Ppt on solar refrigeration and air conditioning

Chapter 18: Air Pollution

of the Earth Ultraviolet Radiation and Ozone Approximately 99% of all ultraviolet solar radiation (all UVC and most UVB) is absorbed by/ gas in refrigeration and AC Production of Styrofoam No longer used in spray cans but use has increased in refrigerants Simplified Stratospheric /and Air-Conditioning Systems Systems are designed to provide a comfortable indoor environment for people Design depends on a number of variables Including the activity of people in the building, air temperature and humidity, and air/


Course Requirements, Syllabus, and Review Topics by unit

- A conic section shaped like an oval with tow points called foci. Bodies in the solar system orbit the sun in elliptical orbits with the sun at one of the 2 focus points/Air mass- A large body of air in the troposphere with similar characteristics Air pressure gradient- The difference in air pressure over a given distance. Close isobars indicate high pressure gradient and windy conditions. Anemometer- An instrument used to measure wind speed. Atmospheric, barometric, or air pressure- The pressure of the air/


Chapter 17: Air Pollution. Overview Air Pollution in the Lower Atmosphere Air Pollution in the Lower Atmosphere Controlling Common Pollutants of the Lower.

and Ozone Approximately 99% of all ultraviolet solar radiation (all UVC and most UVB) is absorbed by the ozone layer Approximately 99% of all ultraviolet solar radiation (all UVC and/refrigeration and AC Working gas in refrigeration and AC Production of Styrofoam Production of Styrofoam No longer used in spray cans but use has increased in refrigerants No longer used in spray cans but use has increased in refrigerants/chimney effect. Heating, Ventilation, and Air- Conditioning Systems Systems are designed to /


Chapter 21: Air Pollution. Overview Air Pollution in the Lower Atmosphere Air Pollution in the Lower Atmosphere Controlling Common Pollutants of the Lower.

and Ozone Approximately 99% of all ultraviolet solar radiation (all UVC and most UVB) is absorbed by the ozone layer Approximately 99% of all ultraviolet solar radiation (all UVC and/refrigeration and AC Working gas in refrigeration and AC Production of Styrofoam Production of Styrofoam No longer used in spray cans but use has increased in refrigerants No longer used in spray cans but use has increased in refrigerants/chimney effect. Heating, Ventilation, and Air- Conditioning Systems Systems are designed to /


SORPTION HEAT PUMPS AND REFRIGERATORS L.L. Vasiliev Luikov Heat & Mass Transfer Institute, Minsk, Belarus Belarus – Indian Workshop “Advances in sorption.

extremely need for heat pumping, refrigeration,  and air-conditioning in regions free of grid electricity  Concept of ammonia, CO 2, water and hydrogen as a nature friendly  working fluids for sorption technologies  Short Time Cycles sorption machines with dual sources of energy  (solar/gas, solar/electricity)  Concept of combined action of Physical Adsorption and Chemical Reactions  Heat Pipes for sorption heat pumping, solar cooking and refrigerators  Sorption technologies for natural gas/


CREIA40 Burbank 2016 The California Residential Mechanical Inspector J4 Exam Preparation September 22 and 23, am to 5 pm.

, heat, power, refrigeration, or air conditioning. This definition also shall include a vented decorative appliance. -Appliance Fuel Connector. An assembly of listed semirigid or flexible tubing and fittings to carry fuel between a fuel piping outlet and a fuel-burning appliance/systems shall include conventional fossil fuel, hot water boilers, electrical-resistance heated boilers, air/water or water/water heat pumps, or solar heat collector systems. A latter system shall be permitted to include booster or /


Environmental and Safety Practices

establish regulations to prevent the release of ozone- depleting substances. Sections 608 and 609 deal with ozone depletion. Section 608 pertains to stationary air- conditioning equipment, mobile-refrigeration equipment, and air-conditioning equipment that uses R-22. The Clean Air Act (continued) Section 609 deals with the mobile motor vehicle open-driven air-conditioning industry. The sale of refrigerant containers weighing less than 20 pounds is restricted to technicians certified in/


Building Services By Dr David Johnston and Alan Newall– licensed under the Creative Commons Attribution – Non-Commercial – Share Alike License http://creativecommons.org/licenses/by-nc-sa/2.5/

Alike License http://creativecommons.org/licenses/by-nc-sa/2.5/ ENVIRONMENTAL SCIENCE & SERVICES - LEVEL 1 Air conditioning Alan Newall & Dr David Johnston Air conditioning The term”air conditioning” is commonly used to describe any system where refrigeration is included to provide cooling. Cooling may be required to: Provide a healthy and comfortable environment for the occupants. Preserve goods. Precisely control various industrial processes. A wide range of/


U.S. D EPARTMENT OF H OUSING AND U RBAN D EVELOPMENT U.S. D EPARTMENT OF H OUSING AND U RBAN D EVELOPMENT C APITAL F UND G REEN P HYSICAL N EEDS A SSESSMENT.

From Oil, or Electric to NG  High-Performance Windows  Building Envelope  Warm Climate  High-Performance Air Conditioning  Cool Roofing  Window Tinting  Awnings and Shading  Green Solutions  Wind  Cogeneration  Solar PV  Solar HW  Geothermal 34 M ARK -T O -M ARKET (M2M) G REEN I TEMS  Water Conserving Devices  Refrigerators  Dishwashers  Heating and Cooling Products  Water Heaters  Windows  Sliding Glass Doors  Storm Door  Exterior Doors  Insulation  Interior Lighting/


Combined Heat and Power

water heating and solar cooling|air conditioning, desalination or process heat. https://store.theartofservice.com/the-combined-heat-and-power-toolkit.html Micro combined heat and power - CPVT CPVT systems are currently in production in Europe, with Zenith Solar developing CPVT /2012 overall within the Ene Farm project https://store.theartofservice.com/the-combined-heat-and-power-toolkit.html Refrigeration cycle - Comparison with Combined Heat and Power (CHP) A heat pump may be compared with a CHP unit, in/


Thank You For Today’s Opportunity

and vibration issues over time (maintenance troubleshooting costs) With shaft seal refrigerant leaks or oil leaks come troubleshooting , repair and replacement costs Semi-hermetic motors are “plug and play”. Set it an forget it. Eliminates the need to provide additional ventilation or tempering (air conditioning/for space heating 60% or more of service water heating from site solar or cogeneration, condensate subcooling, or solar panels. Condenser Water Heat Recovery HEX Captures Condenser Water Heat “Wasted/


Energy Efficiency: The first and most profitable way to delay Climate Change Moro Camp July 12, 2008 Arthur H. Rosenfeld, Commissioner California Energy.

≥0.40 standard concrete tile (same color) solar reflectance gain = cool fiberglass asphalt shingle R ≥0.25 Courtesy Elk Corporation 25 Development of Cool Paving Materials: Longer story than we have time 26 27 Cool Roofs Standards in the U.S. Building standards for reflective roofs - American Society of Heating and Air-conditioning Engineers (ASHRAE): New commercial and residential buildings - California Title 24 Building Energy/


Peculiarities of solar cooling systems: MEDISCO DESIGN GUIDELINES Osama Ayadi Dipartimento di Energia, Politecnico di Milano.

Thermal Driven process Heat Cold Water Air-conditioning Heat storage? Heat rejection? Cold Storage? Load? Source: ISE Fraunhofer osama.ayadi@polimi.it MEDISCO Concept Scheme Requirements  High driving temperatures => Concentrating Solar Collectors, for high direct radiation sites Advantages  Heat rejection by dry air (no water needs, low maintenance effort)  Ice storage (high storage capacity; high mismatch between cooling loads and solar gains is allowed) osama.ayadi/


Unit 9 Energy Chapters 15 and 16.

E Can produce E during peak hours – hot sunny days when the demand for air conditioning is high  use of fossil fuel powered electricity Active Solar Energy Systems Solar Water Heating Systems Worldwide – huge numbers of countries, apartments, homes use for hot / starting the process again On a hot day, the system can run in reverse. The water or refrigerant cools the building and then is pumped underground where extra heat is transferred to the ground around the pipes Geothermal Electricity Production Same/


The Smart Grid Enabling Energy Efficiency and Demand Response Clark W. Gellings Brevard Community College ETP1400 Distributed Electrical Power Generation.

added benefit of keeping the conditioned air cooler while it travels through the ducts. A radiant barrier is meant to work with your attics ventilation system; do not block soffit air flow and use with a ridge vent or solar attic fan. See www.reflectixinc/ the best 25% in a particular category in terms of energy consumption. Ductless Residential Heat Pumps and AC It is connected to the outdoor unit (condenser) via refrigerant lines & inter-unit wiring through a 3 1/2" opening in the wall. Since no ductwork/


SOLAR THERMAL AIR CONDITIONER Design Team 8. Introduction Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 2 Team 8:

Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 10 Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 11 Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 12  Air Conditioning Process Design Solar Air/be included in case of leaks  Certified refrigeration technologist will assist in constructing and charging the system Budget Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team/


Solar power The sun is the basic source of energy of our planet. The sun is a star of medium size that because of the big temperatures of its elements.

-70 °C) applications such as swimming pools, domestic hot water, and space heating. The most common types of solar water heaters are batch systems, flat plate collectors and evacuated tube collectors. Heating, ventilation, and air conditioning (HVAC) systems of buildings are closely interrelated. All seek to provide thermal comfort, acceptable indoor air quality, and reasonable installation, operation, and maintenance costs. Conventional HVAC systems account for roughly 28 percent of/


By Benjamin Bolshinsky. Introduction: In the course of the Collaborative unit I designed an eco- friendly house. This house uses very little energy and.

. They use heat (burning propane) to produce cold inside the refrigerator.  Energy saving light bulbs- These light-bulbs are more energy efficient then normal ones. They cost approximately the same and can last up to five times longer.  Double-glazes window-/ when it’s cold and cool them down when it’s hot. It is extremely efficient and emits virtually no greenhouse gases.  Solar air conditioning- These work by using the sun’s rays to cool the house down, similar to solar panels when making electricity /


Refrigeration & Air Conditioning (MAB-4533) Chapter- 9 Air cycle refrigeration systems.

only on the refrigeration (T l ) and heat rejection (T h ) temperatures only. Refrigeration & Air Conditioning (MAB-4533) Carnot cycle is an idealization and it suffers from several/Solar radiation Aircraft cooling systems Even though the COP of air cycle refrigeration is very low compared to vapour compression refrigeration systems, it is still found to be most suitable for aircraft refrigeration systems as: a.Air is cheap, safe, non-toxic and non-flammable. Leakage of air is not a problem b.Cold air/


Pollution of Lakes and Rivers Chapter 15: Ozone depletion, acid rain, and climatic warming: the problems of multiple stressors Copyright © 2008 by DBS.

to form O 3 O + O 2 + M → O 3 ΔH = -100 kJ/mol(2) O 3 formed could react with O atoms or absorb solar radiation O 3 + hν → O 2 + O (<320 nm) (3) O + O 3 → 2O 2 ΔH = -390 kJ/mol(4)/ does not penetrate past 20 km) Ozone Depletion Refrigerators, Air Conditioners, Aerosol Cans, and the Ozone Layer Known since 1970’s that human produced chlorine and bromine gases destroy ozone CFC’s inert in troposphere but sink for O 3 in stratosphere Uses: air conditioning, refrigerators, aerosol cans, plastic foams etc. CFCl 3/


Northwest Power and Conservation Council Residential Conservation Resource Assessment Overview of Analytical Process and Major Assumptions April 21, 2009.

Pumps Zonal Heating System Conversions to Ductless Heat Pumps Zonal Heating System Conversions to Ductless Heat Pumps Heat Pump and Central Air Conditioning System Efficiency Upgrades Heat Pump and Central Air Conditioning System Efficiency Upgrades Room Air Conditioner Efficiency Upgrades Room Air Conditioner Efficiency Upgrades Northwest Power and Conservation Council slide 5 Analytical Process – Measure Cost-Effectiveness Baseline Characteristics CRC & ETO Reports Current Codes Market Surveys Federal/


Eco-friendly Refrigerants. History Of Refrigeration Refrigeration relates to the cooling of air or liquids, thus providing lower temperature to preserve.

. Refrigerantion Principle Modern refrigeration and air-conditioning equipment is dominated by vapour compression refrigeration technology built upon the thermodynamic principles of the reverse Carnot cycle. Refrigerant Changes phases during cooling and used again and again. What is a Refrigerant Refrigerants are used as working substances in a Refrigeration systems. Fluids suitable for refrigeration purposes can be classified into primary and secondary refrigerants. Primary refrigerants are those fluids/


Geothermal. Defining “Geothermal” Energy Dictionary definition – Relating to the internal heat of the earth The Earth acts as a giant solar collector,

the earth The Earth acts as a giant solar collector, absorbing approximately 50% of the energy emitted by the Sun. Air temperatures may fluctuate as much as 50  F above and below the annual average. However, only a / the conditioned air or water solution throughout the home or building and returns it to the unit. – Refrigerant circuit A sealed and pressurized circuit of refrigerant including compressor, expansion valve, water-to-refrigerant heat exchanger(s), air coil, reversing valve. The refrigerant is /


REFRIGERATION CYCLES. 2 Carnot Cycle Basic Concepts: Cyclic process: A series of transformations by which the state of a system undergoes changes but.

Non-isentropic compression Superheated vapor at evaporator exit Subcooled liquid at condenser exit Pressure drops in condenser and evaporator 16 SELECTING THE RIGHT REFRIGERANT Several refrigerants may be used in refrigeration systems such as chlorofluorocarbons (CFCs), ammonia, hydrocarbons (propane, ethane, ethylene, etc.), carbon dioxide, air (in the air-conditioning of aircraft), and even water (in applications above the freezing point). R-11, R-12, R-22, R-134a/


Atmosphere and Wind Ch 17: 462-468. The atmosphere Atmosphere = the thin layer of gases around Earth -Provides oxygen -Absorbs radiation and moderates.

from atmosphere by phytoplankton and CFCs acting as greenhouse gases What can be done? Reduce the use of CFCs -They are already banned in aerosols (1987) -BUT they are still used as refrigerants -Recycle fridges and air conditioning units The Montreal Protocol /have been caused by wobbling of Earth on its axis (every 26,000 years) -11-year sunspot cycles and 22-year solar magnetic cycles Ocean circulation influences climate Ocean circulation = ocean water exchanges heat with the atmosphere, -Currents move/


CASE STUDY : Solar Powered air conditioning as a solution to reduce environmental pollution in Tunisia.

but differ in the pressurization stages. In general an absorbent on the low-pressure side absorbs an evaporating refrigerant. An absorption air conditioning system basically consists of an evaporator, a condenser, a generator, an absorber and an economizer. Of the various continuous absorption solar air conditioning systems, LiBr-H2 O and H2O-NH3 are the major working pairs employed in these systems. It is reported that LiBr-H2O/


HVAC control with Synco – simple and energy-efficient © Siemens AG 2008. All rights reserved.

with ACS software Control and switching unit for heating, ventilation, and air conditioning plants Central control unit and room controller for individual room climate Home Automation System Control system BTSynco Standalone controls SupportApplicationsReferencesSummary Control system 21 Synco 700 – versatile HVAC controller range of modular design Synco 700 controls, manages and monitors the primary energy plant:  Heating  Ventilation  Air-conditioningRefrigeration Control system BTSynco Standalone/


Global Warming and Japan’s Energy Conservation Policy SHIGETOMI Norio Project Coordinator Global Environment Technology Development Dept. NEW ENERGY AND.

System loss reduction ○ Heat rate improvement ○ Natural gas ○ Non-conventional energy Wind, Solar, Biomass ○ Energy end-use Industrial sectorEfficient industrial motors ○ Energy efficient industrial boiler ○○ Residential sectorEfficient transportation system ○ Energy efficient appliances and equipment ○ Use of CFL (compact fluorescent lamp) ○ Efficient air conditioning system ○ Efficient refrigerators ○ Technology Needs in Philippines for GHG Emissions Reduction Sources: -Draft Framework for Climate Change/


HVAC: heating, ventilating, and air conditioning this is a thermostat: it sends signals to the heating/cooling system.

wood stove heat pump electric radiator solar panel radiant heating coils in floors, or ceilings (these may be electric, water filled, or air filled) Cooling methods/devices include natural ventilation air movement: fans window air conditioner central air conditioning system massive materials that have a long thermal lag time, (such as brick, concrete, stone) Heat pump Vapor compression refrigeration cycle refrigerators, air conditioners, and heat pumps each provide cooling through/


Joint FP5 ENERGIE Info-day and EnerBuild RTD Project Meeting JAPANESE BUILDING ENERGY RESEACH 7 September 2001, Malmo Ken-ichi Kimura Professor, Advanced.

common in residences. Insulation and air-tightness are prerequisites for passive solar heating Passive Cooling in Residences Natural ventilation and sun shading are pre- requisites. Nocturnal ventilation Cool tube Earth contact floor Roof garden for evaporative cooling Nocturnal radiation Improvement in Efficiency of Household Appliances Refrigerators Lighting bulbs (Compact lamps are not common in Japan.) Room Air- Conditioners Colour TV Air Conditioner Refrigerator Year Energy Conservation in Buildings/


Applied Thermodynamics

Q1. Q2 is known as the refrigeration effect. The performance of a refrigerator/heat pump is measured by means of its coefficient of performance (COP). COP of a refrigeration/heat pump is defined as The working fluid in a refrigeration cycle is called a Refrigerant. Ice plants Important application of Refrigeration Food processing units and transportation, including dairies Industrial airconditioning Comfort airconditioning Chemical and related industries. Hospitals. Laboratories. Domestic applications/


자동차공학 및 실습 자동차 냉난방장치 전남대학교 기계시스템공학부 교수 임 명 택 자동차 냉난방 장치 (Crouse & Anglin 2, 55 장 ) 환기, 난방 및 냉방 (HVAC; Heating, Ventilation, and Air conditioning)

 Heated windshield Fig. 55-6 Fig. 55-5 냉난방 장치 (HVAC) Ventilating and Heating ( 환기와 난방 )  Solar-powered ventilation Photovoltaic (or solar) cells connected in series/parallel  Output drives a small ventilating fan during parking  Or charges vehicle battery on cooler days  Ventilation-air filter Fig. 55-7 냉난방 장치 (HVAC) Refrigeration and Cooling ( 냉동과 냉각 )  Automotive air conditioner ( 자동차 에어컨 ) 기계식 증기압축냉동장치로 승객실의 열을 제거 Fig. 55-8 냉난방 장치 (HVAC) Refrigeration and Cooling ( 냉동과 냉각 )  Change of phase/


Chapter 11 Heat Engines and the Second Law of Thermodynamics Lecture PowerPoint Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction.

form of a heat engine. Gasoline is mixed with air. A spark ignites the mixture, which burns rapidly./ C = 200 J + 300 J = 500 J Refrigerators and Heat Pumps  A refrigerator is also a form of a heat pump.  It/ engine involves some irreversible processes and so must fall short of the ideal conditions of a completely reversible Carnot /Solar power Mirrors focus sunlight to heat a central boiler at a solar- thermal power plant High-Grade and Low-Grade Heat The temperature difference between the hot reservoir and/


California Statewide Utility Codes and Standards Program Energy for Change™ 04/15/2010 1 Refrigerated Warehouses Stakeholder Meeting #1 Portland Energy.

availability ● Market penetration data ● Cost data CALIFORNIA STATEWIDE UTILITIES CODES AND STANDARDS PROGRAM 04/15/20102011 Refrigerated Warehouse Stakeholder Meeting 12 Refrigerated Warehouses Specific Stakeholders Identified ● ASHRAE- American Society of Heating, Refrigerating and Air Conditioning Engineers ● AHRI- American Heating And Refrigeration Institute ● IIAR- International Institute Of Ammonia Refrigeration ● GCCA – Global Cold Chain Alliance (IARW, IACSC) ● Equipment manufacturers ● Consultants/


E8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, 2008 1 2-7. What about battery additives that are supposed to “rejuvenate”

connections though a battery with a shorted cell can create overcharging conditions for the rest of the cells because the lower battery /refrigerators, washers) e8 / PPA Solar PV Design Implementation O&M Marshall Islands March 31-April 11, 2008 10 Appliances not reasonable for SHS use High demand, low value appliances such as electric fry pans, electric tea kettles, coffee makers, toaster ovens High demand major appliances such as electric cooking stoves, electric dryers, electric water heaters and air/


Northwest Power and Conservation Council Draft 6 th Plan’s Assessment of Regional Conservation Potential Conservation Resource Cost and Availability April.

–Clothes Dryers –Dishwashers –Refrigerators –Freezers –Microwaves & Ovens –Solar Photovoltaic Systems (On site use) Consumer Electronics Consumer Electronics –Televisions –Set Top Boxes (Cable, Satellite, DVR) –Desktop Computers –Computer Monitors Northwest Power and Conservation Council slide 9 Residential - What’s Covered (cont) Space Conditioning Space Conditioning –Thermal Shell Improvements (e.g. insulation, high efficiency windows) –Duct Sealing –Heating System Conversions to Air-Source Heat Pumps/


4 Energy Use in Building (建筑能耗) All buildings use energy for lighting, heating or cooling. This chapter explains the use of energy in buildings and includes.

environmental temperature Is a combination of air temperature and radiant temperature. The exact value depends upon convection and radiation effects. For average conditions it can be derived from the following formula Environmental temperature is recommended for the calculation of heat loss and energy requirements 室内综合温度 ( 4 ) Dry resultant temperature t res 室内综合温度 Is a combination of air temperature, radiant temperature and air movement. When the air movement is low it can/


Seite 1 Götz von Stumpfedt 10.03.2013 International Experiences and GIZ’s Contribution to a Shift towards Green Economic Development ProGED Start Up Event.

capacity = 2 nd in terms of installed capacity, after the US Solar Power China is largest Solar PV manufacturer Produced 45% of global solar PV in 2009 With more than 12 GW of large projects in the/and air conditioning Ca. 15% of global energy consumption for cooling (7% growth/year until 2050) [IEA] Approx. 40% of energy consumption in urban areas for refrigeration and air conditioning Up to 40% of goods perish along the (missing) cool chain Refrigerator and air conditioning unit are (next to light and/


MG Rover Group Heating & Climate Control. Heating & Climate Control Day One Introduction And Pre - Course Test. Air Conditioning Definition. Air Conditioning.

And Pre - Course Test. Air Conditioning Definition. Air Conditioning Physics. Air Conditioning System Components. The Differences In Refrigerants. The Flow Of Refrigerant In An Air Conditioning System. Safety Precautions When Handling Air Conditioning Systems. Heating & Climate Control Day Two Reclaiming, Evacuation And Charging Air Conditioning Systems. Air Conditioning System Diagnostics And The Equipment Used. ATC Common Components And/ & Stabilises at 5 Steps Solar Heating Correction Raises Blower Speed /


Climate change and pollution

.  cloud of sulphuric acid droplets scatter and absorb solar radiation  cooling of surface and warming of stratosphere But, aerosols only last /(From Met Office) Potential transmission of malaria a) baseline climate conditions (1961-1990) b) climate change scenario for the 2050s./refrigerants and electronics industry Compared by “emission factor” Classical (or London) “smog” Smoke+fog - heavily polluted air in cities due to SO2 and aerosols from fossil fuel burning Infamous London smog of 1952: 4 days and/


Energy $avings Opportunities For North Carolina Businesses and Institutions.

and awareness) low cost (operations & maintenance)low cost (operations & maintenance) capital projectscapital projects Measurement & Verification Measurement & Verification Building Schedules Affect all categories of energy use Create longer periods of unoccupied time Create longer periods of unoccupied time Optimize the use of facilities Optimize the use of facilities You may be keeping an entire building conditioned/ refrigerator gasket can save $50 per year. Equipment (cont.) No Cost Opportunities Air /


Second Law of Thermodynamics

QC = 200 J + 300 J = 500 J Refrigerators and Heat Pumps A refrigerator is also a form of a heat pump. It also/ a heat pump, as most air conditioners do. Instead, it simply moves air around. The waste heat from / engine involves some irreversible processes and so must fall short of the ideal conditions of a completely reversible Carnot /Solar power Mirrors focus sunlight to heat a central boiler at a solar-thermal power plant High-Grade and Low-Grade Heat The temperature difference between the hot reservoir and/


WHICH OF THE FOLLOWING STATEMENTS ABOUT AIR COOLED CONDENSERS IS CORRECT? A.MORE EXPENSIVE THAN WATER COOLED CONDENSERS. B.HIGH MAINTENANCE. C.LIMITED.

. THEY REQUIRE ABOUT ONE SQUARE FOOT OF PLAN AREA PER TON OF REFRIGERATION C. THEY ARE ABOUT 4 TO 5 FEET IN HEIGHT. D. /AIR TEMPERATURE AND THE SOLAR RADIATION? A. EFFECTIVE TEMPERATURE. B. OPERATIVE TEMPERATURE. C. RESULTANT TEMPERATURE. D. SOL-AIR TEMPERATURE. WHICH OF THE FOLLOWING IS THE EQUIVALENT OUTSIDE TEMPERATURE THAT WOULD, IN THE ABSENCE OF SOLAR/ AIR VOLUME SYSTEM TO CONDITION CORE SPACES? A. UNIT HEATER. B. INFRARED HEATERS. C. ALL-WATER SYSTEM WITH FANCOIL UNITS. D. WINDOW AIR-CONDITIONERS/


TOURISM AND ENVIRONMENT (THM 317)

ODSs in refrigeration and air-conditioning; • Seal gaps in windows and door frames; • Monitor water, fuel, power use and indoor air quality; • Use environment-preferable building materials during refurbishment and renovation; • Co-operate with other departments in EMS management and monitoring. THM/ fields. Residue sediment is dried and used as fertilizer for forestry. THM 317 CASE STUDIES ON EMS IN HOSPITALITY BUSINESSES 3 ENERGY • Hot water is generated through solar hot water panels, situated on /


Nanotechnology for Energy and Environment BIOE298 DP.

elimination of glare - Improved acoustic performance - Reduced solar heat gain/loss - Decreased energy consumption – heat, air conditioning, lighting, ventilation, carbon emissions - Unmatched moisture resistance – 100% hydrophobic - Exceptional color stability and insulation performance Nanogel Performance 100 µm10 µm1 /(MNT) the impact of ozone-depleting substances (ODS) on stratospheric ozone will continue. ODS refrigerants can be replaced with MNT → The growth-rate of ODP in the ODS reservoir will become/


POLLUTION TAX Using the paper market as an example: Paper mills generate chemical wastes as part of their production process and dump some of these wastes.

the earth’s temperature is increasing. Solar energy comes through the atmosphere and heats the air near the earth’s surface.Solar energy comes through the atmosphere and heats the air near the earth’s surface. Certain / –eye disease, –death of marine organisms; Chlorofluorocarbons (CFCs), used in refrigeration, air conditioning, spray products, etc..., were the culprit;Chlorofluorocarbons (CFCs), used in refrigeration, air conditioning, spray products, etc..., were the culprit; The nations of the world have/


Emergency Response and Business Continuity Plan

air conditioning (HVAC) systems or control modifications, efficient building design, advanced electric motor drives, and heat recovery systems. ? Eskom Internal Efficiency Policy / Regulatory / Stakeholder Considerations Parameters Definition Generation input Energy Efficiency Internal awareness campaign Supply Side Management Wedges Definition Emergency Response Relevance RE harnesses naturally occurring non-depletable sources of energy, such as solar, wind, biomass, hydro, tidal, wave, ocean current and/


Solar thermal energy ( STE )is a technology for harnessing solar energy for thermal energy (heat). Solar thermal collectors are defined by the USA Energy.

and air conditioning (HVAC) systems account for over 25 percent (4.75 EJ) of the energy used in commercial buildings and nearly half (10.1 EJ) of the energy used in residential buildings. Solar heating, cooling, and/and cooling.  Active solar cooling can be achieved via absorption refrigeration cycles, desiccant cycles, and solar mechanical processes. In 1878, Auguste Mouchout pioneered solar cooling by making ice using a solar steam engine attached to a refrigeration device. Thermal mass, smart windows and/


© 2009 Autodesk Autodesk Sustainable Design Curriculum Lesson Six: Modeling the Design of Mechanical, Electrical, and Plumbing Systems for Sustainability.

Society of North America (IESNA) recommendations:  Classroom: 30 FC  Retail: 50 FC  American Society of Heating, Refrigerating and Air Conditioning (ASHRAE) and CA code requirements, maximum lighting power density (LPD) for whole building:  School: 1.2 watts per square foot / values of outside dry-bulb temperature, wet-bulb temperature, atmospheric pressure, wind speed and direction, cloud cover, and, in some cases, solar radiation) was originally based on data from only 60 U.S. weather stations. /


Energy Efficiency: The first and most profitable way to delay Climate Change UCLA Institute of the Environment Environmental Science Colloquium February.

Refrigerator and AC Efficiency Improvements Savings calculated 10 years after standard takes effect. Calculations provided by David Fridley, LBNL Value of TWh 3 Gorges 三峡 Refrigerators 冰箱 Air Conditioners/solar reflectance by up to 0.5 Gain greatest for dark colors cool standard ∆R=0.37∆R=0.29∆R=0.15∆R=0.23∆R=0.26∆R=0.29 Courtesy American Rooftile Coatings 27 Cool Roofs Standards Building standards for reflective roofs - American Society of Heating and Air-conditioning Engineers (ASHRAE): New commercial and/


Ads by Google