kinds in the petrochemical industries.

Therefore, compressors, fans, and blowers, largely cover Municipal, Manufacturing, Oil & Gas, Mining, Agriculture Industry for their various applications, simple or complex in nature.

These are available from various manufacturers in different designs. Few of the well-known brands are Roots, Hoffman, Bosch, Sutterbuilt, Sullair and Joy.

A detailed study of all the designs and specifications is required to buy an appropriate compressor, fan or a blower that is available in the market so that it can match the requirements of your process and ensure reliability and durability at the same time.

If you have any questions, please feel free to contact us.

What is the difference between a fan and a blower as classified by ASME?

Compressors, Fans and Blowers | Types of Compressor, Fans and Blowers