Absolute humidity actual quantity of water vapour in the air, usually expressed as so many grains of moisture in a cubic foot of air. The rate of air flow moving through a space, usually expressed in terms of room volume units per unit of time such as room air changes per hour. The deformation of materials caused by the action of stress. Engineering interview questions,mcqs,objective questions,class lecture notes, seminor topics,lab viva pdf ppt doc book free download. Descriptions of mechanics begin with definitions of such quantities as acceleration, displacement, force, mass, time and velocity. Ac drive an electronic device used to control the speed of an ac motor. Motor design jargon buster and glossary of terms, useful for mechanical engineers, electrical engineers and industrial engineers. A type of current where the polarity is perpetually reversing, causing the directional flow in a circuit to reverse at regular intervals. Diaphragm to prevent debris buildup within the valve, a diaphragm is a flexible membrane within a valve that regulates water flow from the supply lines. Definitions a vae group pty ltd and any of its subsidiaries shall hereinafter be referred to as vae group. Adiabatic compression compression of air without receiving or giving up heat. Many curriculumrelated terms are frequently used interchangeably even if they refer to different concepts and, depending on the context, the same term may be understood in many different ways by various stakeholders. A btu is defined as the amount of heat energy required to raise the temperature of one pound of water by one.
Jul 12, 2009 list of basic terms for mechanical engineering 1. Unless otherwise agreed in writing work is undertaken by phd mechanical ltd hereinafter called the contractor only on these conditions and no variation of or addition thereto shall have effect unless it is stated in writing. A glossary of forestry terminology acre a land area of 43,560 square feet about 209 by 209 feet. Whether youre a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement. Ancillary agreement multiparty agreement ancillary to a contract usually signed by a. Mechanics terms and definitions flashcards quizlet. Mechanical definition is of or relating to machinery or tools. The discipline of hvac includes a large number of specialized terms and acronyms, many. These references are given in the suggested readings so that the flow of the article is not interrupted. Understanding electricity requires knowledge of these basic electrical terms.
Glossary of wastewater terms activated sludge sludge that has undergone flocculation forming a bacterial culture typically carried out in tanks. Learn plumbing vocabulary and industrial terms here. Glossary all terms and definitions listed alphabetically. Glossary of terms used in timber harvesting and forest engineering bryce j. Absolute temperature a temperature scale expressed in degrees of or oc using absolute zero as a base. In analytical engineering terms, this corresponds to checking the units. And logical and operator aod automatic overdrive, ford ap air pump apb active parking brake. Read our hvac glossary and get to know the various technical terms used in heating and cooling systems. It is also known as engineering stress or nominal stress. Definition and classification of mechanical fastening methods. Use this hvac glossary to brush up on heating and cooling resource terminology from american standard. Piezoelectricity electric polarization in a substance especially certain crystals resulting from the application of mechanical stress pressure. Mechanical engineering design includes all mechanical design, but it is a. Alternating current ac an electric current that reverses its direction many times a second at regular intervals.
Mechanical engineering terms and definitions terminology. This glossary of mechanical engineering terms pertains specifically to mechanical engineering and its subdisciplines. My personal definition of mechanical engineering is. If you disagree with these terms and conditions or any part of these terms and conditions, you must not use this website. Glossary terms and definitions provided courtesy of the steel founders society of america. That portion of a regulating valve which converts mechanical fluid, thermal energy or. Ase shall not be liable for any direct, special, consequential, or exemplary damages resulting, in whole or in part, from the readers use of, or reliance upon, this material. Allowable cut volume of wood that can be cut during a given period without. Definition of some common hvac industry terms absolute humidity, pressure, temperature and more. The problem definition is more specific than recognizing the.
This glossary of engineering terms is a list of definitions about the major concepts of engineering. Hence, engineers have come up with a way to make things close to perfect by specifying tolerances. Compounds applied to metallic surfaces to prevent surface carbonization. Advanced primary treatment the use of special additives to raw wastewater to cause flocculation or clumping to help settling before the primary treatment such as screening. A nongraphical description of a layer that autocad mechanical saves in the data area of a drawing, similar to how it saves a block definition.
Glossary of selected terms used in corrosion science and. Over 7,400 entriesthis new dictionary provides definitions and explanations for mechanical engineering terms in the core areas of design, stress analysis, dynamics and vibrations, thermodynamics, and fluid mechanics, in over 7,400 clear and concise a to z entries, many illustrated. An opening into the ground from which drains can be inspected and rodded or cleaned out, both towards and away from a building, also acting as a junction into which the drainage from other plumbing fixtures may discharge into the horizontal drain. Hvac terms and definitions a short glossary if your air conditioner is nearing its end and youre in the process of trying to find a replacement, its important to know the industry jargon.
Batteries are generally specified in terms of cca and reserve capacity. The special terms apr will continue to apply until all qualifying purchases are paid in full. Absolute humidity the weight of water vapor in a given amount of air. Pictorial glossary the pictorial glossary includes definitions and illustrations for many terms that are frequently used in the electrical industry. I hope that both learners and professionals in requirements engineering will find this structure useful and consider consulting the glossary to be worthwhile. Hvac heating, ventilation, and air conditioning is a major subdiscipline of mechanical engineering. Special terms apply to qualifying purchases charged with approved credit. The reserve capacity is the time in minutes that a given battery can be discharged at a constant rate of 25 amperes, at a temperature of 80 f before the battery terminal voltage falls to 1. This standard is provided for use only by a suitably qualified professional design engineer who shall apply the skill, knowledge and experience necessary to understand the risks involved and undertake all. Abbreviations of mechanical terminology amr drive torque control anc active noise control. Explanation of cooling and air conditioning terminology for. Allaged or unevenaged forest management management of a forest by periodically removing some trees from the stand.
Mechanical definition, having to do with machinery. This handy glossary of terms will tell you what you need to know when discussing your hvac system with a professional contractor. Explanation of cooling and air conditioning terminology for it professionals btu the abbreviation for british thermal unit. Thermodynamics latent heat latent is energy released or absorbed, by a body or a the, during a thermodynamic system, during constanttemperature process. Pdf portable document format definition tech terms.
The goal of hvac design is to balance indoor environmental comfort with other factors such as installation cost, ease of maintenance, and energy efficiency. Absolute pressure pressure measured from the true zero or point of no pressure. A parcel of land, containing 4,840 square yards or 43,560 square feet. The purpose of this committee was to prepare a standard for general industry use that would contain a compilation of terms and their definitions that are important to the understanding of quality assurance requirements. The term aerospace first appeared in print in the interim glossary. These terms and conditions govern your use of this website. Nonmechanical definition, having to do with machinery. A mechanical system that supplies and transmits energy for the operation of other mechanisms or systems. Aemt association of electrical and mechanical trades about aemt membership buysell bulletin helpline contact. Ammeters are always connected in series with the circuit to be tested. Sep, 2016 descriptions of mechanics begin with definitions of such quantities as acceleration, displacement, force, mass, time and velocity.
A measure of the average amount of force exerted per unit area. An example is the diversity of definitions for the term curriculum, a word that in many national. Some of the basic terminologies that every mechanical engineering student need to know are covered in this article. Mechanical engineering air compressor terms and definitions.
If youve had another companys technician at your home and heard a term that you did not understand, we hope our comfort glossary will help. Glossary of plumbing and other terms used in the text access chamber. Common mechanical engineering terms ball and detent n a simple mechanical arrangement used to hold a moving part in a temporarily fixed position relative to another part. The ball slides within a bored cylinder, against the pressure of a spring, which pushes the ball against the detent, a hole of smaller diameter than the ball. Vibration terminology periodic motion, time period, cycle, pdf. Cam n a mechanical device consisting of an eccentric or multiply curved wheel mounted on a rotating shaft, used to produce variable or reciprocating motion in another engaged or contacted part cam follower. Hvac stands for heating, ventilation, and air conditioning. The ad hoc committee was composed of representatives. Ase glossary of automotive terminology englishspanish.
The minimum percentage established by the doe for furnaces is 78%. Department of mechanical engineering and mechanics tolerancing definition. A transmission medium with enough bandwidth to carry multiple voice, video, or data channels simultaneously. Layer definitions are used by autocad mechanical commands to create layers on demand. This handbook has been prepared to meet the need for uptodate knowledge, it presents a brief description of the most important currently used mechanical engineering terms with full understanding and background of the meaning of the words. It is defined as the ratio of inertia force of a flowing fluid and the. A square surface mount chip package in plastic with leads pins on all four sides. Ase shall not be liable for any direct, special, consequential, or exemplary damages resulting, in. The final responsibility for the definitions rests. Relief typically added to a sheet metal part to relieve stress, or the tear, that occurs when a portion of a piece of material is bent. Your service technician should always talk in terms that you can relate to.
Glossary of electrical engineering terms and definitions listed alphabetically. You can email a pdf document to your friend and it will look the same way on his screen as it looks on yours, even if he. In physical sciences, mechanical energy is the sum of potential energy and kinetic energy. Leaded chip carrier, also called plcc or plastic leaded chip carrier.
This glossary includes words and phrases for teaching knowledge connected to language, language use and the background to and practice of language teaching and learning as assessed in tkt. Pdf is a multiplatform file format developed by adobe systems. Glossary of terms relating to thermal and thermo mechanical. Terms and technical definitions for heating, cooling and indoor air quality products. Please note that the definitions included in this glossary reflect the manner in which these terms are used on the website, which in some instances may differ from their meaning in. Dip tube a tube with the purpose of bringing cold water to. The utilization of biological processes on farms to produce food and other products useful and necessary to man. This new dictionary provides definitions and explanations for mechanical engineering terms in the core areas of design, stress analysis, dynamics and vibrations, thermodynamics, and fluid mechanics, in over 7,400 clear and concise a to z entries, many illustrated. Allowance for a specific variation in the size and geometry of part. A measurement that numerically defines the size and location of sketch geometry, such as the length of a line, diameter of a circle, or radius of an arc. The rate at which outside air replaces indoor air in a space. Both a way of life and a means of life for the people involved in. System actively influences the intake noise, reducing it by about 15 db.
Hvac definitions in air conditioning and heating the name hvac is often used. The more hvac terms you know, the easier it will be to understand the different options available to you. Frictional forces associated with ventilation anatomic structures tissue viscous resistance ability of air to flow depends on gas viscosity gas density length and diameter of the tube flow rate of the gas through the tube raw p ta flow cmh2olsec p ta. Terms that are underlined and italicized are included in the glossary as a separate definition. Annualized fuel utilization efficiency is a measure of your furnaces heating efficiency. Sirois foreword the terminology used in forest engineering and har vesting has evolved over many years, beginning with the early lumberjacks who cut trees for homes and industry. Glossary of autocad mechanical terms autocad mechanical. Topics covered include heat transfer, combustion, control, lubrication, robotics, instrumentation, and measurement. Glossary of caddrafting terms glossary bend relief.
Glossary of terms used timber hawes ing engineering. This dictionary will help you navigate the most common terms youll come across during your buying decision. Important terms are annotated with hints and additional information. The hvac industry can be a maze of unfamiliar acronyms and industry terms. Acceleration is the time rate of change of velocity of a body. Common definitions for maintenance and construction terms the following definitions have been adapted from those developed for the february 1998 study team report entitled, facilities maintenance assessment and recommendations, from information developed by the federal real property council frpc and from descriptions.
An example is latent heat of fusion for a phase change, melting, at a specified tempera. A glossary of terms used in mechanics of materials. Over 7400 entriesthis new dictionary provides definitions and explanations for mechanical engineering terms in the core areas of design, stress analysis. Means of speeding the flow of cargo through an electronic release notification system. Construction terminology cheat sheet planning assignable square footage asf usable square footage within a physical space measured from finished wall to finished wall. We consulted many standard works in biomechanics for the collection of these terms. Absolute pressure pressure measured with the base of zero.
What are the most important terms and definitions in. This is one of the most basic engineering quantities. The higher the afue percentage, the more efficient the furnace. Most of the terms listed in wikipedia glossaries are already defined and explained within. Steel terms and definitions a age hardening degeneration of steel that increases hardness and strength while decreasing ductility. Glossary of plumbing and other terms used in the text. Addendum addenda written information adding to, clarifying or modifying the bidding documents. Other acronyms less used to describe air conditioning and heating applications is hvacr or heating, ventilation, air conditioning, and refrigeration and hacr or heating, air conditioning and refrigeration. Aisi american iron and steel institute a north american trade association with 50 member companies and over 100 associate members. Teves system containing interface to electronics, with driverassistance. Additionally, all terms are translated into german. Definitions of terms used in mechanical industry crazyengineers. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. A device that creates mechanical motion by converting various forms of energy to rotating or linear mechanical energy.
Mechanical definition of mechanical by merriamwebster. Dictionary of mechanical engineering oxford reference. Spontaneous ventilation movement of air in and out of the lungs muscles of inspiration contract expand the thorax passive exhalation air flow due to pressure gradients high to low pressure no gas flow present when pressures across the gradient are equal. This glossary is intended to provide the user with a guide to. Hvac terminology hvac glossary of terms american standard. Ammeter an instrument for measuring the flow of electrical current in amperes. Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal. You can help enhance this page by adding new terms or writing definitions for existing ones. Although the terms brightness and luminance are often used interchangeably, they are different. Apr 12, 2011 let us start something like defining terms of hard core mechanical industry.
For terms having both a general meaning and a specific meaning in a requirements engineering context, both meanings are defined. It is the macroscopic energy associated with a system. A measurement of heat energy commonly used to measure heat loads in data centers and it rooms in north america. The principle of conservation of mechanical energy states that in an isolated system that is only subject to conservative forces, the mechanical energy is constant.
This is a list of automotive technical terms in english and spanish. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This process normally follows rapid cooling or cold working. The user of this glossary assumes all risks for the use of the information contained in the glossary. The monthly payment for this purchase will be the amount that will pay for the purchase in full in equal payments during the promotional special terms period. An addendum is generally issued by the owner to the. In mechanisms, mechanism refers to two or more rigid or resistant bodies connected together by joints so they exhibit definite relative motions with respect to one another. A glossary of hvac terms confused by the many terms and acronyms surrounding your indoor comfort system. A pdf file captures document text, fonts, images, and even formatting of documents from a variety of applications. Words which are in bold are explained in the glossary.
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