We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byJabari Garraway
Modified over 2 years ago
© American Standard Inc. CAUSES AND EFFECTS OF DEFERRED MAINTENCE s Texas Association of Community Schools s Houston, Texas s October 20, 2014 Greg Spencer
© American Standard Inc. Statistics today: s USGAO estimates 1 in 5 children attend schools with poor IAQ s Old infrastructure – 73% of public schools built prior to 1970 s GAO report indicates 15,000 schools circulating unfit air s Nationally, deferred maintenance costs risen to $127B
© American Standard Inc. Contributors to the problem: s Inadequate school funding s Increased enrollments s Lack of manpower and capabilities s Competing interests – curricular & facility
© American Standard Inc. Some impacts: s Inefficient equipment operation s Reduced equipment effectiveness s Increased utility costs s Poor IAQ s Reduced equipment life expectancy
© American Standard Inc. Tough Life for a RTU-Typical in TX s Regarded as semi-disposal pieces of equipment. s Live in a harsh environment. s Receive little to no maintenance.
© American Standard Inc. Air-Side Vs. Refrigerant-Side s Two fluid loops to deal with. s Air Side s Refrigerant Side s Always do air-side maintenance and repairs first.
© American Standard Inc. Air-Side Focus s Filters s Cooling Coil s Fan s Motor s Casing Integrity
© American Standard Inc. Filters – what are they for? s Maintain air cleanliness in classrooms s Keeps the unit clean s Best investment in the system
© American Standard Inc. How often to change? s Quarterly or sooner s Tie to Energy Management System s Install pressure differential switch
© American Standard Inc. Cooling Coil s Dirt on cooling coil costs both temperature and utility costs s Texas Field Test u 87% of units need coil cleaning s Clean evaporator coil yearly
© American Standard Inc. RTU Blower s Bearing lubrication s Clean fan blades s Measure air flow
© American Standard Inc. Motors s Sealed bearings s Specify energy efficient motors u When buying new equipment u When buying replacement parts
© American Standard Inc. Casing Integrity s Many access panels can leak s Too many screws s Old gaskets and seals s Leaks in cabinet costs more than $ 100/year
© American Standard Inc. Condenser Coil s Exposed to the outdoor elements s A dirty coil raising the condenser temperature by 10 degrees can cost over $250 / year in energy. s Best money you can spend on maintenance s Clean coils yearly.
© American Standard Inc. CHW systems similar s Poor pumping losses can exceed 10% s Cooling tower- 1 degree rise = 1.5% higher costs s Tube fouling-can equate to 10% loss in efficiency s Refrigerant charge-17% loss in efficiency s Boilers-buildup can create 10% loss in efficiency
© American Standard Inc. Thank You
Get To Know Your Air Conditioner by James Popplewell.
1-1-Why Maintenance HVAC ? Increases equipment life & reliability Reduces size & scale & number of repairs Lowers maintenance costs through better.
Why Maintenance Tasks are Important Produced by Joe Marchese.
INTRODUCTION. Function of Chillers Remove Cool Control Support.
ACTIVE LEARNING PROCESS
1 Air Conditioning Pressure Switches. 2 High Pressure switch Used to protect the compressor When condensing temp gets too high Reads High Side Pressure.
Basics Air Flow Basics -Air is invisible -Everyone assumes adequate airflow -Frequently airflow is 30%-50% low -Cooling – 400 CFM per ton -Heating.
The Airtex Educational Partnership (AEP) was started several years ago by Airtex Automotive Division as a way to merge corporate automotive expertise with.
Air Handler Terminology
The High Cost of CONTAMINATION Oil Contaminated Refrigerant costs you MONEY in more ways one! in more ways than one!
Install new air cooled high efficiency screw chiller (variable speed) Install new fan coils with ECM motors and low temperature heating coils and proper.
A Trane Air Conditioning Clinic Centrifugal Water Chillers Air Conditioning Clinic TRG-TRC010-EN © American Standard Inc
1 Air Conditioning Air System problems. 2 The primary problem that can occur in an air system is the reduction in airflow. Air handling systems do not.
Hawke’s Bay Refrigeration
Geothermal Heat Pumps. How It Works Different from Geothermal Energy Uses the earth surface not center Finds an area at the earth’s surface that has a.
Air Conditioning and Refrigeration Basics Don Gulliver February 9, 2013.
Chapter 4 Air-Conditioning Components
1 Optimizing the Efficiency of the NCAR-Wyoming Supercomputing Center Ademola Olarinde Team Member: Theophile Nsengimana Mentor: Aaron Andersen August.
Using Heat Part 2. Science Journal Entry 32 Explain the advantages and disadvantages of thermal expansion.
Thermostats, Pressure Switches, and Other Electric Control Devices
ARÇELİK TİCARİ KLİMA EĞİTİM DÖKÜMANI APPENDIX.
IMPROVING THE EFFICIENCY GEOTHERMAL or GROUND SOURCE HEAT PUMPS.
GPAEE New Technologies Blitz 960 Brook Road, Unit 3, Conshohocken, PA * Phone: (610) * Fax: (610) * Feb 18, 2016.
Call Piedmont Metro today and tell us you found us on the Internet. Save a tree – just mention our online special when you.
ELECTRIC HYBRID HEAT PUMP WATER HEATERS
Air Conditioning Circuit
1 BREC Air-cooled water chillers BREF Air-cooled water chillers with free-cooling system 1602A A A A A 3202A A A -
Setup/Installation/Operation of an Environmental Control Unit (ECU)
Geothermal Heat Pumps Connecticut Geothermal Association John Sima, PE.
Utility Savings & Management “Back-to-Basics” Presented by: Clean ‘07 Las Vegas, NV / June 13, 2007.
PRESSURE MEASUREMENT INSTRUMENTS © Commonwealth of Australia 2010 | Licensed under AEShareNet Share and Return licence.
David Garvin Product Manager EarthDirEX Geothermal Copyright © 2015 Nortek Inc. All rights reserved.
Best practice small scale commercial refrigeration, optimisation strategies and simple maintenance Michael Bellstedt, Minus40 Pty Ltd.
Tennessee Technology Center Center at Pulaski. Superheat & Sub-cooling A Technician’s Guide to HVACR Diagnostics.
IMPROVING COOLING SYSTEM EFFICIENCY WITH PRE-COOLING AJ Schutte 15 August 2012.
CCNA1 v3 Module 9 v3 A+ Type 2 JEOPARDY K. Martin.
HVAC: heating, ventilating, and air conditioning this is a thermostat: it sends signals to the heating/cooling system.
OVER 20 YEARS OF ENERGY SAVINGS FRIGI-TECH REFRIGERANT OIL ADDITIVE Frigi-Tech International, Inc Prairie Wind Lane,. Houston, Texas T:
Components of HVAC System
CHAPTER 4 CPB 20004: Plant Utility n Maintenance
NOVO ETS IMPROVING YOUR ORGANIZATIONS’ ENVIRONMENTAL, HEALTH AND SAFETY PERFORMANCE ENERGY MANAGEMENT IN THE CONTEXT OF GREEN PRODUCTIVITY.
Facilities Management and Design Chapter 7 HVAC Systems.
Air Conditioning Planned Maintenance Produced by Joe Marchese.
C oncerns Ltd ool Energy Efficient Refrigeration Jane Gartshore, Cool Concerns Ltd.
Lesson 18 - Decay Heat DEFINE the term decay heat. Given the operating conditions of a reactor core and the necessary formulas, CALCULATE the core decay.
Become an Energy Super Hero!
© 2017 SlidePlayer.com Inc. All rights reserved.