Learning Objectives

فهرست عناوین اصلی در این پاورپوینت

فهرست عناوین اصلی در این پاورپوینت

● Learning Objectives
● Learning Objectives (continued)
● Introduction
● System Overview
● CAUTION
● Stratospheric Ozone Depletion
● Stratospheric Ozone Depletion (continued)
● The Montreal Protocol
● The Montreal Protocol (continued)
● The Clean Air Act
● The Clean Air Act (continued)
● EPA Penalties
● Greenhouse Effect
● Greenhouse Effect (continued)
● Greenhouse Gases
● Greenhouse Gases (continued)
● Refrigerants
● CFCs
● HCFCs
● HFCs
● Alternative Refrigerants
● Alternative Refrigerants (continued)
● Disposable Refrigerant Cylinders
● Disposable Refrigerant
Cylinders (continued)
● Refillable Cylinders
● Refillable Cylinders (continued)
● CAUTION
● Cylinder Color Code
● Refrigerant Safety
● Health Hazards
● CAUTION
● First Aid
● First Aid (continued)
● Poisonous Gas
● General Workplace
Precautions
● General Workplace
Precautions (continued)
● Handling Refrigerant Cylinders
● Handling Refrigerant Cylinders (continued)
● Summary
● Summary (continued)

نوع زبان: انگلیسی حجم: 0.73 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 56 صفحه
سطح مطلب: نامشخص پسوند فایل: pptx
گروه موضوعی: زمان استخراج مطلب: 2019/06/08 12:24:22

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عبارات مهم استفاده شده در این مطلب

عبارات مهم استفاده شده در این مطلب

., learn, ozone, ۱۴, cengage, copyright, delmar, air, refrigerant, continue, greenhouse, gas,

توجه: این مطلب در تاریخ 2019/06/08 12:24:22 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

http://www.cengage.com/resource_uploads/downloads/1133716253_371791.pptx

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عبارات پرتکرار و مهم در این اسلاید عبارتند از: ., learn, ozone, ۱۴, cengage, copyright, delmar, air, refrigerant, continue, greenhouse, gas,

مشاهده محتوای متنیِ این اسلاید ppt

مشاهده محتوای متنیِ این اسلاید ppt

environmental and safety practices instructor name your name ۲ chapter copyright ۲ ۱۴ delmar cengage learning learning objectives describe the effects of cfcs on the world’s ozone layer. explain the clean air act. identify the pros and cons of cfcs hcfcs and hfcs. work safely with mobile air conditioning and refrigeration equipment. copyright ۲ ۱۴ delmar cengage learning learning objectives continued explain the differences between virgin recycled and recovered refrigerant. explain the greenhouse effect and its impact on our environment. list the greenhouse gases. explain the differences between disposable and refillable refrigeration containers. copyright ۲ ۱۴ delmar cengage learning learning objectives continued discuss the rationale for alternate refrigerants. understand the health hazards of working with refrigerants. explain how refrigerants may produce poisonous gases. learn to how handle refrigerant containers safely. understand general workplace precautions for working with refrigerants. copyright ۲ ۱۴ delmar cengage learning introduction as of january ۱ ۱۹۹۳ any person repairing or servicing motor vehicle air conditioners must certify to the environmental protection agency epa that they have acquired and are properly using approved equipment. each technician authorized to use such equipment must be properly trained and certified under section ۶ ۹ of the clean air act. copyright ۲ ۱۴ delmar cengage learning system overview this chapter serves as a guide for technicians working in the air conditioning and mobile refrigeration trades. it outlines some of the safe handling and environmental concerns for working with today’s refrigerants. you will also learn about the epa’s penalty for undocumented refrigerant gas usage as it relates to ozone depleting substances. copyright ۲ ۱۴ delmar cengage learning caution this chapter by no means exempts a technician from getting proper certification or licensing as mandated by the epa. copyright ۲ ۱۴ delmar cengage learning stratospheric ozone depletion the ozone layer is located in the stratosphere high above the earth’s surface figure ۲ ۱ . the ozone layer is formed by ultraviolet uv light from the sun acting on oxygen molecules. the ozone layer is often referred to as a protective layer because it absorbs and scatters ultraviolet light from the sun preventing some of the harmful ultraviolet light from reaching the earth’s surface. copyright ۲ ۱۴ delmar cengage learning stratospheric ozone depletion continued figure ۲ ۱. location of the stratosphere far above the earth’s surface. copyright ۲ ۱۴ delmar cengage learning stratospheric ozone depletion continued chlorofluorocarbons cfcs gradually float up to the stratosphere where the chlorine reacts with the ozone causing it to change back into oxygen figure ۲ ۲ . when the ozone layer decomposes more uv radiation penetrates to the earth’s surface figure ۲ ۳ . stratospheric ozone depletion is a global concern and it will take the cooperation of many nations to bring this process under control. copyright ۲ ۱۴ delmar cengage learning stratospheric ozone depletion continued figure ۲ ۲. cfc molecules gradually float up to the stratosphere where they damage the ozone layer. copyright ۲ ۱۴ delmar cengage learning stratospheric ozone depletion continued figure ۲ ۳. how chlorofluorocarbons cfcs destroy the ozone layer. copyright ۲ ۱۴ delmar cengage learning stratospheric ozone depletion continued the health and environmental concerns caused by the breakdown of the ozone layer include increase in skin cancers suppression of the human immune response system increase in cataracts damage to crops damage to aquatic organisms increase in global warming copyright ۲ ۱۴ delmar cengage learning the montreal protocol the montreal protocol is a response to the global nature of ozone depletion. on september ۱۶ ۱۹۸۷ in montreal ۲۴ nations and the european economic community eec signed the montreal protocol on substances that deplete the ozone layer. most of the nations that are major producers and consumers of cfcs and halon signed the agreement. on august ۱ ۱۹۸۸ the epa put this agreement into regulations for the united states figure ۲ ۴ . copyright ۲ ۱۴ delmar cengage learning the montreal protocol continued figure ۲ ۴. the ozone depletion process. copyright ۲ ۱۴ delmar cengage learning the clean air act the clean air act directs the epa to establish regulations to prevent the release of ozone depleting substances. sections ۶ ۸ and ۶ ۹ deal with ozone depletion. section ۶ ۸ pertains to stationary air conditioning equipment mobile refrigeration equipment and air conditioning equipment that uses r ۲۲. copyright ۲ ۱۴ delmar cengage learning the clean air act continued section ۶ ۹ deals with the mobile motor vehicle open driven air conditioning industry. the sale of refrigerant containers weighing less than ۲ pounds is restricted to technicians certified in section ۶ ۹ figure ۲ ۵ . technicians working with hfc ۱۳۴a mobile vehicle air conditioning must be trained and certified by an epa approved organization. technicians already certified to handle cfc ۱۲ are not required to recertify to work with hfc ۱۳۴a. copyright ۲ ۱۴ delmar cengage learning the clean air act continued figure ۲ ۵. one pound disposable refrigerant can. copyright ۲ ۱۴ delmar cengage learning epa penalties epa penalty policies are based on the u.s. clean air act and its international counterparts. noncompliance could result in fines of up to ۲۵ a day per violation. refrigerant leaks not fixed within ۳ days are subject to a ۳۲ ۵ fine per day per unit. purchasing used or imported refrigerant gas calls for fines of ۳ per ۳ pound cylinder of refrigerant gas. copyright ۲ ۱۴ delmar cengage learning greenhouse effect the greenhouse effect is a naturally occurring process that helps to heat the earth’s surface and atmosphere. the earth absorbs incoming solar radiation and then cools by emitting long wavelength infrared radiation. this radiation is absorbed by greenhouse gases thereby preventing the heat from escaping. copyright ۲ ۱۴ delmar cengage learning greenhouse effect continued the increase in greenhouse gases may increase average global temperature. in the last few centuries human activity has directly or indirectly caused the concentration of the major greenhouse gases to increase. scientists predict that the greenhouse effect will cause the planet to become warmer. copyright ۲ ۱۴ delmar cengage learning greenhouse gases some of the major greenhouse gases and their sources are co۲ burning of carbon based fuels ch۴ anaerobic bacteria in rice fields cows and sewage n۲o fossil fuels and fertilizer cfcs refrigeration and spray cans methane ch۴ directly related to food …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: ., learn, ozone, ۱۴, cengage, copyright, delmar, air, refrigerant, continue, greenhouse, gas,

این فایل پاورپوینت شامل 56 اسلاید و به زبان انگلیسی و حجم آن 0.73 مگا بایت است. نوع قالب فایل pptx بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/06/08 12:24:22 استخراج شده است.

http://www.cengage.com/resource_uploads/downloads/1133716253_371791.pptx

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